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Determination of pesticide residue in soil samples by molecularly imprinted solid-phase extraction method e-Polymers (IF 3.7) Pub Date : 2024-03-16 Xiaofeng Yu, Jiawei Xie, Bixing Yan, Renyuan Song, Kun Chen, Hegang Yan
Porous molecularly imprinted polymer (MIP) microspheres were synthesized via iniferter-suspension polymerization method, employing lenacil (LA) as the template molecule and methacrylic acid (MAA) as the functional monomer. The host–guest complexes formed using LA and MAA were characterized by hydrogen nuclear magnetic resonance and ultraviolet–visible absorption spectroscopy. The obtained results showed
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The die swell eliminating mechanism of hot air assisted 3D printing of GF/PP and its influence on the product performance e-Polymers (IF 3.7) Pub Date : 2024-03-16 Ru Yang, Jianhua Xiao, YingLan Liu, ShiKang Xu
For eliminating the die swell phenomenon in 3D printing of GF/PP, a hot air assisted 3D printing method is proposed and its mechanism is studied. A two-phase flow model consisting of compressible gas and in-compressible melt is established, and the process of polymer filament extrusion is simulated. A series of experiments are conducted to compare the differences between traditional printing and gas-assisted
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Preparation and application of profiled luminescent polyester fiber with reversible photochromism materials e-Polymers (IF 3.7) Pub Date : 2024-03-15 Yaoding Tao, Shouyun Zhang, Mei Xu, Qiang Shu, Shang Gao, Yanan Liu, Peisong Wang, Ruijia Cheng
In this study, we realized a highly luminescent polyester fiber using a special spinneret orifice comprised of eight C-shaped pores and specific process parameters. A moderate amount of reversible photochromism materials was added along with the specific color masterbatch of suitable materials. With its high light transmittance and reflectance, the fabric has high glossiness and excellent transparency
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Multifunctional hydrogel based on silk fibroin/thermosensitive polymers supporting implant biomaterials in osteomyelitis e-Polymers (IF 3.7) Pub Date : 2024-03-13 Chayanee Noosak, Pavarish Jantorn, Jutakan Thonglam, Chaiwat Chuaychoosakoon, Jirut Meesane, Dennapa Saeloh Sotthibandhu
The search for novel antibiotic-loaded biomaterials that support the management of osteomyelitis has been extensive in current years. This study developed multifunctional hydrogel to enhance the performance of osteo-conduction and antimicrobial as supporting implant materials for osteomyelitis treatment and prevention. Ciprofloxacin-loaded thermosensitive hydrogels composed of silk fibroin and poloxamers
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Molecular dynamics simulation and experimental study on the mechanical properties of PET nanocomposites filled with CaCO3, SiO2, and POE-g-GMA e-Polymers (IF 3.7) Pub Date : 2024-03-13 Xiaoying Cheng, Qiuhui Liao, Jiani Xu, Zeen Gu, Yibo He
This work investigated the mechanical properties of polyethylene terephthalate (PET) reinforced with calcium carbonate (CaCO3) and silica (SiO2) nanoparticles, respectively, and the improvement in toughness of the ternary system with the incorporation of graft-modified ethylene-1-octene copolymer (POE-g-GMA). PET nanocomposites were prepared by melt blending extrusion and injection molding. Molecular
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Marine antifouling coating based on fluorescent-modified poly(ethylene-co-tetrafluoroethylene) resin e-Polymers (IF 3.7) Pub Date : 2024-03-13 Ze Wang, Yu Li, Jiahao Ren, Yangkai Xiong, Zheng Li, Guoqing Wang
The growth of marine economy urgently needs non-toxic coatings. This study provides a novel and green coating that obtains outstanding antifouling performance by combining the low surface energy effect and the fluorescent effect. The coating was synthesized by reacting tetraphenylethylene (TPE) as the fluorescent component with poly(ethylene-co-tetrafluoroethylene) resin. The introduction of TPE provided
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Highly stretchable, durable, and reversibly thermochromic wrapped yarns induced by Joule heating: With an emphasis on parametric study of elastane drafts e-Polymers (IF 3.7) Pub Date : 2024-03-02 Yong Wang, Lizheng Zhang, Mingkun Qi, Zihan Yuan, Mingwei Li, Wei Wang, Changlong Li, Malik Yonis Hassan Saty
Highly stretchable thermochromic wrapped yarns, which employ elastane filament (EF) as core, stainless steel wire, and thermochromic polyester filament as the first and second winding, was prepared, and the effect of elastane draft upon yarn properties was investigated. It was found that the elastane draft played an essential role in determining the final yarn behavior, and the optimized elastane draft
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Flame-retardant thermoelectric responsive coating based on poly(3,4-ethylenedioxythiphene) modified metal–organic frameworks e-Polymers (IF 3.7) Pub Date : 2024-03-02 Guorong Wang, Zhiyuan Mei, Yu Li, Zhaoyi Sun, Guotao Chen
Poly(3,4-ethylenedioxythiophene) (PEDOT) is introduced on the surface of a metal–organic framework material by solvothermal method to prepare nanorods (TE@Zn-MOFs) with both flame retardant and thermoelectric properties. Data from cone calorimeter and TG-IR show that TE@Zn-MOFs effectively improves the flame retardant and smoke suppression properties of epoxy-based coatings. At a high TE@Zn-MOFs content
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Comprehensive performance evaluation based on electromagnetic shielding properties of the weft-knitted fabrics made by stainless steel/cotton blended yarn e-Polymers (IF 3.7) Pub Date : 2024-03-01 Ning Li, Tianjiao Liu, Mengqi Tian, Junrui Duan, Mu Yao, Runjun Sun
Electromagnetic shielding (EMS) fabric is an effective way to prevent electromagnetic (EM) radiation. However, the research about mechanism analysis of the fabrics’ structure, EM wave (EMW) incident direction, and EMW frequency on the EMS properties of knitted fabrics is discordant at present. Meanwhile, researchers are focused on improving the EMS efficiency of the fabric but rarely discussed the
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Development of smart core–shell nanoparticles-based sensors for diagnostics of salivary alpha-amylase in biomedical and forensics e-Polymers (IF 3.7) Pub Date : 2024-01-23 Kumaravel Kaliaperumal, Kumaran Subramanian, Akshara Seenivasan, Renitta David, Indumathi Mahadevan, Nahaa Miqad Alotaibi, Modhi Obaidan Alotaibi, Nawaf Alshammari, Mohd Saeed
Smart biocompatible materials that respond to a variety of external stimuli have a lot of potential in the creation of low-cost diagnostic biosensors. The present work describes the creation of core–shell nanoparticles as a biosensor for smart enzyme detection of salivary alpha-amylase (sAA). A chitosan-tripolyphosphate core was generated via ionic gelation and was coated with a starch–iodine shell
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Adsorption and recovery of Cr(vi) from wastewater by Chitosan–Urushiol composite nanofiber membrane e-Polymers (IF 3.7) Pub Date : 2024-01-06 Xiaoyu Jie, Bing-Chiuan Shiu, Huazhong Wu, Yuchi Zhang, Yuansong Ye, Chunxiang Lin, Run Fang
Chitosan (CS) is widely used in the treatment of wastewater containing metal ions. However, the poor stability in acidic aqueous solutions severely limits its application in many practical scenarios. In this work, a CS-based composite nanofiber membrane was prepared by electrospinning using urushiol, a natural biomaterial, as the cross-linking agent. The application of the CS-urushiol (CS-U) membrane
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Recyclable polytriazole resins with high performance based on Diels-Alder dynamic covalent crosslinking e-Polymers (IF 3.7) Pub Date : 2024-01-03 Kejie Heng, Jun Zhang, Caiyun Wang, Keying Wang, Liqiang Wan, Farong Huang
N,N-Di-2-propyn-1-yl-2-furanmethanamine (DPFA) was synthesized from 2-furanemethylamine and 3-chloropropyne. Then, furan-containing polytriazoles were made from DPFA and diazide compounds. The Diels-Alder (DA) reaction between 4,4′-bismaleimidodiphenylmethane and furan-containing polytriazoles was used to prepare recyclable polytriazole resins. The effects of the main chain structures on the reversible
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Radiation shielding capability and exposure buildup factor of cerium(iv) oxide-reinforced polyester resins e-Polymers (IF 3.7) Pub Date : 2023-12-29 Dalal A. Aloraini, Aljawhara H. Almuqrin, Kawa M. Kaky, M. I. Sayyed, Mohamed Elsafi
The radiation shielding characteristics of the polyester resin composites reinforced with cerium(iv) oxide (CeO2) have been studied. The prepared composites were pure polyester–resin (Poly/CeO2-0), 90% per weight polyester resin and 10% CeO2 (Poly/CeO2-10), (Poly/CeO2-30), (Poly/CeO2-50), and (Poly/CeO2-60). The linear attenuation coefficient (LAC) values for the free polyester and polyester samples
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Numerical simulation into influence of airflow channel quantities on melt-blowing airflow field in processing of polymer fiber e-Polymers (IF 3.7) Pub Date : 2023-12-26 Dongjun Guo, Zhisong Zhu, Jie Yuan
To obtain better airflow field characteristics of melt-blowing and acquire slender melt-blowing fiber, a new die with multi-channel of melt-blowing airflow was designed. The airflow field under the spinneret hole of the melt-blowing die was simulated and analyzed using computational fluid dynamics method, and distribution rules of the ordinary die and the new die on the airflow field along the spinning
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Cellulose acetate oleate-reinforced poly(butylene adipate-co-terephthalate) composite materials e-Polymers (IF 3.7) Pub Date : 2023-12-26 Yi Chen, Ting Feng, Yifei Long, Cheng Pan, Guozhi Fan, Bai Juan, Guangsen Song
Cellulose acetate oleate (CAO)-reinforced poly(butylene adipate-co-terephthalate) (PBAT) composites were prepared by the solvent casting method. The influence of the addition of CAO on the mechanical property, thermal property, disintegration property, compatibility, and hydrophobicity of PBAT/CAO composites was investigated. Compared with PBAT, the tensile strength and Young’s modulus of PBAT/CAO
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Preparation and characterization of magnetic microgels with linear thermosensitivity over a wide temperature range e-Polymers (IF 3.7) Pub Date : 2023-12-22 Yongqi Yang, Zekai Ren, Xiawei Li, Youjun Yan, Jun Liu, Meng Lian, Guangyao Liu, Xin Luo
Hybrid nanogels that are both thermosensitive and superparamagnetic, and have good biocompatibility are expected to have applications in the biomedical field. In this article, a linearly thermosensitive magnetic microgel was prepared by a radical copolymerization reaction in aqueous dispersion. In this reaction, poly(ethylene glycol) diacrylate was used as a crosslinker, polyvinylpyrrolidone was used
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Gamma-ray shielding analysis using the experimental measurements for copper(ii) sulfate-doped polyepoxide resins e-Polymers (IF 3.7) Pub Date : 2023-12-21 K. A. Mahmoud, Mazen M. Binmujlli, M. W. Marashdeh, Mamduh J. Aljaafreh, Ahmad Saleh, M. Y. Hanfi
The present work aims to study the effect of the CuSO4 additive on the physical and radiation-shielding properties of polyepoxide resins. As a result, a series of four samples with the chemical composition xCuSO4 + (100 − x) (epoxy resin and hardener) was synthesized. The fabrication of samples was performed under atmospheric pressure and at room temperature. The density of the fabricated CuSO4-doped
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Damage accumulation and failure mechanism of glass/epoxy composite laminates subjected to repeated low velocity impacts e-Polymers (IF 3.7) Pub Date : 2023-12-20 Hao Li, Zhaogang Yu, Kun Liu, Zhen Tao, Jiangtao Zhang
In this work, the damage accumulation and failure mechanism of glass fiber-reinforced epoxy composite laminates under repeated low velocity impacts were studied considering the influence of stacking sequence. The typical sandwich-like [0°2/90°2]s, angle-ply [±45°]2s and quasi-isotropic [0°/−45°/45°/90°]s laminates were tested at 20 J impact energy. The impact responses including contact force–time/central
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Variation in tungsten(vi) oxide particle size for enhancing the radiation shielding ability of silicone rubber composites e-Polymers (IF 3.7) Pub Date : 2023-12-20 Dalal A. Aloraini, Aljawhara H. Almuqrin, M. I. Sayyed, Mohamed Elsafi
In this work, the attenuation properties of silicon rubber (SR) composites reinforced by both micro- and nano-sized Tungsten trioxide (WO3) particles are studied. Different SR composites with different combinations of micro-WO3 and nano-WO3 have been prepared. The main composite, SR-(WO3)60m (40% SR containing 60% micro-WO3), and other compositions were prepared by replacing percentages of microparticles
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Enhancing the therapeutic efficacy of Krestin–chitosan nanocomplex for cancer medication via activation of the mitochondrial intrinsic pathway e-Polymers (IF 3.7) Pub Date : 2023-12-09 Karma Albalawi, Chellasamy Panneerselvam, Mamdoh S. Moawadh, Adel I. Alalawy, Awatif M. E. Omran, Mahmoud A. Abdelaziz, Zuhair M. Mohammedsaleh, Hatem A. Al-Aoh, Syed Khalid Mustafa, Ali A. Keshk, Majed M. Al-Morwani, Ali Hamzah Alessa, Menier Al-Anazi, Sahar Khateeb
Surgery, chemotherapy, and radiation therapy are all forms of cancer treatment, as well as more recent methods including interventional radiology and immunotherapy. In this study, we synthesize a novel chitosan (CH) nanocomplex (NC)-based polysaccharide Krestin (PSK) for drug delivery. This technique was used to develop PSK@CH@NC. According to the study, PSK@CH@NC had a particle size of around 500
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Stereocomplex PLLA–PBAT copolymer and its composites with multi-walled carbon nanotubes for electrostatic dissipative application e-Polymers (IF 3.7) Pub Date : 2023-12-08 Onpreeya Veang-in, Yottha Srithep, John Morris, Darunee Aussawasathien, Patnarin Worajittiphon
Because of its low thermal stability and brittleness, both the drawbacks of poly(l-lactide) (PLLA) were solved by forming stereocomplex (ST) and its copolymer with poly(butylene adipate-co-terephthalate) (PLLA–PBAT). In this study, we synthesized PLLA and PLLA–PBAT copolymer by ring-opening polymerization. Both polymers were blended with poly(d-lactide) to form ST crystals. Multi-walled carbon nanotubes
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Development of polymeric IPN hydrogels by free radical polymerization technique for extended release of letrozole: Characterization and toxicity evaluation e-Polymers (IF 3.7) Pub Date : 2023-11-14 Hammad Yousaf, Ikrima Khalid, Kashif Barkat, Yasir Mehmood, Syed Faisal Badshah, Irfan Anjum, Hiba-Allah Nafidi, Yousef A. Bin Jardan, Mohammed Bourhia
This research study’s objective was to formulate interpenetrating pH-sensitive polymeric networks interpenetrating networks (IPNs) based on hydroxypropylmethylcellulose (HPMC)/Primojel for use in the treatment of various malignant conditions. For controlled release, letrozole (LTZ) was selected as a model drug in HPMC and Primojel-based IPN hydrogels. HPMC and Primojel based IPN hydrogels were fabricated
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Tribological characterization of sponge gourd outer skin fiber-reinforced epoxy composite with Tamarindus indica seed filler addition using the Box–Behnken method e-Polymers (IF 3.7) Pub Date : 2023-11-14 Felix Sahayaraj Arockiasamy, Mayakrishnan Muthukrishnan, Jenish Iyyadurai, Seeniappan Kaliappan, Natrayan Lakshmaiya, Sinouvassane Djearamane, Lai-Hock Tey, Ling Shing Wong, Saminathan Kayarohanam, Sami Al Obaid, Saleh Alfarraj, Subpiramaniyam Sivakumar
The tribological properties of the sponge gourd outer skin fiber (SGOSF)-reinforced epoxy composites filled with tamarind seed powder were investigated using a pin-on-disc dry sliding wear testing machine. The fiber and filler contents were kept constant (30 and 7.5 wt%). The fibers were treated with sodium hydroxide (NaOH), which increases the bonding strength that has been identified by scanning
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Dose-dependent cytotoxicity against lung cancer cells via green synthesized ZnFe2O4/cellulose nanocomposites e-Polymers (IF 3.7) Pub Date : 2023-11-08 Alka Singh, Nakshatra Bahadur Singh, Kanu Priya, Richa Tomar, Mohammed Saeed Al-Qahtani, Mohammad Tarique Imam, Ziyad Saeed Almalki, Waleed Al Abdulmonem, Krishna Kumar Yadav, Hyun-Kyung Park
Cancers are complicated sicknesses that happen because of many different things going wrong in cells, and as they get worse, the cells undergo many changes one after another. Nanomedicine is a new way to treat diseases like cancer. Tiny particles called nanoparticles have special properties that can help to treat diseases better than regular treatments. These particles are very small but have a lot
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A novel fabrication method of slippery lubricant-infused porous surface by thiol-ene click chemistry reaction for anti-fouling and anti-corrosion applications e-Polymers (IF 3.7) Pub Date : 2023-11-06 Xuezhun Gu, Hao Jiang, Xiaotong Chen, Yu Li, Guoqing Wang
A novel and simple way for efficiently preparing stable and non-toxic slippery lubricant-infused porous surface (SLIPS) will expand its anti-fouling and anti-corrosion applications in marine environments. Herein, vinyl-terminated polydimethylsiloxane was covalently grafted on the surface of nano-SiO2 by a thiol-ene click chemistry reaction. After that, SLIPS was efficiently prepared at room temperature
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Preparation and performance of silicone-modified 3D printing photosensitive materials e-Polymers (IF 3.7) Pub Date : 2023-11-06 Jin Chen, Lu Zheng, Wenwen Zhou, Min Liu, Yuyu Gao, Jiaqiang Xie
Herein, the performance of silicone-modified 3D printing photosensitive resin was examined. Bisphenol-A epoxy acrylate (EA) was used as the substrate and isophorone diisocyanate, hydroxy-silicone oil, and hydroxyethyl acrylate were used as the raw materials. A silicone intermediate was synthesized to modify the substrate to prepare the 3D printing photosensitive material. The as-synthesized materials
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Enhanced apoptotic activity of Pluronic F127 polymer-encapsulated chlorogenic acid nanoparticles through the PI3K/Akt/mTOR signaling pathway in liver cancer cells and in vivo toxicity studies in zebrafish e-Polymers (IF 3.7) Pub Date : 2023-11-03 Fehaid Alanazi, Abozer Y. Elderdery, Badr Alzahrani, Nasser A. N. Alzerwi, Maryam Musleh Althobiti, Musaed Rayzah, Abdulaziz Suailem Alanazi, Fahd A. Kuriri, Bandar Idrees, Fawaz O. Alenazy, Afnan Alsultan, Fares Rayzah, Yaser Baksh, Suresh Kumar Subbiah, Pooi Ling Mok
In this study, chlorogenic acid nanoparticles encapsulated in Pluronic F127 polymer were synthesized and characterized to determine if they could treat human liver cancer. The nanoparticles were synthesized using standard procedures and characterized using physical and biological techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, UV-Vis, dynamic light scattering, Photoluminescence
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A review on semi-crystalline polymer bead foams from stirring autoclave: Processing and properties e-Polymers (IF 3.7) Pub Date : 2023-11-01 Christian Brütting, Tobias Standau, Johannes Meuchelböck, Peter Schreier, Holger Ruckdäschel
Bead foams have been widely used for more than 70 years, with expandable polystyrene and expanded polypropylene (EPP) being the main materials. There are different processes for producing bead foams, depending heavily on the material used (e.g., their thermal behavior). EPP is usually produced by a discontinuous stirring autoclave process, which is the main subject of this study. In this process, thermal
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Synthesis of low-VOC unsaturated polyester coatings for electrical insulation e-Polymers (IF 3.7) Pub Date : 2023-10-28 Selinay Gümüş, Kaan Aksoy, Ayşe Aytaç
The objective of this research is to develop an unsaturated polyester (UPE) varnish with low-volatile organic compounds (VOCs). Instead of using a solvent, the solvent-free varnish incorporates a reactive diluent to reduce viscosity and a catalyst to accelerate curing. To achieve this, vinyl toluene and 1,4-butanediol dimethacrylate were employed as curing agents. Sebacic acid (SA) and fumaric acid
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Fatigue behaviour of Kevlar/carbon/basalt fibre-reinforced SiC nanofiller particulate hybrid epoxy composite e-Polymers (IF 3.7) Pub Date : 2023-10-24 Thandavamoorthy Raja, Vinayagam Mohanavel, Palanivel Velmurugan, Kaliappan Seeniappan, Durgesh Pratap Singh, Sinouvassane Djearamane, Lai-Hock Tey, Ling Shing Wong, Saminathan Kayarohanam, Sami Al Obaid, Saleh Alfarraj, Subpiramaniyam Sivakumar
It is vital to conduct research on the behaviour of natural fibre composites under cyclic loading in order to have confidence in the mechanical durability. During this study, the fabrication of composite laminates will be carried out by the hybridization effect of natural and synthetic fibres. Quantifying the impact that the SiC filler (10, 20, and 30 g) has when combined with the fibre reinforcement
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Effect of citric acid on thermal, phase morphological, and mechanical properties of poly(l-lactide)-b-poly(ethylene glycol)-b-poly(l-lactide)/thermoplastic starch blends e-Polymers (IF 3.7) Pub Date : 2023-10-24 Yaowalak Srisuwan, Prasong Srihanam, Theeraphol Phromsopha, Yodthong Baimark
This work investigated the thermal, morphological, and tensile properties of poly(l-lactide)-b-poly(ethylene glycol)-b-poly(l-lactide) (PLLA-PEG-PLLA)/thermoplastic starch (TPS) blends with 3 wt% citric acid (CA) treatment of TPS. The blends with PLLA-PEG-PLLA/CA-TPS ratios of 100/0, 90/10, 80/20, and 60/40 (w/w) were investigated and compared with PLLA-PEG-PLLA/CA-free TPS blends. Crystallizability
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Study on wall-slipping mechanism of nano-injection polymer under the constant temperature fields e-Polymers (IF 3.7) Pub Date : 2023-10-20 Donglei Liu, Riqing Chen, Kai Zhan, Zizhi Chen, Xin Luo
Polyphenylene sulfide (PPS) and copper (Cu) were used as the polymer and substrate material to simulate the nano-injection molding process by molecular dynamics method. The results show that the PPS chain obeys Einstein’s diffusion law in the early stage of injection molding then deviates from it in the late stage due to the entanglement and limitation of surrounding nanoparticles. In addition, the
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High strength, anti-static, thermal conductive glass fiber/epoxy composites for medical devices: A strategy of modifying fibers with functionalized carbon nanotubes e-Polymers (IF 3.7) Pub Date : 2023-10-20 Yue Li, Shaohua Zeng
A series of aliphatic amine-functionalized multiwalled carbon nanotubes (MWCNTs) wherein varied secondary amine numbers were grafted on the MWCNTs’ surface were synthesized and further dispersed onto the glass fibers for reinforcing epoxy-based composites. By tuning secondary amine numbers of aliphatic amines, the dispersion of MWCNTs and ultimately mechanical, thermal, and conductive properties of
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Bentonite/hydroxyethylcellulose as eco-dielectrics with potential utilization in energy storage e-Polymers (IF 3.7) Pub Date : 2023-10-20 Andreea Irina Barzic, Iuliana Stoica, Mihai Asandulesa, Raluca Marinica Albu, Bogdan Oprisan
This study deals with the preparation and characterization of novel composites accomplished by filling hydroxyethylcellulose with several amounts of bentonite. Molecular modeling enabled understanding the conformational and physicochemical features, which are responsible for the chemical reactivity parameters. Rheological analyses are made to investigate the effect of the polymer loading on the shear
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Effects of mechanical recycling on the properties of glass fiber–reinforced polyamide 66 composites in automotive components e-Polymers (IF 3.7) Pub Date : 2023-10-20 Cansu Gültürk, Hale Berber
In this study, we aimed to reveal the effective reusability of waste generated during the injection molding process of polyamide 66 (PA66) reinforced with 30 wt% of short glass fiber (PA66-GF30) widely used in the automotive industry. PA66-GF30 was subjected to the three mechanical recycling cycles, including regranulation and reinjection molding steps, and the recycled materials obtained in each of
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Effect of capillary arrays on the profile of multi-layer micro-capillary films e-Polymers (IF 3.7) Pub Date : 2023-10-16 Jianhua Xiao, Ru Yang, Shiqiang Song, Haibin Wang, Haiwei Wen
Multi-layer micro-capillary films (MCFs) have broad application prospects in the micro-fluid field. These films consist of two-dimensional arrays of hollow microcapillaries. The arrangements of hollow microcapillary arrays in extrusion die strongly influence the shape and size of multi-layer MCFs. However, most of the studies focus on a single-layer film. In this study, the models of multi-layer MCF
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Development of modified h-BN/UPE resin for insulation varnish applications e-Polymers (IF 3.7) Pub Date : 2023-10-16 Kaan Aksoy
The objective of this study is to explore the impact of a nanofiller, hexagonal boron nitride (h-BN), on the main physical, electrical, and thermal characteristics of unsaturated polyester (UPE) resin. To obtain a homogeneous dispersion, h-BN nanoparticles were surface-modified using 3-glycidoxypropyltrimethoxysilane to give S/h-BN nanoparticles. UPE-S/h-BN composites were prepared by using various
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A numerical study on thermal bonding with preheating technique for polypropylene microfluidic device e-Polymers (IF 3.7) Pub Date : 2023-10-16 Esam Abdulrahman Almezgagi, Zhihong Fu, Gongjian Huang, Xianyue Zhang
This study presents a method for producing microfluidic chips from polypropylene using a pre-heated bonding area and thermal bonding technology. ANSYS was utilized to investigate the effects of bonding parameters and microchannel deformation and predict the bonding strength. Results show that careful control of these parameters is critical to achieve a strong and durable bond between the microfluidic
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Utilization of biosilica for energy-saving tire compounds: Enhancing performance and efficiency e-Polymers (IF 3.7) Pub Date : 2023-09-27 Mohamad Irfan Fathurrohman, Santi Puspitasari, Asron Ferdian Falaah, Lydia Anggraini, Nanang Ali Sutisna, Rijal Hakiki
Energy-saving tires have been developed by researchers in the industry in order to minimize hysteresis loss. In general, this is achieved by combining precipitated silica sourced from silica sand with a silane coupling agent. This strategic reaction serves to elevate the performance characteristics of tread tire, effectively enhancing their properties. Therefore, this research is aimed to investigate
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Effect of natural Indocalamus leaf addition on the mechanical properties of epoxy and epoxy-carbon fiber composites e-Polymers (IF 3.7) Pub Date : 2023-09-22 Jiaan Liu, Sijian Lu, Xinjing Liu, Bo Wang, Zerun Yu, Chaojie Che
In this study, Indocalamus micro/nanofibers (IMFs) were extracted from natural Indocalamus leaves by physical processing and alkaline treatment. IMFs reinforced epoxy resin (EP) and their carbon-fiber composites (IMFs/CFRP) were fabricated. The effects of IMF on the mechanical properties of the EP and CFRP composites were studied. Infrared spectroscopy and scanning electron microscopy (SEM) were used
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Pineapple fruit residue-based nanofibre composites: Preparation and characterizations e-Polymers (IF 3.7) Pub Date : 2023-09-08 Sajithkumar K. Jayaprakash, Suchith Chellappan, Sruthi A. Prasannan, Vinod V. T. Padil
Natural fibre composites are widespread for being eco-friendly and having unique properties. This study prepared nanocomposites by water evaporation using cellulose nanofibres (CNFs) as fillers and natural rubber (NR) latex as the matrix. Here, CNFs were extracted from the “pineapple fruit residue,” a waste material in juice industries. These fibre-reinforced nanocomposites were prepared under three
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Mechanical properties of rCB-pigment masterbatch in rLDPE: The effect of processing aids and water absorption test e-Polymers (IF 3.7) Pub Date : 2023-09-08 Muhamad Al-Haqqem Abdul Hadi, Nor Azura Abdul Rahim, Teh Pei Leng, Chew Kang Wei, Voon Chun Hong, Wong Wee Chun
Homogenization of pigment is the key to coloring a plastic product evenly. In this article, the tensile properties of recovered carbon black merge with low molecular weight lubricants and other compounding ingredients in the form of pigment masterbatch (PM) added in a recycled low-density polyethylene (rLDPE) resin were evaluated. The prepared masterbatch with the varying amount and types of processing
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Polymer-based nanocarriers for biomedical and environmental applications e-Polymers (IF 3.7) Pub Date : 2023-08-31 Dahir Sagir Idris, Arpita Roy, Soumya Pandit, Saad Alghamdi, Mazen Almehmadi, Ahad Amer Alsaiari, Osama Abdulaziz, Abdulaziz Alsharif, Mayeen Uddin Khandaker, Mohammad Rashed Iqbal Faruque
Polymer-based nanocarriers are created from natural or synthetic polymers that are modified to form submicroscopic particles. The polymer matrix can be customized to provide specific properties, such as surface chemistry and flexibility. This allows the particles to be designed and used in different fields. They are promising nanomaterials that are used as therapeutic and diagnostic agents, and they
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Preparation and characterization of polymeric cross-linked hydrogel patch for topical delivery of gentamicin e-Polymers (IF 3.7) Pub Date : 2023-08-26 Javaria Arshad, Kashif Barkat, Muhammad Umer Ashraf, Syed Faisal Badshah, Zulcaif Ahmad, Irfan Anjum, Maryam Shabbir, Yasir Mehmood, Ikrima Khalid, Nadia Shamshad Malik, Yousef A. Bin Jardan, Hiba-Allah Nafidi, Mohammed Bourhia
This research aimed to prepare and characterize a new type of polymeric cross-linked topical hydrogel patches for the treatment of wound infections. The free radical polymerization method was used to prepare the topical hydrogel patches by utilizing natural polymers, i.e., agarose and gelatin. These natural polymers were chemically cross-linked with monomer (acrylic acid) using ammonium persulfate
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Comprehensive study of the radiation shielding feature of polyester polymers impregnated with iron filings e-Polymers (IF 3.7) Pub Date : 2023-08-24 Wafa M. Al-Saleh, Mai R. H. Dahi, M. I. Sayyed, Haifa M. Almutairi, I. H. Saleh, Mohamed Elsafi
Radiation and nuclear technologies have side effects in addition to their important applications, so appropriate shields must be used to protect users and the public from high doses as a result of exposure to this radiation. In this work, the attenuation coefficients for polyester composites doped with waste iron filings (IFs) were studied. Six samples of different IF concentrations were manufactured
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Synthesis of cadmium(ii) ion-imprinted composite membrane with a pyridine functional monomer and characterization of its adsorption performance e-Polymers (IF 3.7) Pub Date : 2023-08-22 Yuwen Hong, Xin Wang, Dongxue Fu, Guifang Wang, Li Zhao, Huiling Cheng
Cd(ii) ion was used as template ion, and N,N'-pyridine-2,6-di(2-methacrylamide) was used as the functional monomer. The experimental conditions for the synthesis of Cd(ii) ion-imprinted composite membranes (Cd(ii)-IICMs) were optimized by the surface-imprinting method, and 25 Cd(ii)-IICM1–25 and their corresponding non-imprinted composite membranes (NICM1–25) were prepared. Then, the structures of
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Impact of WO3 and BaO nanoparticles on the radiation shielding characteristics of polydimethylsiloxane composites e-Polymers (IF 3.7) Pub Date : 2023-08-22 Dalal A. Alorain, Aljawhara H. Almuqrin, M. I. Sayyed, Mohamed Elsafi
In this study, we developed flexible composites using silicone rubber (SR) or polydimethylsiloxane as the matrix and WO3 and BaO nanoparticles as filler to analyze their radiation-shielding performance. The linear attenuation coefficient (LAC) values for the prepared composites were reported to range from 0.059 to 1.333 MeV by using the experimental method. At 0.059 MeV, the SR with 40% of BaO NPs
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Preparation and performance of homogenous braids-reinforced poly (p-phenylene terephthamide) hollow fiber membranes e-Polymers (IF 3.7) Pub Date : 2023-08-21 Chun Wang, Dinghe Yan, Shubin Song, Jingjing Yan, Haolong Xue, Changfa Xiao
A novel homogenous braid-reinforced (HBR) poly (p-phenylene terephthamide) (PPTA) hollow fiber membrane was prepared in this study. The effects of PPTA concentration on the morphologies and properties of the membranes were further investigated. The results showed that when the PPTA concentration was 2.0 wt%, the cross-sectional morphology of satisfactory interfacial bonding was achieved and the permeation
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Fiber-reinforced polyvinyl alcohol hydrogel via in situ fiber formation e-Polymers (IF 3.7) Pub Date : 2023-08-19 Zheng Guo, Zebo Wang, Wei Pan, Jintao Zhang, Yu Qi, Yajie Qin, Yi Zhang
Polyvinyl alcohol (PVA) hydrogels have been extensively investigated for drug release, artificial cartilage, biosensing, and other applications owing to their good chemical stability, biocompatibility, high water absorption, and ease of processing. However, the conventional hydrogel preparation method is complex and energy-intensive, and the mechanical performance of the pure PVA hydrogel is poor,
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Influence of the molecular structure of phenylamine antioxidants on anti-migration and anti-aging behavior of high-performance nitrile rubber composites e-Polymers (IF 3.7) Pub Date : 2023-08-17 Wei Liu, Hua Zou, Baotong Xing, Shuqi Wang, Hongda Mao, Jiyang Zhang
The structure of antioxidants significantly affects the anti-migration and thermal-oxidative aging properties of nitrile butadiene rubber (NBR) composites, which are crucial for applications in aerospace, biomedical, and fuel cell stack sealing industries. The findings reveal that the migration rate of N-(4-anilino phenyl) maleic imide (MC), with a reactive double bond, is only 15.6%, exhibiting the
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Impacts of micro-size PbO on the gamma-ray shielding performance of polyepoxide resin e-Polymers (IF 3.7) Pub Date : 2023-08-11 Dalal A. Alorain, M. I. Sayyed, Aljawhara H. Almuqrin, K. G. Mahmoud
A series of polyepoxide resins doped by lead oxide with low concentrations were fabricated in order to study the impacts of low PbO concentrations on the fabricated composites’ physical- and radiation-shielding properties. The epoxide resin was reinforced with the PbO compound with concentrations 0, 5, and 10 wt%. The density measurements affirmed that by elevating the PbO concentration between 0 and
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High-strength polyvinyl alcohol-based hydrogel by vermiculite and lignocellulosic nanofibrils for electronic sensing e-Polymers (IF 3.7) Pub Date : 2023-08-10 Yaxin Hu, Jing Luo, Shipeng Luo, Tong Fei, Mingyao Song, Hengfei Qin
The use of natural polysaccharides in stretchable hydrogels has attracted more and more attention. However, pure polyvinyl alcohol (PVA) hydrogel has poor mechanical properties and low sensitivity in strain sensors. Composite hydrogels with high tensile properties (the storage modulus of 6,397.8 Pa and the loss modulus of 3,283.9 Pa) and high electrical conductivity (1.57 S·m−1) were prepared using
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Effect of different tin neodecanoate and calcium–zinc heat stabilizers on the thermal stability of PVC e-Polymers (IF 3.7) Pub Date : 2023-08-09 Xiang Wang, Chao Di, Tingwei Wang
Heat stabilizers are crucial additives for enhancing the thermal stability of polyvinyl chloride (PVC) during processing. Among the various heat stabilizers available, organic tin compounds have shown remarkable effectiveness. In this study, we investigated the use of dimethyltin dineodecanoate (DMTDN), dibutyltin dineodecanoate (DBTDN), and dioctyltin dineodecanoate (DOTDN) as heat stabilizers for
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Flammability properties of polymers and polymer composites combined with ionic liquids e-Polymers (IF 3.7) Pub Date : 2023-08-07 Ahmad Adlie Shamsuri, Mohd Zuhri Mohamed Yusoff, Khalina Abdan, Siti Nurul Ain Md. Jamil
The flammability properties of polymers and polymer composites are crucial in ensuring their safe use in various applications. The development of flame-retardant technologies continues to be an active area of research to improve the fire safety of these materials. Recently, ionic liquids have been studied in the flammability properties of polymers and polymer composites. In this concise review, different
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Ab initio molecular dynamics of insulating paper: Mechanism of insulating paper cellobiose cracking at transient high temperature e-Polymers (IF 3.7) Pub Date : 2023-08-07 Hao Yang, Xin Wang, Yimeng Duan, Haotian Zhang, Miaomiao Chen, Xinyu Wang
Oil-impregnated paper is the most widely used insulating material for power transformers. Power transformers inevitably generate a lot of heat during operation. Among them, thermal aging is one of the main forms of aging for insulating paper. In this study, the ab initio molecular dynamics method based on the density functional theory is used to simulate the cracking mechanism of cellobiose under transient
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Study on by-products synthesis of powder coating polyester resin catalyzed by organotin e-Polymers (IF 3.7) Pub Date : 2023-07-29 YuCheng Yang, Chao Di, TingWei Wang
In the production of powder-coating polyester, a strong odor emanates from the water, prompting us to investigate its composition and origin. We studied the process of powder coating epoxy/polyester 50/50, which employs butyl tin tris (2-ethyl hexanoate) as a catalyst. The esterified water was extracted using ethyl acetate. It was analyzed via GC–MS to identify the side reactions and by-products that
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Preparation and characterization of sisal fibre reinforced sodium alginate gum composites for non-structural engineering applications e-Polymers (IF 3.7) Pub Date : 2023-07-15 Balaji Rao Pradeepa, Amirthalingam V. Kiruthika
In this work, untreated/treated sisal fibre (SF)-reinforced sodium alginate composites for three different concentrations (1.5%, 2%, and 2.5%) are fabricated by the hand lay-up method, and the variations in mechanical properties such as tensile strength, flexural strength, and impact strength are studied. The treated and untreated composites are analysed and compared using scanning electron microscope
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Molecular dynamics simulations of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) and TKX-50-based PBXs with four energetic binders e-Polymers (IF 3.7) Pub Date : 2023-07-12 Hu Niu, Yan Xing, Shusen Chen, Shaohua Jin, Lijie Li
Four energetic binders, polyglycidyl nitrate (PGN), poly(3-nitratomethyl-3-methyloxetane) (PNIMMO), poly(bis(azidomethyl)oxetane) (PBAMO), and glycidyl azide polymer (GAP) were, respectively, mixed with dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50), forming TKX-50-based polymer bonded explosives (PBXs). Interfacial forces (binding energies) under different temperatures, mechanical properties
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Damping performance analysis of carbon black/lead magnesium niobite/epoxy resin composites e-Polymers (IF 3.7) Pub Date : 2023-07-12 Ming Chen, Shuang Cheng, Yanbing Wang, Zhixiong Huang
Piezoelectric damping composites with excellent damping properties were prepared from carbon black (CB), lead magnesium niobate (PMN), epoxy resin, and polyether amine D-400. The tan δ {\rm{\tan }}\delta area (TA) analysis method is used to evaluate the leading factors of damping enhancement. This method clearly shows the influence of the maximum loss factor ( tan δ {\rm{\tan }}\delta max) and effective
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Investigation of MXene-modified agar/polyurethane hydrogel elastomeric repair materials with tunable water absorption e-Polymers (IF 3.7) Pub Date : 2023-07-06 Jinbo Liu, Xuewei Tang, Xiaotong Chen, Guoqing Wang
The study of repairing materials is of paramount importance, considering that damage during usage can significantly impact performance and bring inconvenience during maintenance work. One highly sought-after material is water-swellable elastomers, known for their effect in sealing and repairing damaged materials. In this study, agar/polyurethane dual-network hydrogel elastomers were prepared, which