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Scalable Electrochemical Synthesis of Novel Biogenic Silver Nanoparticles and Its Application to High-Sensitive Detection of 4-Nitrophenol in Aqueous System Adv. Polym. Technol. (IF 1.539) Pub Date : 2021-01-18 Van-Tuan Hoang; Ngo Xuan Dinh; Tuyet Nhung Pham; Tran Vinh Hoang; Pham Anh Tuan; Tran Quang Huy; Anh-Tuan Le
This study reports a scalable green electrochemical synthesis of novel biogenic silver nanoparticles colloid (biogenic AgNPs) in large scale up to 5 liters using the bulk silver bar and the green tea leaves (Camellia sinensis) extract (GTE) as reducing agent during the electrochemical process. Under a direct-current voltage source, the biomolecules in GTE can release electrons to promote the reducing
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Supramolecular Biopolymers for Tissue Engineering Adv. Polym. Technol. (IF 1.539) Pub Date : 2021-01-13 Rosario Pérez-Pedroza; Alan Ávila-Ramírez; Zainab Khan; Manola Moretti; Charlotte A. E. Hauser
Supramolecular biopolymers (SBPs) are those polymeric units derived from macromolecules that can assemble with each other by noncovalent interactions. Macromolecular structures are commonly found in living systems such as proteins, DNA/RNA, and polysaccharides. Bioorganic chemistry allows the generation of sequence-specific supramolecular units like SBPs that can be tailored for novel applications
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The Effect of Multiwalled Carbon Nanotubes on the Thermal Conductivity and Cellular Size of Polyurethane Foam Adv. Polym. Technol. (IF 1.539) Pub Date : 2021-01-06 Huynh Mai Duc; Dat Nguyen Huu; Trung Tran Huu; Lu Le Trong; Hai Luong Nhu; Hong Phan Ngoc; Thao Nguyen Van; Quynh Hoa Kieu Thi; Giang Nguyen Vu
Polyurethane (PU) foam is known as the popular material for the applications in many fields of industry and life. To improve the mechanical and thermal properties of this material, in this research, PU foam was reinforced with aniline-modified multiwalled carbon nanotubes (MWCNTs). Fourier transform infrared FTIR spectrum of modified MWCNTs showed the aniline was grafted on the surface of MWCNTs through
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Semi-interpenetrating Network Membrane from Polyethyleneimine-Epoxy Resin and Polybenzimidazole for HT-PEM Fuel Cells Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-12-30 Chao Meng; Sheng Huang; Dongmei Han; Shan Ren; Shuanjin Wang; Min Xiao
In the present work, a semi-interpenetrating network (semi-IPN) high-temperature proton exchange membrane based on polyethyleneimine (PEI), epoxy resin (ER), and polybenzimidazole (PBI) was prepared and characterized, aiming at their future application in fuel cell devices. The physical properties of the semi-IPN membrane are characterized by thermogravimetric analysis (TGA) and tensile strength test
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Development and Performance Evaluation of Cellulose Acetate-Bentonite Mixed Matrix Membranes for CO2 Separation Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-12-14 Asif Jamil; Momina Zulfiqar; Usama Arshad; Subhan Mahmood; Tanveer Iqbal; Sikander Rafiq; Muhammad Z. Iqbal
Membrane science is a state-of-the-art environmentally green technology that ascertains superior advantages over traditional counterparts for CO2 capture and separation. In this research, mixed matrix membranes (MMMs) comprising cellulose acetate (CA) with various loadings of bentonite (Bt) clay were fabricated by adopting the phase-inversion technique for CO2/CH4 and CO2/N2 separation. The developed
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Study of Residual Wall Thickness and Multiobjective Optimization for Process Parameters of Water-Assisted Injection Molding Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-12-11 Jiangen Yang; Shengrui Yu; Ming Yu
Residual wall thickness is an important indicator for water-assisted injection molding (WAIM) parts, especially the maximization of hollowed core ratio and minimization of wall thickness difference which are significant optimization objectives. Residual wall thickness was calculated by the computational fluid dynamics (CFD) method. The response surface methodology (RSM) model, radial basis function
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Peroxymonosulfate Activation on a Hybrid Material of Conjugated PVC and TiO2 Nanotubes for Enhancing Degradation of Rhodamine B under Visible Light Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-11-26 La Phan Phuong Ha; Tran Hong Huy; Pham Huu Huan; Nguyen Thi Minh Thu; Cao Minh Thi; Pham Van Viet
Visible-light-driven photocatalysis is a robust technology for amending the negative effect of pollutants on the environment with a minimum energy use. Herein, we describe a simple approach to producing such a photocatalyst by coupling conjugated polyvinyl chloride (cPVC) with the TiO2 nanotube (TNT) thermolysis method. By activating peroxymonosulfate (PMS) to make a cPVC/TNT/PMS system using visible
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Effect Of Magnesium Perchlorate Content on the Mechanical, Thermal Stability, and Dielectric Properties of Plasticized PMMA/PVC-g-PMMA Electrolytes Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-11-16 Nguyen Thi Kim Dung; Nguyen Thi Dieu Linh; Do Quang Tham; Nguyen Thuy Chinh; Man Minh Tan; Tran Thi Mai; Nguyen Thi Thu Trang; Do Minh Thanh; Nguyen Quang Tung; Thai Hoang
In this study, new types of gel polymer blend electrolytes (GPBEs) were prepared with the synthesized PVC-g-PMMA graft copolymer, PMMA, plasticizers (propylene carbonate (PC), dioctyl phthalate (DOP)), and different loadings of Mg(ClO4)2 via the solution casting method using tetrahydrofuran as solvent. Fourier transform infrared (FTIR) spectra of the electrolytes showed mutual molecular interactions
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GC-FID and Olfactometry-Assisted Assessment of Odors from Polymeric Foams under Normal and Repeated-Use Conditions Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-11-09 Alena Capíková; Daniela Tesařová; Josef Hlavaty; Adam Ekielski; Pawan Kumar Mishra
Polymeric foams are the primary components of upholstered furniture, and their emissions play a decisive role in the acceptability of the final furniture product. This study is focused on passive emissions and odors from commercial foams under normal and repeated-use conditions. Six different types of foams, viz., highly elastic foam K5040, standard PU foam N5063, bonded polyurethane foam R100, viscoelastic
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Ductile to Brittle Transition of Short Carbon Fiber-Reinforced Polypropylene Composites Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-11-05 Harri Junaedi; Essam Albahkali; Muneer Baig; Abdulsattar Dawood; Abdulhakim Almajid
In this work, the ductile to brittle transition behavior of short carbon fiber (SCF)-reinforced polypropylene (PP) composite is studied. Initially, the SCF-reinforced PP composites with a varying composition of SCF in the range of 0–40 wt% loading were first melt-mixed in a twin-screw extruder and later injection-molded to produce the testing samples. The experimental results indicate that with an
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The Effect of PVP Molecular Weight on Dissolution Behavior and Physicochemical Characterization of Glycyrrhetinic Acid Solid Dispersions Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-31 Xiaoyu Sui; Yan Chu; Jie Zhang; Honglian Zhang; Huiyu Wang; Tingting Liu; Cuiyan Han
The effect of polyvinylpyrrolidone (PVP) as glycyrrhetic acid (GA) solid dispersions carrier at different molecular weights on the dissolution behavior and physicochemical properties was investigated. PVP-GA-SDs prepared with all four molecular weight PVPs displayed good enhancement of dissolution rate and equilibrium solubility compared with pure drug and corresponding physical mixtures. The results
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Experimental and Numerical Study Determining the Warpage Phenomenon of Thin-Wall Injection Molding Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-28 Yueh-Tzu Huang; Chiung-Fang Huang; Bou-Yue Peng; Chun-Wei Chang; Hsing-Chung Cheng; Yi Lin; Yung-Kang Shen; Hao Wang
This study emphasizes the warpage phenomenon of thin-walled parts using acrylonitrile-butadiene styrene (ABS) plus polycarbonate (PC) plastics for optimal processing by thin-wall injection molding. The authors first employed the Moldflow software to analyze the runner’s balance on multicavities for thin-walled parts and to simulate the warpage of thin-walled parts with thin-wall injection molding.
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Preparation and Characterization of Liposomal Everolimus by Thin-Film Hydration Technique Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-10 Gabriela Torres-Flores; Azucena Gonzalez-Horta; Yadira I. Vega-Cantu; Ciro Rodriguez; Aida Rodriguez-Garcia
In 10% to 40% of the cases of coronary stent implantation, patients face in-stent restenosis due to an inflammatory response, which induces artery thickening. Everolimus, a drug that inhibits growth factor-stimulated cell proliferation of endothelial cells, represents a promising alternative to prevent in-stent restenosis. In this study, everolimus was encapsulated by a film hydration technique in
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Studies on Hydration Swelling and Bound Water Type of Sodium- and Polymer-Modified Calcium Bentonite Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-09 Yong Wan; Dongdong Guo; Xinminnan Hui; Lei Liu; Yuan Yao
Modified calcium bentonite (Ca-bentonite) is extensively used in engineered barrier systems (EBSs) for municipal and industrial disposal sites due to its high swelling potential and low hydraulic conductivity. However, few studies have focused on the micromechanism of hydration and swelling under the effect of inorganic chemical solution. In this study, free swell index (FSI) and the type and content
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Metal-Organic Framework MIL-53(Fe): Synthesis, Electrochemical Characterization, and Application in Development of a Novel and Sensitive Electrochemical Sensor for Detection of Cadmium Ions in Aqueous Solutions Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-06 Hoang Vinh Tran; Hue Thi Minh Dang; Luyen Thi Tran; Chau Van Tran; Chinh Dang Huynh
A metal-organic framework MIL-53(Fe) was successfully synthesized by a simple hydrothermal method. A synthesized MIL-53(Fe) sample was characterized, and results indicated that the formed MIL-53(Fe) was a single phase with small particle size of 0.8 μm and homogeneous particle size distribution was obtained. The synthesized MIL-53(Fe) has been used to modify a glassy carbon electrode (GCE) by a drop-casting
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Study of Raw and Recycled Polyethylene Terephthalate by Meaning of TGA and Computer Simulation Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-05 Bouzid Latifa; Fouddad Fatma Zohra; Hiadsi Said
The pyrolysis method of both raw and recycled polyethylene terephthalate was studied using the nonisothermal thermogravimetric analysis (TGA) at different five heating rates (10, 15, 20, 25, and 30 K/min) for each element. Without using any mathematical equations, the kinetic parameters of polyethylene terephthalate pyrolysis were obtained by applying the modified distributed activation energy model
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Transpicuous-Cum-Fouling Resistant Copolymers of 3-Sulfopropyl Methacrylate and Methyl Methacrylate for Optronics Applications in Aquatic Medium and Healthcare Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-10-05 Shehla Mushtaq; Nasir M. Ahmad; Habib Nasir; Azhar Mahmood; Hussnain A. Janjua
The scope of optical sensors and scanners in aquatic media, fluids, and medical diagnostics has been limited by paucity of transparent shielding materials with antifouling potential. In this research endeavor, facile synthesis, characterization, and bioassay of antifouling transparent functional copolymers are reported. Copolymers of 3-sulfopropyl methacrylate (SPMA) and methyl methacrylate (MMA) were
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RAFT Copolymerization of Styrene and Maleic Anhydride with Addition of Ascorbic Acid at Ambient Temperature Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-09-25 Juxiang Luo; Deshu Cheng; Mingchun Li; Meihua Xin; Weifu Sun; Wangchuan Xiao
A novel method for RAFT copolymerization of styrene (St) and maleic anhydride (MAh) at ambient temperature using ascorbic acid (Asc) as an initiator is reported. Various experimental conditions including reaction component, monomer composition, the amount of Asc, and temperature were investigated in terms of monomer conversion, molecular weight, and molecular weight distribution. In this system, the
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Self-Healing Polyurethane-Based Nanocomposites Modified with Carbon Fibres and Carbon Nanotubes Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-30 Szatkowski Piotr; Pielichowska Kinga; Blazewicz Stanislaw
Self-healing polyurethanes (PUs) were synthesized as a matrix of nanocomposites containing two fibrous carbon components, i.e., functionalized carbon nanotubes (CNF-OH) and short carbon fibers (CF). Two types of PUs differing in the content of flexible chain segments (40% and 50%) were used. Changes in mechanical strength were analyzed to assess the ability to self-healing of PU-based matrix nanocomposites
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Chitosan-Reinforced MFC/NFC Aerogel and Antibacterial Property Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-26 Huanlei Yang; Shuxin Zhang; Jinhua Yan
MFC/NFC aerogel has water sensitivity, and it should be improved in strength in water before application. Chitosan was investigated as a MFC/NFC aerogel reinforcing agent in this paper. The reinforced aerogel showed slightly tighter structure and very good water stability and mechanical strength. FTIR disclosed the chemical bonds formed between chitosan and cellulose. Nanoparticles of silver (Ag-NPs)
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Nonisothermal Kinetic Analysis and AC Conductivity for Polyvinyl Chloride (PVC)/Zinc Oxide (ZnO) Nanocomposite Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-17 Huda AlFannakh
The behavior of polyvinyl chlorine (PVC)/zinc oxide (ZnO) nanoparticles was investigated. To improve the dispersion and distribution of zinc nanoparticles within the host polymer (PVC), they were treated with water before being added to the polymer. The nanocomposite samples were prepared by casting method using different weight ratios of ZnO nanoparticles. The prepared nanocomposite samples were characterized
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3D Network Structural Poly (Aryl Ether Ketone)-Polybenzimidazole Polymer for High-Temperature Proton Exchange Membrane Fuel Cells Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-14 Junqiao Jiang; Erli Qu; Min Xiao; Dongmei Han; Shuanjin Wang; Yuezhong Meng
Poor mechanical property is a critical problem for phosphoric acid-doped high-temperature proton exchange membranes (HT-PEMs). In order to address this concern, in this work, a 3D network structural poly (aryl ether ketone)-polybenzimidazole (PAEK-cr-PBI) polymer electrolyte membrane was successfully synthesized through crosslinking reaction between poly (aryl ether ketone) with the pendant carboxyl
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Evaluation of the Potential Use of Levan Polysaccharide in Paper Conservation Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-10 Rumeysa Ozen Saglam; Seval Genc; Ebru Toksoy Oner
Conservation of paper-based materials, namely, manuscripts, includes repair of tears, gap filling, consolidation, and fixation, which requires the use of adhesives. The adhesive in use for these purposes should be compatible with the chemical and physical properties of paper and should present good aging characteristics. In this study, we conducted a set of experiments with paper samples on which fructan-based
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3D In Vitro Human Organ Mimicry Devices for Drug Discovery, Development, and Assessment Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-10 Aida Rodriguez-Garcia; Jacqueline Oliva-Ramirez; Claudia Bautista-Flores; Samira Hosseini
The past few decades have shown significant advancement as complex in vitro humanized systems have substituted animal trials and 2D in vitro studies. 3D humanized platforms mimic the organs of interest with their stimulations (physical, electrical, chemical, and mechanical). Organ-on-chip devices, including in vitro modelling of 3D organoids, 3D microfabrication, and 3D bioprinted platforms, play an
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3-Bromopyridine-Heterogenized Phosphotungstic Acid for Efficient Trimerization of Biomass-Derived 5-Hydroxymethylfurfural with 2-Methylfuran to C21 Fuel Precursor Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-06 Yufei Xu; Zhaozhuo Yu; Hu Li; Song Yang
The production of long-chain carbon compounds (C9-C21) from biomass derivatives to alternate traditional fossil diesel is sustainable, eco-friendly, and potentially economic for modern industry. In this work, phosphotungstic acid heterogenized by 3-bromopyridine was achieved using a solvothermal method, which was demonstrated to be efficient for trimerization of biomass-derived 5-hydroxymethylfurfural
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A Review of Methods Used to Reduce the Effects of High Temperature Associated with Polyamide 12 and Polypropylene Laser Sintering Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-08-04 Fredrick M. Mwania; Maina Maringa; Kobus van der Walt
The polymer laser sintering (PLS) process is one of the most promising additive manufacturing (AM) technologies for polymeric materials. However, the technique has challenges because the physical, mechanical, and chemical properties of the polymeric powder deteriorate due to the high temperatures prevailing in the build chamber during manufacture. These high temperatures cause agglomeration of powder
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Synthesis of Graphene Oxide-Polystyrene Graft Polymer Based on Reversible Addition Fragmentation Chain Transfer and Its Effect on Properties, Crystallization, and Rheological Behavior of Poly (Lactic Acid) Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-29 Li Yang; Weijun Zhen
Graphene oxide-polystyrene graft polymer (SGO-PS) was prepared by reversible addition-fragmentation chain transfer radical polymerization method. Orthogonal experiments indicated that the optimum synthesis reaction conditions for SGO-PS were as follows: the millimole ratio of chain transfer agent to initiator was 0.15 : 0.3, and the amount of styrene was 8 mL at 80°C for 12 hours. The products were
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Separation of CO2 from Small Gas Molecules Using Deca-Dodecasil 3 Rhombohedral (DDR3) Membrane Synthesized via Ultrasonically Assisted Hydrothermal Growth Method Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-20 Muhammad Mubashir; Yeong Yin Fong; Sidra Saqib; Ahmad Mukhtar; Sikander Rafiq; Muhammad Bilal K. Niazi; Muhammad Babar; Sami Ullah; Abdullah G. Al-Sehemi; Farrukh Jamil
Deca-dodecasil 3 rhombohedral (DDR3) membrane has received much attention in CO2 separation from small gas molecules because of its molecular sieving property and stable characteristics. Therefore, the present work is focusing on the utilization of previously fabricated membrane (synthesized in 3 days as reported in our previous work) to study the effect of hydrocarbons and its durability at the previously
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A Novel Gel Polymer Electrolyte by Thiol-Ene Click Reaction Derived from CO2-Based Polycarbonate for Lithium-Ion Batteries Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-17 Wenhan Luo; Kuirong Deng; Shuanjin Wang; Shan Ren; Dongmei Han; Yufei Wang; Min Xiao; Yuezhong Meng
Here, we describe the synthesis of a CO2-based polycarbonate with pendent alkene groups and its functionalization by grafting methoxypolyethylene glycol in view of its application possibility in gel polymer electrolyte lithium-ion batteries. The gel polymer electrolyte is prepared by an in-situ thiol-ene click reaction between polycarbonate with pendent alkene groups and thiolated methoxypolyethylene
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Magnetic Colloidal Particles in Combinatorial Thin-Film Gradients for Magnetic Resonance Imaging and Hyperthermia Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-14 Sumera Khizar; Nasir Mahmood Ahmad; Hassan Saleem; Muhammad Asif Hamayun; Sadia Manzoor; Noureddine Lebaz; Abdelhamid Elaissari
A stable oil-in-water (O/W) magnetic emulsion was prepared by the emulsification of organic ferrofluid in an aqueous media, and its theranostic applications were investigated. The synthesis and characterization of the organic ferrofluid were carried out comprising of superparamagnetic maghemite nanoparticles with oleic acid coating stabilized in octane. Both exhibit spherical morphology with a mean
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Low-Density Polyethylene Films Carrying ferula asafoetida Extract for Active Food Packaging: Thermal, Mechanical, Optical, Barrier, and Antifungal Properties Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-13 Razieh Niazmand; Bibi Marzieh Razavizadeh; Farzaneh Sabbagh
The physical, thermal, mechanical, optical, microstructural, and barrier properties of low-density polyethylene films (LDPE) containing ferula asafoetida leaf and gum extracts were investigated. Results showed a reduction in elasticity and tensile strength with increasing extract concentration in the polymer matrix. The melting temperature and enthalpy increased with increasing concentration of extracts
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Microencapsulation Delivery System in Food Industry—Challenge and the Way Forward Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-13 Mingyi Yang; Ze Liang; Lei Wang; Ming Qi; Zisheng Luo; Li Li
Microencapsulation is a promising technique, which provides core materials with protective barrier, good stability, controlled release, and targeting delivery. Compared with the pharmaceutical, cosmetic, and textile industries, food processing has higher requirements for safety and hygiene and calls for quality and nutrition maintenance. This paper reviews the widely used polymers as microcapsule wall
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Effect of Oxidized Wood Pulp Fibers on the Performance of the Thermoplastic Corn Starch Composites Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-07-08 Peng Yin; Wen Zhou; Xin Dong; Bin Guo; Yanan Huang
In this study, oxidized wood pulp fiber (OWPF) was prepared by oxidizing wood pulp fiber (WPF) with NaIO4, and OWPFs with different oxidation degrees were obtained and characterized by light microscope, XRD, and TG. Then, OWPFs with different oxidation degrees were incorporated into thermoplastic starch (TPS) to prepare OWPF/TPS composites. The cross-section morphology, water resistance, and physical
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Finite Element Failure Analysis of GFRP Laminates in Plate-Cone Reticulated Shell Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-19 Xing Wang; Yu Jiang; Yonghui Huang; Yue Huang; Fan Wang
Plate-cone reticulated shell is a new type of spatial structures with good mechanical behavior, technical economy, and architectural appearance. In this paper, using ANSYS software, the strength failure analysis model of composite laminates is established in cooperation with the Strength Criterion of Hoffman. The effects of layer number, laying direction, and thickness of laminates on the ultimate
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Effects of Nanofilled Particle Forms and Dispersion Modes on Properties of Carbon-Based Energy Storage Composites Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-16 Jia Yu; Hui Li; Li Kong; Hongji Zhu; Qingshan Zhu; Haoqing Wang
How to improve the thermal conductivity of phase change materials (PCMs) is always the key to thermal control technology. At present, the thermal conductivity of PCMs has two ways to improve: one is to fill the matrix with high thermal conductivity and the other is to fill nanoparticles. After combining the two methods, the choice of filled nano-SiO2, carbon nanotubes (CNTs), or graphene (GNPs) has
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The Effect of Oxetane as Active Diluent on Cationic UV Curing System of Fluorine-Containing Epoxy Prepolymer Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-13 Baihong Chi; Mengying Wei; Yong He
A series of fluorine-containing polyacrylic epoxy (FPAE) prepolymers with different fluorine content and molecular weight are synthesized by solution free radical polymerization of hexafluorobutyl methacrylate (HFBMA), butyl acrylate (BA), and glycidyl methacrylate (GMA). The synthesized prepolymers show high conversion and low volume shrinkage. The effect of different types of active diluent for the
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Anticancer and Antibacterial Activity of Cadmium Sulfide Nanoparticles by Aspergillus niger Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-08 Mohammed S. Alsaggaf; Ashraf F. Elbaz; Sherine El-baday; Shaaban H. Moussa
Cadmium-tolerant (6 mM) Aspergillus niger (RCMB 002002) biomass was challenged with aqueous cadmium chloride (1 mM) followed by sodium sulfide (9 mM) at 37°C for 96 h under shaking conditions (200 rpm), resulting in the formation of highly stable polydispersed cadmium sulfide nanoparticles (CdSNPs). Scanning electron microscopy revealed the presence of spherical particles measuring approximately 5 nm
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Diminution of Weight and Heat Accumulation in Transfemoral Socket Using PE/MWCNT Composite Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-05 Broster Maria Viswasam; Anderson Arul Gnana Dhas
The socket plays an important role in prostheses by providing structural integrity and suspension to the distal thigh of an amputee. Heat accumulation and weight of the socket increase the energy consumption in the amputee. To overcome the same, widely used polyester-based sandwich-structured composite was reinforced with 0.2, 0.4, 0.6, 0.8, and 1 wt% multiwalled carbon nanotube (MWCNT) and analyzed
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Dynamic Characteristics and Chloride Resistance of Basalt and Polypropylene Fibers Reinforced Recycled Aggregate Concrete Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-02 Dong Lu; Hui Cao; Qiangru Shen; Yue Gong; Cheng Zhao; Xiaohui Yan
Fiber polymer has been extensively used to improve the mechanical properties and durability of concrete. However, the studies of the effect of fiber polymer on the dynamic performance of recycled aggregate concrete (RAC) is still very limited. In this study, we prepared two types of RAC formulations: RAC reinforced with basalt fibers (BFs) and RAC reinforced with polypropylene fibers (PPs), and compared
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Functional Glycopolypeptides: Synthesis and Biomedical Applications Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-06-02 Zhao Wang; Xiaojuan Zhang; Qing Lin; Jingjing Sun; Santanu Bhattachaya; Guosong Chen; Ruilong Sheng
Employing natural-based renewable sugar and saccharide resources to construct functional biopolymer mimics is a promising research frontier for green chemistry and sustainable biotechnology. As the mimics/analogues of natural glycoproteins, synthetic glycopolypeptides attracted great attention in the field of biomaterials and nanobiotechnology. This review describes the synthetic strategies and methods
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Effect of Cross-Sectional Aspect Ratio on Rectangular FRP-Concrete-Steel Double-Skin Tubular Columns under Axial Compression Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-27 Bing Zhang; Xia-Min Hu; Wei Wei; Qian-Biao Zhang; Ning-Yuan Zhang; Yi-Jie Zhang
Hybrid FRP-concrete-steel double-skin tubular columns (hybrid DSTCs) are novel hollow columns consisting of an outer FRP tube, an inner steel tube, and the concrete between the two tubes. Hybrid DSTCs possess important advantages, such as excellent corrosion resistance as well as remarkable seismic resistance. However, existing studies are mainly focused on hybrid DSTCs with a circular cross section
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Surface Modification of TFC-PA RO Membrane by Grafting Hydrophilic pH Switchable Poly(Acrylic Acid) Brushes Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-22 Muhammad Asad Abbas; Shehla Mushtaq; Waqas A. Cheema; Hazim Qiblawey; Shenmin Zhu; Yao Li; Runnan Zhang; Hong Wu; Zhongyi Jiang; Rehan Sadiq; Nasir M. Ahmad
The grafting of pH-responsive poly(acrylic acid) (PAA) brushes was carried out on the surface of a commercial TFC-PA membrane using surface-initiated atom transfer radical polymerization (SI-ATRP). Poly(t-butyl acrylate) was polymerized through the SI-ATRP method followed by its acid hydrolysis to form PAA hydrophilic polymer brushes. Surface morphology, permeation flux, salt rejection, and pore sizes
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Influence of Polypropylene Fibre (PF) Reinforcement on Mechanical Properties of Clay Soil Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-19 Mazahir M. M. Taha; Cheng Pei Feng; Sara H. S. Ahmed
This study investigated the effects of polypropylene fibre (PF) reinforcement on the mechanical behaviour of clay soil. Using clay soil and polypropylene fibres from China’s Inner Mongolia and Hebei Provinces, respectively, a series of soil samples with 0%, 1.5%, 2.25%, and 3% PF content by soil weight were subjected to compaction, shear strength, consolidation, California bearing ratio, and microstructure
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Purification, Preliminary Structural Characterization, and In Vitro Inhibitory Effect on Digestive Enzymes by β-Glucan from Qingke (Tibetan Hulless Barley) Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-19 Jialiang Hu; Yue Wu; Huifang Xie; Wanyin Shi; Zhiyuan Chen; Dan Jiang; Hui Hu; Xiangwei Zheng; Jian Xu; Yuejun Yang; Yuancai Liu
Background and Objective. Qingke (Tibetan hulless barley, Hordeum vulgare L.) contains a high content of β-glucan among all the cereal varieties. Although β-glucan has multiple physiological functions, the physiological function of qingke β-glucan was few studied. In this study, the β-glucan was isolated, purified, determined the structural characterization, and measured the inhibitory activity to
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Development of Nanozyme-Labeled Biomimetic Immunoassay for Determination of Sulfadiazine Residue in Foods Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-12 Jingbo He; Li Zhang; Longhua Xu; Feifan Kong; Zhixiang Xu
The excessive use and ingestion of residues of sulfonamides harm the human body and the environment. To meet the requirements of the maximum residue limit specified by the Ministry of Agriculture of China, a rapid detection method urgently needs to be developed. In the present study, a molecularly imprinted polymer (MIP) that could selectively recognize sulfadiazine (SDZ) was prepared using SDZ as
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Melatonin-Loaded Nanoparticles for Enhanced Antidepressant Effects and HPA Hormone Modulation Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-09 Min Si; Qianshu Sun; Hongcheng Ding; Chengcheng Cao; Mingwei Huang; Qian Wang; Hua Yang; Yi Yao
Background. The present work aims at formulating the melatonin-loaded nanoparticles (MTNPs) exhibiting the controlled-release and pH-sensitivity to repurpose the use of melatonin in the treatment of depressive-like behaviors and hypothalamus-pituitary-adrenal (HPA) axis dysregulation. Methods. MTNPs were characterized for the size, drug incorporation, and in vitro release in the different pH environments
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A Nitrogen-Rich Covalent Triazine Framework as a Photocatalyst for Hydrogen Production Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-07 Ruizhi Gong; Liuliu Yang; Shuo Qiu; Wan-Ting Chen; Qing Wang; Jiazhuo Xie; Geoffrey I. N. Waterhouse; Jing Xu
Covalent triazine frameworks (CTFs) have emerged as new candidate materials in various research areas such as catalysis, gas separation storage, and energy-related organic devices due to their easy functionalization, high thermal and chemical stability, and permanent porosity. Herein, we report the successful synthesis of a CTF rich in cyano groups (CTF-CN) by the solvothermal condensation of 2,3,6
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Numerical Simulation during Short-Shot Water-Assisted Injection Molding Based on the Overflow Cavity for Short-Glass Fiber-Reinforced Polypropylene Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-05 Zhong Yu; He-Sheng Liu; Tang-Qing Kuang; Xing-Yuan Huang; Wei Zhang; Zhong-Shi Chen; Kai Zhang
Compared with water penetration condition of short-shot water-assisted injection molding with or without overflow cavity, it can be known from theory and common knowledge that short-shot water-assisted injection molding with overflow cavity has many advantages, such as it can save materials and energy. Then, the effects of melt short shot size, water injection delay time, melt temperature and water
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Circumferential Expansion Property of Composite Wrapping System for Main Cable Protection of Suspension Bridge Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-05 Pengfei Cao; Hai Fang; Weiqing Liu; Yong Zhuang; Yuan Fang; Chenglin Li
A composite wrapping system for main cable protection of suspension bridges was designed by using prepreg fiber-reinforced composites and nitrile rubber. The circumferential expansion performance of the system was tested, and the curves of circumferential bearing capacity and radial displacement of the components were obtained. Failure modes of each group of components were compared and analyzed. The
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Nuclear-Targeting Delivery of CRISPRa System for Upregulation of β-Defensin against Virus Infection by Dexamethasone and Phenylalanine Dual-Modified Dendrimer Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-04 Mingxiang Zuo; Xiaoxia Li; Shuang Liu; Bin Chen; Du Cheng
The dual-modified dendrimer containing dexamethasone (DET) and phenylalanine (Phe) was prepared to deliver plasmid DNA encoding dCas9 and single-guide RNA (sgRNA) for specific upregulation of β-defensin. DET and Phe moieties synergistically enhanced the transfection efficiency and reduced cytotoxicity of dendrimers. Combination of three sgRNAs targeting β-defensin gene demonstrated higher activation
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Towards Analysis and Optimization of Electrospun PVP (Polyvinylpyrrolidone) Nanofibers Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-05-04 Utkarsh; Hussien Hegab; Muhammad Tariq; Nabeel Ahmed Syed; Ghaus Rizvi; Remon Pop-Iliev
In this study, the polymeric nanofibers of polyvinylpyrrolidone (PVP) were manufactured using the electrospinning technique. The electrospinning process parameters such as voltage, polymer concentration, rotational speed of the collecting drum, collecting distance, and flow rate were optimized to obtain the minimum fiber diameter for sound absorption applications. The effects of these parameters on
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Manufacturing and Evaluation of Mechanical, Morphological, and Thermal Properties of Reduced Graphene Oxide-Reinforced Expanded Polystyrene (EPS) Nanocomposites Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-25 Tomasz Rydzkowski; Kazimierz Reszka; Mieczysław Szczypiński; Michał Marek Szczypiński; Elżbieta Kopczyńska; Vijay Kumar Thakur
The aim of the present study is to examine the effect of the addition of carbon nanoparticles (σsp2 hybridization) on the mechanical properties of foamed polystyrene. In this work, we focus on the study of the impact of compressive stress, tensile strength, bending strength, thermal conductivity ratio (λ), and water absorption of expanded polystyrene (EPS) reinforced with reduced graphene oxide and
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Finite Element Analysis of the Nanomechanics of Hard Coatings on a Soft Polymer Substrate by a Spherical Indenter Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-24 Chunlai Tian; Pengfei Duan
Composite has been widely used in various fields due to its advanced performance. To reveal the relation between the mechanical properties of the composite and that of each individual component, finite element analysis (FEA) has usually been adopted. In this study, in order to predict the mechanical properties of hard coating on a soft polymer, the response of this coating system during nanoindentation
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Electrodeposition of Hydroxyapatite-Multiwalled Carbon Nanotube Nanocomposite on Ti6Al4V Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-15 Thom T. Nguyen; Nam T. Pham; Thanh T. M. Dinh; Thu T. Vu; Hai S. Nguyen; Lam D. Tran
This work aims to study the optimal conditions to synthesize hydroxyapatite-multiwalled carbon nanotube (HAp-MWCNT) coatings on Ti6Al4V by electrodeposition technique. The structural behaviors, morphology, and mechanical properties of the coatings were characterized by various advanced methods. The analyzed results showed that the obtained coatings were composed of hydroxyapatite (HAp) and multiwalled
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Preparation and Characterization of Hydrophilic Wetting-Modified Polyamide Fibers Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-13 Liang Li; Shuping Liu; Rangtong Liu; Changjun Geng; Zedong Hu
To improve the moisture absorption and air permeability of polyamide (PA) fibers, the modified fibers with porous structure were fabricated by melt spinning using polyethylene glycol (PEG) as the pore-forming agent due to its high solubility in water. The effects of pores caused by different PEG contents on the structure and properties of modified fibers were analyzed by electron microscopy (SEM),
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Polyethylene and Polyvinyl Chloride-Blended Polystyrene Nanofibrous Sorbents and Their Application in the Removal of Various Oil Spills Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-08 Mohamed. A. Alnaqbi; Afra G. Al Blooshi; Yaser E. Greish
Polymers provide a wide range of properties, and these properties can be greatly enhanced and modified through polymer blending. Polymer blending combines the properties and advantages of their original polymers. This paper showcases hydrophobic polymers prepared through polymer blending; these blends are characterized and evaluated for their efficiency in the removal of crude oil spills from aqueous
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Tensile Behavior of Acrylonitrile Butadiene Styrene at Different Temperatures Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-04 Jiquan Li; Yadong Jia; Taidong Li; Zhou Zhu; Hangchao Zhou; Xiang Peng; Shaofei Jiang
Temperature greatly influences the mechanical response of acrylonitrile butadiene styrene (ABS). The tensile behavior of ABS was explored in this study. The tensile experiments were conducted at a wide range of temperatures (from 40°C to 130°C). A model was established to reveal the quantitative relationship between temperature and tensile behavior of ABS. The results of tensile experiments showed
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Facile Method for Obtaining Gold-Coated Polyester Surfaces with Antimicrobial Properties Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-02 M. Drobota; M. Butnaru; N. Vornicu; O. Plopa; M. Aflori
The antimicrobial and antifungal activity of polymers used in medical devices has been extensively studied due to the growing impact of hospital-related infections in patients. The ideal biocidal polymeric materials should be very effective in the microorganism’s inhibition, not toxic to the human body, and environmentally friendly. In this context, this work is aimed at obtaining antimicrobial and
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Tea Polysaccharide (TPS) Reduces Astrocytes Apoptosis Induced by Oxygen-Glucose Deprivation/Reoxygenation by Regulating the miR-375/SRXN1 Axis Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-02 Ying Jiang; Hongmei Sun; Zhiqi Yin; Jun Yan
Objective. To investigate the effect of tea polysaccharides (TPS) mediated by miR-375/SRXN1 axis on mice with cerebral ischemia-reperfusion injury and proliferation and apoptosis of astrocytes (AS) conducted with oxygen-glucose deprivation/reoxygenation (OGD/R). Methods. Mouse model of middle cerebral artery occlusion (MCAO) and OGD/R-induced AS injury model were established; brain obstruction volume
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Polymethacrylate Sphere-Based Assay for Ultrasensitive miRNA Detection Adv. Polym. Technol. (IF 1.539) Pub Date : 2020-04-01 Samira Hosseini; Patricia Vázquez-Villegas; Richard C. Willson; Marco Rito-Palomares; Margarita Sanchez-Dominguez; Leo H. Koole; Marc J. Madou; Sergio O. Martínez-Chapa
Although microRNAs (miRNAs) have emerged as increasingly important target analytes, their biorecognition remains challenging due to their small size, high sequence homology, and low abundance in clinical samples. Nanospheres and microspheres have also gained increasing attention in biosensor applications due to their high specific surface area and the wide variety of compositions available. In this
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