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Synthesis and characterization of poly-3-(9H-carbazol-9-yl)propylmethacrylate as a gel electrolyte for dye-sensitized solar cell applications Polym. Bull. (IF 2.014) Pub Date : 2021-01-18 Ummu Habeeba Abdul Azeez, Ahalya Gunasekaran, Andrea Sorrentino, Asad Syed, Najat Marraiki, Sambandam Anandan
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Grafted poly (vinyl alcohol) functionalized by folic acid and its transdermal microneedles Polym. Bull. (IF 2.014) Pub Date : 2021-01-16 Weijun Liu, Wenjing Guo, Mei Yang, Xiaoduo Zhang, Fanhong Wu
A well-soluble grafted polymer of poly (vinyl alcohol) (PVA) used to fabricate dissolved microneedles was achieved through classic Michael addition and the functionalization of folate-targeted ligand. FTIR, Raman spectrum and 1H-NMR characterization ascertained the microstructure of resulted polymer. XPS analysis further confirmed the reasonability of analytic structure as well as the functionalized
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Polystyrene-supported bromoderivative of 2-pyrrolidone: synthesis, characterization and application in microwave-assisted bromination reactions Polym. Bull. (IF 2.014) Pub Date : 2021-01-16 Anjaly Mathew, Beena Mathew, Ebey P. Koshy
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Mustard oil thermosets using N -vinyl-2-pyrrolidone as crosslinking agent for scrap paper composites Polym. Bull. (IF 2.014) Pub Date : 2021-01-16 Nilesh C. Jadhav, Ravindra D. Kale
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Bridging the gap between rubbers and plastics: a review on thermoplastic polyolefin elastomers Polym. Bull. (IF 2.014) Pub Date : 2021-01-15 Aishwarya S. Mohite, Yash D. Rajpurkar, Aarti P. More
Thermoplastic elastomers (TPE) are studied for their unique properties of being easily processes and recycled. This paper focuses on the wide scope of thermoplastic polyolefin elastomers (TPO/TPE-O) which is one of the major classes of TPE. The performance of TPO is the cumulative effect of polyolefins and rubbers with the ease of processing due to the presence of thermoplastics. The study focuses
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Characteristics of silicon carbide sludge-based geopolymers Polym. Bull. (IF 2.014) Pub Date : 2021-01-15 Kae-Long Lin, Kang-Wei Lo, Ta-Wui Cheng
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Comparative study of the optoelectronic properties of diketopyrrolopyrrole based polymers obtained by direct C-H arylation Polym. Bull. (IF 2.014) Pub Date : 2021-01-15 Mohamed Shaker
Donor–acceptor (D-A) type of new constituted diketopyrrolopyrrole-based polymers, PDPP-EDOT (poly A), PDPP-TP (poly B), and PDPP-EBTE (poly C), were synthesized by one-pot direct C–H heteroarylation polymerization methodology supported by Pd(OAc)2/Bu4NBr catalytic system. C–H heteroarylation coupling of highly selective sites avoided the difficulty of the synthesis using organometallic reagent and
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Development of poly(1-vinylimidazole)-chitosan composite sorbent under microwave irradiation for enhanced uptake of Cd(II) ions from aqueous media Polym. Bull. (IF 2.014) Pub Date : 2021-01-13 Asif Ayub, Ayesha Irfan, Zulfiqar Ali Raza, Mazhar Abbas, Ali Muhammad, Khalil Ahmad, Alisha Munwar
A chitosan-based composite named poly(1-vinylimidazole)-chitosan (PVI-CS) was fabricated employing a microwave-assisted protocol to be used as a novel composite for CdII contaminated water. The prepared PVI-CS composite was evaluated using SEM-coupled EDX, FTIR and zeta potential analyses. Under certain experimental conditions of the batch process, the binding behavior of PVI-CS sorbent against CdII
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Stimuli-responsive polymersomes of poly [2-(dimethylamino) ethyl methacrylate]- b -polystyrene Polym. Bull. (IF 2.014) Pub Date : 2021-01-12 Valdomiro V. de Souza, Gustavo P. B. Carretero, Phelipe A. M. Vitale, Íris Todeschini, Paloma O. Kotani, Greice K. V. Saraiva, Cristiane R. Guzzo, Hernan Chaimovich, Fabio H. Florenzano, Iolanda M. Cuccovia
Amphiphilic diblock copolymers may assemble in aqueous solutions to form vesicles delimited by a polymeric double layer, also known as polymersomes, considered a more robust option to liposomes. Diblock copolymers may respond to pH, temperature, and other conditions. Because of such properties, polymersomes are currently being studied as drug delivery systems or as nanoreactors. pH-responsive polymersomes
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Correction to: A novel double‑layered polymeric nanofiber‑based dressing with controlled drug delivery for pain management in burn wounds Polym. Bull. (IF 2.014) Pub Date : 2021-01-11 Sharjeel Abid, Tanveer Hussain, Ahsan Nazir, Abdul Zahir, Nabyl Khenoussi
The original version of this article inadvertently contained mistake.
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Copolymerization of butyl acrylate with methyl methacrylate in a bubble column reactor and the use of copolymer in corrosion protection Polym. Bull. (IF 2.014) Pub Date : 2021-01-09 Simona Popa, Giannin Mosoarca, Lavinia Macarie, Nicoleta Plesu, Gheorghe Ilia, Milica Tara-Lunga-Mihali
In this paper, copolymerization of methyl methacrylate (MMA) with n-butyl acrylate (BA) in a bubble column reactor using benzoyl peroxide as free radical initiator, at a temperature over 85 °C, is presented. This mode of copolymerization keeps an inert atmosphere throughout the entire reaction and contributes to proper mixing of the monomers. Higher pressure of the bubbling ensures the faster contact
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Preparation of a novel polyurethane network based on PPG–PGN–PPG: investigation of the effect of plasticizers on its properties Polym. Bull. (IF 2.014) Pub Date : 2021-01-07 Tayebe Khanlari, Yadollah Bayat, Mohammad Bayat
In this research to improve the thermal and mechanical properties of polyglycidyl nitrate (PGN)-based energetic polyurethane network was used a novel flexible chain triblock copolymer based on polypropylene glycol–poly glycidyl nitrate–polypropylene glycol (PPG–PGN–PPG). Energetic polyurethane was prepared by curing of the triblock copolymer with different curing agents (TDI, IPDI, N100, IPDI/N100)
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Radiation cross-linked gelatin/sodium alginate/carboxymethylcellulose sodium hydrogel for the application as debridement glue paste Polym. Bull. (IF 2.014) Pub Date : 2021-01-07 Yana Song, Lin Xu, Ling Xu, Li Deng
Autolytic debridement can accelerate wound healing by removing necrotic tissue. A hydrogel was fabricated from an aqueous solution of gelatin, sodium alginate and carboxymethylcellulose sodium by radiation-induced cross-linking at room temperature, which was aiming at the application of debridement glue paste. The swelling ratio of the debridement glue paste is 30 times to its dry weight, when the
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Condensed tannin resins extracted from Pinus radiata bark as a support matrix in carbon nanofiber-reinforced polymers Polym. Bull. (IF 2.014) Pub Date : 2021-01-07 A. F. Jaramillo, J. C. Martinez, P. Flores, C. Medina, D. Rojas, A. Díaz-Gómez, C. Fuentealba, M. F. Meléndrez
Condensed tannins extracted from the Pinus radiata bark (PRTs) were used as a replacement for phenol in the synthesis of resol-type phenolic resins (FRs) and tested as polymer matrix in carbon nanofiber (CNF)-reinforced composite materials. The PRTs used herein contained a phenol and lignin content of 31 (Eq/L) and 35 (%w/w), respectively. The molecular weights of these polyphenols indicated the presence
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Investigation on tribo-characteristics of Calotropis gigantea fiber-reinforced-CNT modified polymer composites Polym. Bull. (IF 2.014) Pub Date : 2021-01-05 Umesh K. Dwivedi, Shikha Singh, Satish Chandra Shukla, S. A. R. Hashmi
This study included the preparation and tribo-characterization of Calotropis gigantea (CG) fiber reinforced CNT modified phenolic resin composites. Composites were prepared with varying contents (0.25, 0.5, 1 and 2 wt%) of multi-walled carbon nanotube (MWCNT) in phenolic resin, which was reinforced with CG fiber. The prepared composites were tested for their adhesive wear and frictional behavior at
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Design, synthesis and antimicrobial properties of cellulose-based amine film Polym. Bull. (IF 2.014) Pub Date : 2021-01-04 Othman Hamed, Rafat Radad, Shehdeh Jodeh, Abdalhadi Deghles, Hisham Qrareya, Omar Dagdag, Khalil Azzaoui, Rana AL-Kerm, Rola Al-Kerm, Ghaleb Adwan
Film directing toward applications in food packaging and counter top coating with ability of inhibiting antimicrobial growth is important for maintaining food freshness and reducing bacteria transmittance. In this work, cellulose-based fatty amine with antimicrobial functionality covalently attached to cellulose backbone was synthesized. The synthesis was performed in a three-step process that involves
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Preparation and characterisation of chitosan extracted from shrimp shell ( Penaeus monodon) and chitosan-based blended solid polymer electrolyte for lithium-ion batteries Polym. Bull. (IF 2.014) Pub Date : 2021-01-04 M. Leo Edward, K. C. Dharanibalaji, K. Thileep Kumar, A. Raghu Subash Chandrabose, A. M. Shanmugharaj, V. Jaisankar
A bioactive and non-toxic biopolymer-based electrolyte has gained attention in recent research for their potential applications in the fabrication of electrochemical devices. In this work, we extracted the chitosan successfully prepared from shrimp shells using Brine’s method. The solid polymer electrolyte comprising the blend of chitosan and agar–agar, plasticised with polyethylene glycol (PEG), as
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Fabrication of hesperidin self-micro-emulsifying nutraceutical delivery system embedded in sodium alginate beads to elicit gastric stability Polym. Bull. (IF 2.014) Pub Date : 2021-01-04 Pankaj V. Dangre, Poorva P. Dusad, Alok D. Singh, Sanjay J. Surana, Kaushalendra K. Chaturvedi, Shailesh S. Chalikwar
Poor bioavailability of hesperidin (HES) due to its gastric instability and low aqueous solubility limits its clinical application. The objective of presented work was to incorporate self-microemulsifying drug delivery system of HES (SMEDDS-HES) into alginate beads. The alginate beads were characterized for their size and morphology by using motic microscopy and scanning electron microscopy. The selected
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Designing chitosan nanoparticles embedded into graphene oxide as a drug delivery system Polym. Bull. (IF 2.014) Pub Date : 2021-01-03 Seyede Mahtab Hosseini, Saeedeh Mazinani, Majid Abdouss, Hossein Kalhor, Katayoon Kalantari, Iraj Sadegh Amiri, Zeinab Ramezani
We investigated a novel drug delivery system comprising nanoparticles based on chitosan/graphene oxide (GO)/folic acid for targeted delivery of chemotherapeutic drugs. In this research, GO is accompanied with chitosan as natural cationic polysaccharide to increase compatibility. First, GO was synthesized, then chitosan was grafted to it by chemical interaction, and then chitosan nanoparticle and GO
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The effect of Ag nanoparticles in Ag/polyvinyl alcohol nanofiber composites Polym. Bull. (IF 2.014) Pub Date : 2021-01-03 Sunaryono Sunaryono, Aulia Rachmawati, Chusnana Insjaf Yogihati, Hendra Susanto, Ahmad Taufiq, Nandang Mufti
Ag nanoparticles (AgNPs) and Ag/polyvinyl alcohol (PVA) nanofiber composites were synthesized via chemical reduction and electrospinning methods, respectively. The filler mass of AgNPs in the Ag/PVA nanofiber composites was varied from 0.025 to 0.125 g. X-ray diffraction (XRD) analysis was used to determine the structure, crystal size, and lattice parameter of powdered AgNPs. Fourier transform infrared
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Effect of the accelerated aging on bio-jet fuel and contacted elastomer Polym. Bull. (IF 2.014) Pub Date : 2021-01-03 Saetbyeol Kang
In this study, changes in the characteristics of O-rings and a blended fuel (ADD-BJF) consisting of bio-jet fuel and petroleum-based jet fuel (Jet A-1) were analyzed. Nitrile butadiene rubber (NBR) and fluorocarbon rubber (FKM-1, 2) were used as the experimental O-rings. For all experimental O-rings, at the beginning of storage after contact with ADD-BJF the compression set value tended to increase
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Fabrication of asymmetric cellulose acetate/pluronic F-127 forward osmosis membrane: minimization of internal concentration polarization via control thickness and porosity Polym. Bull. (IF 2.014) Pub Date : 2021-01-03 Javad Baniasadi, Soheil Zarghami, Fariba Sadat Kamelian, Toraj Mohammadi, Reza Nikbakht
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Newly isolated sporopollenin microcages from Cedrus libani and Pinus nigra as carrier for Oxaliplatin; xCELLigence RTCA-based release assay Polym. Bull. (IF 2.014) Pub Date : 2021-01-03 Muhammad Mujtaba, Bahar Akyuz Yilmaz, Demet Cansaran-Duman, Lalehan Akyuz, Sevcan Yangın, Murat Kaya, Talip Çeter, Khalid Mahmood Khawar
Sporopollenin-mediated control drug delivery has been studied extensively owing to its desirable physicochemical and biological properties. Herein, sporopollenin was successfully extracted from C. libani and P. nigra pollens followed by loading of a commonly known anticancer drug Oxaliplatin. Drug loading and physicochemical features were confirmed by using light microscopy, FT-IR, SEM and TGA. For
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Synthesis and characterization of novel sulfonated poly(arylene ether phosphine oxide) with diphenyl ether moieties as proton exchange membranes Polym. Bull. (IF 2.014) Pub Date : 2021-01-02 Chen Lu, Songli Mao, Liqin Kang, Huiying Liao, Huiping Liu
A series of novel sulfonated poly(arylene ether phosphine oxide)s containing diphenyl ether (sPEPO) with various sulfonation degrees were synthesized using direct polycondensation. The transparent, tough and flexible membranes could be obtained by casting. The macroscopic properties and microstructure of the obtained membranes were studied in detail. The results showed that these sPEPO membranes with
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Effectiveness of cryogenic treatment on PBT composites: prediction of interfacial interaction parameter and its influence on filler bonding and wear performance Polym. Bull. (IF 2.014) Pub Date : 2021-01-02 Kavita A. Deshmukh, Swamini Chopra, Pranjali Khajanji, Abhay Deshmukh, D. R. Peshwe
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Fabrication of tight GO/PVDF hollow fiber membranes with improved permeability for efficient fractionation of dyes and salts in textile wastewater Polym. Bull. (IF 2.014) Pub Date : 2021-01-02 Chuanfeng Wang, Yingbo Chen, Kang Yang, Xiaoyu Hu, Yufeng Zhang
In this study, a graphene oxide/polyvinylidene fluoride (GO/PVDF) tight hollow fiber membrane (HFM) with improved permeability was fabricated via one-step direct spinning process to fractionate the dyes and salts (NaCl and Na2SO4) in textile wastewater. Scanning electron microscopy (SEM) indicated that the GO/PVDF HFM possessed a smooth and tight outer selective layer and a relatively porous and loose
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High-performance gum rosin-modified hyperbranched vinyl ester resin derived from multifunctional pentaerythritol Polym. Bull. (IF 2.014) Pub Date : 2021-01-02 Shipra Jaswal, Tamanna Thakur, Bharti Gaur, A. S. Singha
In this article, gum rosin-based hyperbranched vinyl ester resin (VPEMPAE) was synthesized from maleic anhydride-modified gum rosin adduct (MPA). This adduct (MPA) was reacted with pentaerythritol to obtain esterified adduct (PEMPA). The PEMPA adduct was epoxidized using epichlorohydrin and KOH as a catalyst to give epoxy resin (PEMPAE). The epoxide rings were then reacted with methacrylic acid to
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Synthesis of the superabsobents enriched in chitosan derivatives with excellent water absorption properties Polym. Bull. (IF 2.014) Pub Date : 2021-01-02 Andrey Sorokin, Maria Lavlinskaya
The superabsorbent polymers (SAPs) containing up to 30% w of N-succinylchitosan and N-maleoylchitosan were successfully synthesized by free radical polymerization in an aqueous solution. The structures and surfaces of the synthesized SAPs were characterized by FTIR and SEM, respectively. The influence of the parameters such as type and content of polysaccharide, cross-linker, and comonomer mixture
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Atomization combined with high-temperature sputtering method applied in latex compounding technology for preparation of natural rubber latex/silica composites Polym. Bull. (IF 2.014) Pub Date : 2021-01-02 Huiguang Bian, Tianhao Chang, Chuansheng Wang, Donglin Zhu, Donghui Ren, Xiao Yao, Zhuang Tao
This study aimed to improve the performance of a masterbatches by improving the latex compounding process. Four types of methods for preparation of natural rubber latex/silica composites are performed. In particular, atomization combined with high-temperature sputtering (A-HTS) method which is developed to optimize filler dispersion of latex compounding technology is conducted to dry the masterbatches
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Influence of lignite fly ash on the structural and mechanical properties of banana fiber containing epoxy polymer matrix composite Polym. Bull. (IF 2.014) Pub Date : 2021-01-01 G. K. Sathishkumar, G. Gautham, G. Gowri Shankar, G. Rajkumar, R. Karpagam, V. Dhivya, George Zacharia, B. Gopinath, P. Karthik, M. Martin Charles
The present work deals with the influence of lignite fly ash (LFA) on the physical properties of polymer matrix composite (PMC). The study was conducted on different compositions of PMC which were prepared using epoxy polymer (EP) amalgamated with LFA and banana fiber (BF) by hand layup process. The different compositions were prepared in the combination of (80-x)EP-20BF-xLFA (where x = 0, 2.5, 5,
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Formulation, optimization, and in vitro characterization of omega-3-rich binary lipid carriers for curcumin delivery: in vitro evaluation of sustained release and its potential antioxidant behavior Polym. Bull. (IF 2.014) Pub Date : 2021-01-01 Swathi Ganna, RajasekharaReddy Gutturu, Deva PrasadRaju Borelli, Kummara Madhusudana Rao, Koduru Mallikarjuna, John Sushma Nannepaga
Curcumin is a natural polyphenol obtained from Curcuma longa which has gained much attention in medical and scientific fields and is known for its wide range of therapeutic applications. But the natural herb mixtures with high subatomic sizes have low retention limits which does not permit the restorative medication to cross the lipid membranes, subsequently bringing about low bioavailability with
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Main structural and mechanical properties of electrospun PAN-based carbon nanofibers as a function of carbonization maximum temperature Polym. Bull. (IF 2.014) Pub Date : 2021-01-01 Mahdi Valinejad Qanati, Ali Rasooli, Mohammad Rezvani
In this study, PAN-based carbon nanofibers (CNFs) were synthesized via electrospinning followed by stabilizing and carbonization. The carbonization process was performed by heating the fibrous mats up to a maximum temperature in the region of 800–1600 °C. The effect of carbonization maximal temperature on the structure and tensile strength of carbon nanofiber mats was investigated via SEM, elemental
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Swelling behaviour, rheological property and drug release profile of the anti-inflammatory drug metamizole sodium from xanthan gum–ZnO nanoparticles Polym. Bull. (IF 2.014) Pub Date : 2021-01-01 Selcan Karakus, Ezgi Tan, Merve Ilgar, Yeşim Müge Sahin, Demet Sezgin Mansuroglu, Deniz Ismik, Razium Ali Somroo, Ayben Kilislioglu
In this study, our aim was to determine the effect of the polymer matrix on the drug delivery system; active-drug-loaded xanthan-gum (XaG)-based ZnO nanoparticles were synthesized under the ultrasonic irritation method. We characterized the structure using UV–Vis, SEM–EDX, FTIR and XRD techniques. The morphology of the nanoparticles has been carried out using SEM, and the results revealed that hexagonal
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Preparation and characterization of polythiophene/graphene oxide/epoxy nanocomposite coatings with advanced properties Polym. Bull. (IF 2.014) Pub Date : 2021-01-01 Mehrdad Bahrani, Mehdi Sharif, Katayoun Amirazodi
In this paper, polythiophene–graphene oxide (PTh–GO) hybrids-filled epoxy (0–2 wt%) coatings with enhanced mechanical and anti-corrosion properties applied as an advanced coating. The chemical structure, morphology, toughness, adhesion to the substrate and anticorrosive properties of these coatings were studied. FTIR analysis and morphological investigations (XRD, SEM and TEM) confirmed that PTh synthesized
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Correction to: Development of waterborne polyurethane dispersions (WPUDs) from novel cardanol‑based reactive dispersing agent Polym. Bull. (IF 2.014) Pub Date : 2020-12-21 Siddhesh U. Mestry, Sonam P. Khuntia, S. T. Mhaske
The authors declare that for any communication of this article, the corresponding author should be considered as Prof. (Dr.) S. T. Mhaske (stmhaske@gmail.com).
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Correction to: Statistical strength of a self‑bonded incompatible polymer–polymer interface Polym. Bull. (IF 2.014) Pub Date : 2020-12-09 Yuri M. Boiko
This erratum corrects the reference 45 and updates the reference 37 of the published paper. Full details of the reference 37 became available simultaneously with reviewing the proofs while the initials of three co-authors Zakrevskii, Pakhotin, and Sudar in the reference 45 were wrongly combined in one word VAVANT.
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Molecular brushes based on copolymers of alkoxy oligo(ethylene glycol) methacrylates and dodecyl(meth)acrylate: features of synthesis by conventional free radical polymerization Polym. Bull. (IF 2.014) Pub Date : 2020-10-10 Dmitry V. Orekhov, Denis M. Kamorin, Alexander S. Simagin, Ildar R. Arifullin, Oleg A. Kazantsev, Alexey P. Sivokhin, Maria V. Savinova
Amphiphilic copolymer molecular brushes of three different types with side chains consisting of alkyl and oligo(ethylene glycol) blocks based on higher alkoxy oligo(ethylene glycol) methacrylates (HAOEGM), methoxy oligo(ethylene glycol) methacrylates (MOEGM) and dodecyl(meth)acrylate have been successfully synthesized via conventional radical polymerization in toluene. In case of the copolymerization
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Mechanical, thermal and morphological properties of thermoplastic polyurethane composite reinforced by multi-walled carbon nanotube and titanium dioxide hybrid fillers Polym. Bull. (IF 2.014) Pub Date : 2020-10-10 Abreeza Manap, Savisha Mahalingam, Rajeswaran Vaithylingam, Huda Abdullah
A suitable material for wind turbine blades has promoted great interest in carbon-based thermoplastic polyurethane (TPU) composites as they are flexible, lightweight, and mechanically robust. However, these carbon-based fillers deteriorate the thermal and mechanical properties in the long run due to the high agglomeration of the nanoparticles. In addition to that, these fillers also increase the production
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Preparation of SBA-15 surface lanthanum ion-imprinted polymer and its adsorption properties Polym. Bull. (IF 2.014) Pub Date : 2020-10-09 Longlong Yue, Qian Xie, Yifeng Yang, Jing Li, Xiancai Li
The preparation of a lanthanum ion-imprinted polymer is described via surface ion imprinting, with polyethyleneimine as the functional monomer and SBA-15 as the matrix material. Its structure was characterized and analyzed, and static adsorption experiments were carried out to determine the best experimental conditions for the adsorption of lanthanum ions. The effects of initial concentration, temperature
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Hydrogel sensors with pH sensitivity Polym. Bull. (IF 2.014) Pub Date : 2020-10-09 Chayapol Rungsima, Netipong Boonyan, Marhsilin Klorvan, Boonsri Kusuktham
The pH-sensitive smart hydrogel sensor was studied. The hydrogel was prepared from polymerization reaction between the 2-hydroxyethyl methacrylate and diallyldimethyammonium chloride using potassium persulfate as an initiator, N, N′-methylenebisacrylamide as a cross-linker and N, N, N′, N′-tetramethylethylenediamine as an accelerator. Bromothymol blue was added to the polymerization system to produce
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Impedance analysis of charge transfer upon nickel doping in Tio 2 -based flexible dye-sensitized solar cell Polym. Bull. (IF 2.014) Pub Date : 2020-10-09 H. Abdullah, Savisha Mahalingam, Kang Jian Xian, Abreeza Manap, Mohd Hafiz Dzarfan Othman, Md Akhtaruzzaman
Flexible dye-sensitized solar cells (FDSSCs) have promoted interest in plastic industries as they are lightweight, flexible, and mechanically robust to accelerate production and reduce cost. However, the plastic substrates have temperature limitations in producing the TiO2 photoanode and degrade the performance of FDSSC. The main reason for this degradation is the low charge transfer in the photoanode
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Optimization of gallic acid encapsulation in calcium alginate microbeads using Box-Behnken Experimental Design Polym. Bull. (IF 2.014) Pub Date : 2020-10-09 Kamal Essifi, Mohammed Lakrat, Doha Berraaouan, Marie-Laure Fauconnier, Ali El Bachiri, Abdesselam Tahani
The aim of this study was the optimization of the gallic acid (GA) encapsulation efficiency within calcium alginate microparticles by the ionotropic gelation technique, using Box-Behnken design for the surface methodology response. For this purpose, three independent variables were selected: sodium alginate concentration (X1), calcium chloride concentration (X2), and gallic acid concentrations (X3)
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High protection performance of vanadium pentoxide-embedded polyfuran/epoxy coatings on mild steel Polym. Bull. (IF 2.014) Pub Date : 2020-10-08 Joseph Raj Xavier
V2O5-incorporated polyfuran (PF) as nanofiller(V2O5-PF) was used to synthesize epoxy (EP)-PF/V2O5 nanocomposites. The PF-functionalized V2O5 nanoparticles were characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The corrosion protection performance of these coatings on mild steel in natural
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Evaluation of halogen chain-end functionality in 2-bromo-2-methylpropanoate esters of poly(oxyalkylene) polymers by MALDI-TOF spectroscopy Polym. Bull. (IF 2.014) Pub Date : 2020-10-07 Angélica Velázquez, Daniel Grande, Luis Ernesto Elizalde
Esters of 2-bromo-2-methylpropanoate of poly(oxyalkylene) polymers such as poly(ethylene glycol) or α-methyl poly(ethylene glycol) were prepared in high yields and characterized by spectroscopic and chromatographic methods (NMR, FT-IR, mass spectroscopy and SEC). The halogen chain-end group in the poly(oxyalkylene) bromine-terminated esters was characterized by MALDI-TOF MS. The effect of the solvents
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Properties of polyethylcyanoacrylate/modified Mt composites with highly exfoliated montmorillonite Polym. Bull. (IF 2.014) Pub Date : 2020-10-07 Mohamed Fekry, Azza M. Mazrouaa, Manal G. Mohamed, Dalia E. Abulyazied
The surface mineral modification of montmorillonite (Mt) layers was carried out by removing some of the exchangeable cations and anions (salts) using dimethylformamide as a chelating agent. The rest unremoved exchangeable cations were balanced by the permanent negative charges in the Mt layers. The modified Mt layers were characterized by X-ray fluorescence, high-resolution scanning electron microscopy
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Effect of maleic anhydride and oxygen functionalized carbon nanotube on polyamide 6 and polypropylene blend properties Polym. Bull. (IF 2.014) Pub Date : 2020-10-07 Janara A. Rocha, Teresa T. Steffen, Luis C. Fontana, Daniela Becker
This work aims to investigate how adding functionalized carbon nanotubes (CNTs) to a Polyamide 6/polypropylene blend influences its properties. CNT functionalization was carried on through plasma with oxygen (CNT_O2) or maleic anhydride (CNT_MA). CNT_O2 presented the highest amount of oxygen, but, as the treatment time in plasma was twice as long as that of the CNT_MA sample, the oxygenated groups
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Probing the electrical and dielectric properties of polyaniline multi-walled carbon nanotubes nanocomposites doped in different protonic acids Polym. Bull. (IF 2.014) Pub Date : 2020-10-07 Sharon J. Paul, Bipin Kumar Gupta, Prakash Chandra
Polymer nanocomposites with vital reinforcements of conductive fillers have evinced as next-generation high-performance materials with multi-functional applications. Herein, we report the facile synthesis of thermally stable, highly electrically conducting polyaniline multi-walled carbon nanotubes (PANI/MWCNT) nanocomposites doped in two different protonic acids, i.e. hydrochloric acid (HCl) and sulphuric
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Effect of the multi-functional epoxides on the thermal, mechanical and rheological properties of poly(butylene adipate-co-terephthalate)/polylactide blends Polym. Bull. (IF 2.014) Pub Date : 2020-10-06 D. D. Wu, Y. Guo, A. P. Huang, R. W. Xu, P. Liu
The growing interest for biodegradable products promoted the development of new materials. In this work, three types of multi-functional epoxides of Joncryl ADR4368, ADR4380 and ADR4370 were used to study the effect of Joncryl types on the morphology, mechanical, thermal and rheological properties of poly(butylene adipate-co-terephthalate)/poly(lactide) (PBAT/PLA) blends. According to the structure
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Pumice particle interface: a case study for immunoglobulin G purification Polym. Bull. (IF 2.014) Pub Date : 2020-10-06 İhsan Alacabey, Ömür Acet, Burcu Önal, Emrah Dikici, Veyis Karakoç, Fatma Gürbüz, Hüseyin Alkan, Mehmet Odabaşı
Cryogels with embedded natural adsorbent are new trend of chromatographic media for separation of biomolecules. In this report, experimental determination of immunoglobulin G (IgG) purification by Cu2+-attached pumice particles unified cryogel (Cu2+-PPUC) was performed. For this purpose, after preparation of Cu2+-attached pumice particles, they were unified with 2-hydroxyethyl methacrylate monomers
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Simply preparation of self-poled PVDF/nanoceria nanocomposite through one-step formation approach Polym. Bull. (IF 2.014) Pub Date : 2020-10-06 Ayman S. Elmezayyen, Jianming Zheng, Chunye Xu
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In vitro release study of ketoprofen-loaded chitosan/polyaniline nanofibers Polym. Bull. (IF 2.014) Pub Date : 2020-10-06 Islam M. Minisy, Nehal A. Salahuddin, Mohamad M. Ayad
Chitosan/polyaniline nanofibers (CH/PANI) were prepared by an in situ oxidative polymerization of aniline in the presence of CH solution. An attractive development of nanofibers network provides free volume space for the easy encapsulation of drugs in the three-dimensional network structure. The CH/PANI hybrid was characterized by using Fourier transform infrared spectroscopy, scanning electron microscopy
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Determining long-lived photo-excited species in thin-film anthracene derivatives using quasi-continuous wavelength photo-induced absorption Polym. Bull. (IF 2.014) Pub Date : 2020-10-06 Murat Aydemir
Long-lived excited states dynamics of sky-blue emitting 9,10-bis [9-hexyl-6-((E)-styryl)-9H-carbazol-3-yl] anthracene derivatives have been investigated by means of time-correlated single photon counting and quasi-continuous wavelength photo-induced absorption (QCW-PIA) spectroscopies. The QCW-PIA is a versatile tool to investigate the long-lived photo-excited species with lifetimes ranging from microsecond
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Influence of different viscosity grade Methocel and Ethocel polymers for the development of controlled release dimenhydrinate matrix tablets Polym. Bull. (IF 2.014) Pub Date : 2020-10-06 Zeb-un-Nisa, Muhammad Harris Shoaib, Rabia Ismail Yousuf, Syed Imran Ali, Zafar Alam Mahmood, Sabahat Jabeen, Faaiza Qazi
Dimenhydrinate is a therapeutic agent used for the treatment of nausea and vomiting. A conventional dose of dimenhydrinate is 50 mg per 8 h. Once-daily controlled release tablets of dimenhydrinate were formulated intended to treat emesis. The tablets were formulated using hydrophilic polymers Methocel® and hydrophobic polymers Ethocel® and subsequently analyzed for pre-compression and post-compression
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Effect of the uniaxial orientation on the polymer/filler nanocomposites using phosphonate-modified single-walled carbon nanotube with hydro- or fluorocarbons Polym. Bull. (IF 2.014) Pub Date : 2020-10-04 Takuto Hayasaki, Yoshinori Abiko, Ahmed A. Almarasy, Shuichi Akasaka, Atsuhiro Fujimori
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Microfluidic-assisted production of poly(ɛ-caprolactone) and cellulose acetate nanoparticles: effects of polymers, surfactants, and flow rate ratios Polym. Bull. (IF 2.014) Pub Date : 2020-10-03 Atefe Sadeghi Lari, Alireza Khatibi, Payam Zahedi, Hedayatollah Ghourchian
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The role of the arylidene linkage on the antimicrobial enhancement of new tert-butylcyclohexanone-based polyketones Polym. Bull. (IF 2.014) Pub Date : 2020-10-03 Samar J. Almehmadi, Khalid A. Alamry, M. A. Elfaky, Abdullah M. Asiri, Mostafa A. Hussien, S. Z. Al-Sheheri, Mahmoud A. Hussein
Six promising biologically active polymers based on a 4-tert-butylcyclohexanone moiety have been synthesized through the Friedel–Crafts reaction as new polyketone derivatives. The polymerization occurred by the interaction of three different arylidene-based monomers, with adipoyl and sebacoyl diacid chlorides. The role of such arylidene linkages on the overall performance of these new polyketones was
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Effect of carbonaceous nanofillers and triblock copolymers on the toughness of epoxy resin Polym. Bull. (IF 2.014) Pub Date : 2020-10-03 Alessandra Lavoratti, Ademir José Zattera, Sandro Campos Amico
The toughening of epoxy resins is a relatively recent trend in composite technology. The use of rigid carbonaceous fillers or plasticizing additives is well established in the literature, but their combined use and their effect on thermal or mechanical properties of composites is hardly studied. The aim of this work is to investigate the combination of neat and silane-treated carbonaceous fillers (graphene
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Enhancement of electrical properties of metal doped polyaniline synthesized by different doping techniques Polym. Bull. (IF 2.014) Pub Date : 2020-10-03 Md. Mostafizur Rahman, Tanvir Mahtab, M. Zobayer Bin Mukhlish, M. O. Faruk, Mohammed Mastabur Rahman
Metal doped polyaniline (PANI) was synthesized following chemical oxidative polymerization method in acidic medium followed by two different doping techniques i.e. doping during polymerization and doping after polymerization of aniline. Three dopant materials ZnCl2, MgCl2, and CuCl2 were used in this synthesis. In first case, metal salts with various compositions were added with aniline and the polymerization
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Synthesis, characterization and applications of poly(vinyl chloride) nanocomposites loaded with metal oxide nanoparticles Polym. Bull. (IF 2.014) Pub Date : 2020-10-03 E. M. Sadek, N. A. Mansour, S. M. Ahmed, S. L. Abd-El-Messieh, D. El-Komy
Metal oxide (i.e., Fe2O3, ZnO and TiO2) nanoparticles (NPs) have been prepared and investigated by various techniques with the objective of synthesis of nanocomposites thin films based on poly(vinyl chloride) (PVC) as a matrix. Different loadings of metal oxide NPs (i.e., 2.0, 5.0, 10.0 and 15.0 wt%) were incorporated in PVC followed by solution casting. The prepared film samples were characterized
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Recent developments in membrane technology for the elimination of ammonia from wastewater: A review Polym. Bull. (IF 2.014) Pub Date : 2020-10-01 P. Moradihamedani
This review article presents an extensive study on ammonia elimination from wastewater through membrane separation technology. The mechanism, performance and morphology of different types of membranes that have been employed for ammonia removal from wastewater such as hollow fiber membrane contactor, membrane distillation contactor and flat sheet membranes including blend, and mixed matrix membranes
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