New efficient tetraphenyl silylated poly(azomethine)s based on “pincer-like” bis(imino)pyridine Iron(III) complexes as heterogeneous catalysts for CO2 conversion
Publication date: Available online 15 February 2020Source: European Polymer JournalAuthor(s): Patricio A. Sobarzo, Claudio A. Terraza, Eva M. MayaAbstractAromatic poly(azomethine)s containing simultaneously for the first time both tetraphenyl silane moeties and “pincers” of bis(imino)pyridine were prepared, to provide these polymers with a robust structure and ability to anchor metals. The polymers were prepared from difunctional monomers which provide an special conformation yielding moderate surface areas (up to 60 m2/g). The insolubility and further incorporation of iron to these polymers have generated a ne...
Source: European Polymer Journal - February 15, 2020 Category: Chemistry Source Type: research

Recent Advances on Pyrene-Based Photoinitiators of Polymerization
Publication date: Available online 13 February 2020Source: European Polymer JournalAuthor(s): Frédéric DumurAbstractPhotoinitiators of polymerization activable under low light intensity and in the visible range are actively researched by both the academic and industrial communities. To efficiently harvest light and initiate a polymerization process, polyaromatic structures are ideal candidates. In this field, pyrene can be cited as a relevant example. Over the years, a wide range of Type I and Type II photoinitiators have been developed, ranging from push-pull dyes to polyaromatic structures, ferrocenium, ket...
Source: European Polymer Journal - February 14, 2020 Category: Chemistry Source Type: research

Multi-benzocyclobutene functionalized siloxane monomers prepared by Piers-Rubinsztajn reaction for low-k materials
Publication date: Available online 14 February 2020Source: European Polymer JournalAuthor(s): Junyi Li, Ziyu Zhang, Tangwei Zhu, Zhuo Li, Jun Wang, Yuanrong ChengAbstractTwo new multiarmed siloxane monomers of tri-benzocyclobutene monomer namely TriBS and tetra-benzocyclobutene monomer namely TetraBS have been successfully synthesized by Piers-Rubinsztajn (P-R) reaction. After cured at relevant temperature (>200 °C), the monomers converted to transparent highly-crosslinked bulk thermosets. TGA data showed that the crosslinked thermosets exhibited good thermostability with 5% weight loss temperature (Td5) at 451 °...
Source: European Polymer Journal - February 14, 2020 Category: Chemistry Source Type: research

The microstructure regulation, strengthening, toughening and hydrophilicity of polyamide6 in fabricating poly (vinylidene fluoride)-based flat membrane via the thermally induced phase separation technique
Publication date: Available online 14 February 2020Source: European Polymer JournalAuthor(s): Shang Xiang, Zhenghua Guo, Yuelin Wang, Haihui Liu, Jing Zhang, Zhenyu Cui, Hong Wang, Jianxin LiAbstractThe poly (vinylidene fluoride) (PVDF)/polyamide6 (PA6) flat blend membrane was prepared via thermally induced phase separation (TIPS) process using water-soluble diluent mixture. The function of PA6 to induce the non-solvent induced phase separation (NIPS) was disclosed for the first time and the membrane formation mechanism about S-L phase separation of TIPS by combining the pore-forming effect of PA6 and restricting PVDF crys...
Source: European Polymer Journal - February 14, 2020 Category: Chemistry Source Type: research

Synthesis of High Molecular Weight Poly(n-Butyl Acrylate) Macromolecules via seATRP: From Polymer Stars to Molecular Bottlebrushes
Publication date: Available online 12 February 2020Source: European Polymer JournalAuthor(s): Izabela Zaborniak, Paweł Chmielarz, Michael R. Martinez, Karol Wolski, Zongyu Wang, Krzysztof MatyjaszewskiAbstractPoly(n-butyl acrylate) (PBA) branched polymers have interesting properties and potential applications as super soft materials and pressure sensitive adhesives. Herein, star and comb polymers with long PBA sidechains were synthesized by a simplified electrochemically-mediated ATRP (seATRP) utilizing ca. 100 ppm of Cu catalyst. Grafting-from (or core-first) synthesis of PBA stars using a multifunctional sucrose initiat...
Source: European Polymer Journal - February 14, 2020 Category: Chemistry Source Type: research

Highly efficient solar steam generation of bilayered ultralight aerogels based on N-rich conjugated microporous polymers nanotubes
Publication date: Available online 12 February 2020Source: European Polymer JournalAuthor(s): Zhaoqi Zhu, Peng Mu, Yukang Fan, Wei Bai, Zheng Zhang, Hanxue Sun, Weidong Liang, An LiAbstractSolar steam generation is one of the most promising and efficient methods to solve freshwater shortage and to treat the wastewater over the world. However, the preparation of the solar steam generator with simple preparation process, controlled porous structure, high mechanical strength and energy conversion efficiency is still a challenge. Here, we report a bilayered heterocyclic conjugated microporous polymers aerogels based solar rece...
Source: European Polymer Journal - February 14, 2020 Category: Chemistry Source Type: research

Continuous flow photoinduced phenothiazine derivatives catalyzed atom transfer radical polymerization
Publication date: Available online 11 February 2020Source: European Polymer JournalAuthor(s): Weijun Huang, Jinglin Zhai, Xin Hu, Jindian Duan, Zheng Fang, Ning Zhu, Kai GuoAbstractContinuous flow photoinduced organocatalyzed atom transfer radical polymerizations (O-ATRP) are investigated by using phenothiazine derivatives as organic photoredox catalysts. A series of phenothiazine derivatives with different substituents are designed and synthesized. The structure-reactivity relationship is examined in both batch and tubular reactor by employing methyl methacrylate (MMA) and ethyl α-bromophenylacetate (EBP) as the mon...
Source: European Polymer Journal - February 13, 2020 Category: Chemistry Source Type: research

Photoinduced properties of “T-type” polyimides with azobenzene or azopyridine moieties
Publication date: Available online 11 February 2020Source: European Polymer JournalAuthor(s): Karolina Bujak, Ion Sava, Iuliana Stoica, Vasile Tiron, Ionut Topala, Rafał Węgłowski, Ewa Schab-Balcerzak, Jolanta KonieczkowskaAbstractIn this work series of “T-type” polyimides with azobenzene or azopyridine moieties were investigated. It is the first report where the “T-type” polyimides with derivatives of azopyridine were investigated. The cis-trans isomerization in the dark in the solid-state was showed. Polyimides with azobenzene derivatives exhibited higher stability of cis-trans recovery than th...
Source: European Polymer Journal - February 13, 2020 Category: Chemistry Source Type: research

Editor’s note on “Molecular-level insight of gas transport in composite poly(4-methyl-2-pentyne) and nanoparticles of titanium dioxide” [Eur. Polym. J. 102 (2018) 82–89]
Publication date: 5 March 2020Source: European Polymer Journal, Volume 126Author(s): G.J. Vancso (Source: European Polymer Journal)
Source: European Polymer Journal - February 13, 2020 Category: Chemistry Source Type: research

Supramolecular block copolymers as novel UV and NIR responsive nanocarriers based on a photolabile coumarin unit
Publication date: Available online 11 February 2020Source: European Polymer JournalAuthor(s): Alejandro Roche, Emmanuel Terriac, Rosa M. Tejedor, Luis Oriol, Aránzazu del Campo, Milagros PiñolAbstractA new series of amphiphilic block copolymers has been prepared by ring opening polymerization (ROP) of cyclic carbonates using PEG as initiator. The light responsive unit [7–(diethylaminocoumarin)–4–yl]methyl ester has been introduced by a modular and versatile supramolecular approach, while a reference covalent copolymer has been synthesized for the shake of comparison. Synthesized copolymers s...
Source: European Polymer Journal - February 11, 2020 Category: Chemistry Source Type: research

Highly Electro-responsive Plasticized PVC/FMWCNTs Soft Composites: A Novel Flex Actuator with Functional Characteristics
Publication date: Available online 8 February 2020Source: European Polymer JournalAuthor(s): Imdad Ali, Yang Weimin, Li Xudong, Ahsan Ali, Jiao Zhiwei, Pengcheng Xie, Otavio Augusto Titton Dias, Muhammad Pervaiz, Li Haoyi, Mohini SainAbstractElectro-responsive devices are used in actuators and artificial muscles but susceptible low deformation limits its applications. Herein, we prepared soft composites from functional multi-wall carbon nanotubes (FMWCNTs) and plasticized polyvinyl chloride (PVC). The PVC/FMWCNTs soft composite assembled with double layer electrodes functioned as a highly flexible contraction actuator. Fur...
Source: European Polymer Journal - February 10, 2020 Category: Chemistry Source Type: research

Synthesis of Amphiphilic Star-shaped Block Copolymers through Photo-induced Metal Free Atom Transfer Radical Polymerization
Publication date: Available online 8 February 2020Source: European Polymer JournalAuthor(s): Xiuzhe Yin, Linan Wang, Xiaomeng Zhang, Haitao Zhao, Zhe Cui, Peng Fu, Minying Liu, Xinchang Pang, Xiaoguang QiaoAbstractPhoto-induced metal free ATRP method was employed for the synthesis of star-shaped polymers. By using 21-Br-β-CD as the macroinitiator, 10-phenylphenothiazine as the photoredox catalyst, star-shaped PtBA homopolymers were synthesized. The photo-induced ATRP displayed all the characteristics of controlled/living polymerization systems and the good light control over the polymerization process. The successful ...
Source: European Polymer Journal - February 10, 2020 Category: Chemistry Source Type: research

Remote and efficient infrared induced self-healable stretchable substrate for wearable electronics
Publication date: Available online 7 February 2020Source: European Polymer JournalAuthor(s): Han Jia, Shu-Ying GuAbstractFlexible and wearable electronics as candidates for the next-generation electric devices have attracted wide attention and been actively investigated recently. A remote, fast and efficient self-healable stretchable polyurethane nanocomposite for the substrate of flexible wearable electronics is reported in this paper. Carbon nanotubes (CNTs) were embedded in a self-healing polyurethane based on disulfide bonds. The tensile strength at break of the composites was improved significantly from 1.01 MPa to 3....
Source: European Polymer Journal - February 8, 2020 Category: Chemistry Source Type: research

Rhenium(I)-Tetrazolato Functional Luminescent Polymers: Organic-Inorganic Hybrids via RAFT and Post-Polymerization Modification
Publication date: Available online 8 February 2020Source: European Polymer JournalAuthor(s): Elena Dallerba, Massimiliano Massi, Andrew B. LoweAbstractA novel series of well-defined tetrazole (co)polymers based on the styrenic structural motif, that are able to serve as macromolecular ligands for the coordination of a luminescent Re(I) complex are presented. Copolymers of styrene with 4-cyanostyrene containing different ratios of cyano appended groups have been synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. Post-polymerization modification of the cyano groups via reaction with NaN3 ...
Source: European Polymer Journal - February 8, 2020 Category: Chemistry Source Type: research

Editorial Board
Publication date: 15 February 2020Source: European Polymer Journal, Volume 125Author(s): (Source: European Polymer Journal)
Source: European Polymer Journal - February 8, 2020 Category: Chemistry Source Type: research

Contents continued
Publication date: 15 February 2020Source: European Polymer Journal, Volume 125Author(s): (Source: European Polymer Journal)
Source: European Polymer Journal - February 8, 2020 Category: Chemistry Source Type: research

Graphical abstract TOC
Publication date: 15 February 2020Source: European Polymer Journal, Volume 125Author(s): (Source: European Polymer Journal)
Source: European Polymer Journal - February 8, 2020 Category: Chemistry Source Type: research

Recent Advances in Dendrimer-based Nanoplatform for Cancer Treatment: A Review
Publication date: Available online 6 February 2020Source: European Polymer JournalAuthor(s): Rushikesh S. Ambekar, Maya Choudhary, Balasubramanian KandasubramanianAbstractOut of the total deaths, 70% death occurs in middle and low-income countries due to cancer and according to world cancer report 2014, total annual economic cost of cancer in 2010 was approximately US$ 1.16 trillion therefore by reducing the cost with promising cancer treatment is needed to be develop in the near future. The present cancer treatment/therapy possesses relief but they also exert unwanted side effects on normal cells. The crucial step in canc...
Source: European Polymer Journal - February 7, 2020 Category: Chemistry Source Type: research

Self-healing Nanocomposites comprised of Poly(urea formaldehyde) Nanocapsules in a Thermosetting Polyurea
In this study, poly(urea formaldehyde) (PUF) nanocapsules with epoxy cores were blended into a polyurea matrix, formulated as poly[(phenyl isocyanate)-co-formaldehyde] (PMDI) (f = 3.4), and a diamine curing agent (VERSALINK 650) to form nanocomposites. The nanocomposites were then subjected to impact delamination tests at temperatures below −74 °C. Scanning electron microscopy was used to qualitatively inspect the nanocomposites before the impact (virgin), after the impact, and after self-healing. Dynamic mechanical analyzer measurements were carried out to characterize the mechanical properties of the nanocompos...
Source: European Polymer Journal - February 5, 2020 Category: Chemistry Source Type: research

Production and Analysis of Stable Microfluidic Devices with Tunable Surface Hydrophilicity via the in-Situ Tertiary-Amine Catalyzed Michael Addition of a Multifunctional Thiol to a Multifunctional Acrylate
Publication date: Available online 5 February 2020Source: European Polymer JournalAuthor(s): Jagannath Upadhyay, Christopher O. Bounds, Nicholas Totaro, Suman Thakuri, Leah Garber, Michael Vincent, Zhaoyang Huang, John A. PojmanAbstractPoly(dimethylsiloxane) (PDMS) is one of the dominant polymeric hydrophobic materials that has been widely used in microfluidic devices. Here, we employed amine-catalyzed thiol-acrylate chemistry with hydrophilic and fluorinated acrylates to produce a wide range of stable hydrophilic materials without use of expensive instrumentation or complicated techniques to activate surfaces. The process...
Source: European Polymer Journal - February 5, 2020 Category: Chemistry Source Type: research

Morphological, Chemical and Electrical Characterization of a Family of Commercial Nanofiltration Polyvinyl Alcohol Coated Polypiperazineamide Membranes
Publication date: Available online 3 February 2020Source: European Polymer JournalAuthor(s): A. Otero-Fernández, P. Díaz, J.A. Otero, R. Ibáñez, A. Maroto-Valiente, L. Palacio, P. Prádanos, F.J. Carmona, A. HernándezAbstractThree AFC membranes from PCI, of the thin film composite (TFC) nanofiltration type, have been characterized by using XPS, AFM, Contact angles, Zeta potential and permeation experiments. This plethora of complimentary methods portrays a deep and exhaustive description of these membranes that could be used to tune fabrication and modification of nanofiltration mem...
Source: European Polymer Journal - February 5, 2020 Category: Chemistry Source Type: research

Fabrication and Reversible Disulfide Functionalization of PEGylated Chitosan-Based Hydrogels: Platforms for Selective Immobilization and Release of Thiol-containing Molecules
In this study, we report on the fabrication of chitosan based hydrogel scaffolds incorporating reactive disulfide functionalities towards the reversible thiol immobilization and release endeavor. Native chitosan chemically modified with polyethylene glycol (PEG) groups was exploited in hydrogel synthesis together with an acryloyl group containing benzothiazole disulfide compound. The chemical crosslinking and incorporation of the reactive disulfide groups into the gel network was maintained by Michael addition of chitosan amino groups onto acrylic benzothiazole compound and bisacryloyl modified polyethylene glycol crosslin...
Source: European Polymer Journal - February 2, 2020 Category: Chemistry Source Type: research

Comprehensive study on the effects of total monomers' content and polymerization temperature control on the formation of the polymer-layer in preparation of insulin-imprinted magnetic nanoparticles
Publication date: Available online 1 February 2020Source: European Polymer JournalAuthor(s): Farnaz Goudarzi, Parisa HejaziAbstractThe potential of surface-modified magnetic nanoparticles was used as the support for molecular imprinting to separate insulin. The effects of the total monomers' content (at seven levels) and overall temperature (ambient, controlled at 23 and 28°C) during the formation of the surface polymer layer in aqueous media were for the first time explored via general factorial experimental design. Methacrylic acid (MAA) and acrylamide (AAm) were chosen as the functional monomers, and methylenebisacr...
Source: European Polymer Journal - February 1, 2020 Category: Chemistry Source Type: research

Structure-Tunable Assembly of Lignin Sub-Micro Spheres by Modifying the Amphiphilic Interfaces of Lignin via n-alkane
Publication date: Available online 30 January 2020Source: European Polymer JournalAuthor(s): Bingqi Li, Shengping You, Wei Qi, Yuefei Wang, Rongxin Su, Zhimin HeAbstractLignin sub-micro spheres have drawn wide attention because of their biodegradable, biocompatible and large surface area. However, the formation of stable and tunable lignin micro/nanospheres are limited by lignin source, preparation method and aggregation characteristics. Amphiphilic lignin tends to form aggregates in water under two tunable forces, including hydrophobic and hydrophilic interactions. Herein, we rationally modify the amphiphilic interface of...
Source: European Polymer Journal - February 1, 2020 Category: Chemistry Source Type: research

Removal of Methylene Blue from Aqueous Solutions by Silica Gel Supported Calix[4]arene Cage: Investigation of Adsorption Properties
Publication date: Available online 31 January 2020Source: European Polymer JournalAuthor(s): Farabi Temel, Mehmet Turkyilmaz, Sezen KucukcongarAbstractThe silica gel supported dinitro calix[4]arene cage (DNCC) was successfully prepared by immobilization of 3-glycidoxypropyl-bonded stationary phase (GBS) on p-tert-butylcalix[4]arene derivative having p-nitro benzyloxy moieties. The structural and composition analysis of the DNCC was performed by FT-IR, XRD, EDX, SEM, BET, and TGA techniques. After that, the proposed polymeric material as an adsorbent was used for the adsorption of methylene blue (MB) from aqueous solutions....
Source: European Polymer Journal - February 1, 2020 Category: Chemistry Source Type: research

Polymer brushes prepared by surface-initiated atom transfer radical polymerization of poly (N-isopropyl acrylamide) and their antifouling properties
Publication date: 15 February 2020Source: European Polymer Journal, Volume 125Author(s): M. Rahimi, M. NasiriAbstractPoly (N-isopropyl acrylamide) (PNIPAAm) polymer as a thermo-responsive coating was synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP) on glass substrates. The effects of chain grafting density and polymerization time on the fouling release behavior of a marine diatom were investigated. The PNIPAAm grafting and its thermo-responsiveness were confirmed by different analyses such as scanning electron microscopy (SEM), attenuated total reflectance Fourier transform infrared spectrosc...
Source: European Polymer Journal - January 30, 2020 Category: Chemistry Source Type: research

Preparation of bio-based styrene alternatives and their free radical polymerization
Publication date: Available online 27 January 2020Source: European Polymer JournalAuthor(s): Jack van Schijndel, Dennis Molendijk, Koen van Beurden, Luiz Alberto Canalle, Timothy Noël, Jan MeuldijkAbstractThree different bio-based styrene monomer alternatives, i.e., 4-vinylphenol derivatives, were synthesized starting from lignin building blocks. The synthetic route encompassed a green Knoevenagel condensation followed by two decarboxylation steps and acetylation. High isolated yields for the decarboxylation were obtained in a polar aprotic solvent, which prevented oligomerization. The polymerization of the three acet...
Source: European Polymer Journal - January 29, 2020 Category: Chemistry Source Type: research

pH and thermo-responsive hybrid hydrogels based on PNIPAAM and keratin
This study investigated PNIPAAM/keratin hybrids that were prepared by free radical polymerization of NIPAMM in the presence of functionalized keratin with vinyl group. Functionalized keratin presented functionality greater than 2, therefore, it acted as a crosslinker and a pH-responsive segment in the polymer network. Preparation occurred in an aqueous medium at room temperature or 60°C, using H2O2/ascorbic acid and ammonium persulfate redox initiators, respectively. Polymerization at 60°C led to phase segregation due to the lower critical solution temperature (LCST) behavior of the PNIPAAM aqueous solution. Howeve...
Source: European Polymer Journal - January 29, 2020 Category: Chemistry Source Type: research

Supramolecular control over self-assembly and double thermoresponsive behavior of an amphiphilic block copolymer
Publication date: Available online 28 January 2020Source: European Polymer JournalAuthor(s): Yuchen Wei, Haohui Huo, Chaobo Huang, Qilu Zhang, Richard Hoogenboom, Feng LiuAbstractA poly(ethylene glycol)-b-poly[N, N-dimethylacrylamide-ran-2-acrylamidoethyl nonanoate] (PEG-b-P(DMA-AAEN)) block copolymer has been demonstrated to show double thermoresponsive behavior in aqueous solution in the presence of hydroxypropylated cyclodextrin (HPCD). The polymer itself is insoluble in water due to the presence of hydrophobic alkyl chain, however, with the presence of HPCD, fully dissolution of the polymer could be obtained indicating...
Source: European Polymer Journal - January 29, 2020 Category: Chemistry Source Type: research

Bundle Assemblies Formation of Alternating Copolymer: Alternating Copolymerization of Symmetrical Substituted p-Quinodimethanes with Asymmetrical N,7,7-Tricyanoquinone Methide Imine in Solid State
Publication date: Available online 24 January 2020Source: European Polymer JournalAuthor(s): Takahito Itoh, Motoki Yamamura, Takaya Fukushima, Yuta Washio, Takahiro Uno, Masataka Kubo, Norimitsu Tohnai, Mikiji MiyataAbstractSymmetrical 7,7,8,8-tetrakis(alkoxycarbonyl)-p-quinodimethanes with methoxy(1a(Me)) and ethoxy(1b(Et)) as alkoxy groups formed 1:1 charge-transfer complex crystals with an asymmetrical quinoid compound, N,7,7-tricyanoquinone methide imine (2). The 1:1 formation of the crystals was ascertained on the basis of 1H NMR spectroscopy and single crystal X-ray structure analysis. These 1:1 charge-transfer compl...
Source: European Polymer Journal - January 26, 2020 Category: Chemistry Source Type: research

Polymer brushed prepared by surface-initiated atom transfer radical polymerization of poly (N-isopropyl acrylamide) and their antifouling properties
Publication date: Available online 25 January 2020Source: European Polymer JournalAuthor(s): M. Rahimi, M. NasiriAbstractPoly (N-isopropyl acrylamide) (PNIPAAm) polymer as a thermo-responsive coating was synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP) on glass substrates. The effects of chain grafting density and polymerization time on the fouling release behavior of a marine diatom were investigated. The PNIPAAm grafting and its thermo-responsiveness were confirmed by different analyses such as scanning electron microscopy (SEM), attenuated total reflectance Fourier transform infrared spect...
Source: European Polymer Journal - January 26, 2020 Category: Chemistry Source Type: research

Editorial Board
Publication date: 5 February 2020Source: European Polymer Journal, Volume 124Author(s): (Source: European Polymer Journal)
Source: European Polymer Journal - January 24, 2020 Category: Chemistry Source Type: research

Contents continued
Publication date: 5 February 2020Source: European Polymer Journal, Volume 124Author(s): (Source: European Polymer Journal)
Source: European Polymer Journal - January 24, 2020 Category: Chemistry Source Type: research

Graphical abstract TOC
Publication date: 5 February 2020Source: European Polymer Journal, Volume 124Author(s): (Source: European Polymer Journal)
Source: European Polymer Journal - January 24, 2020 Category: Chemistry Source Type: research

A novel family of optically transparent fluorinated hyperbranched polyimides with long linear backbones and bulky substituents
Publication date: Available online 20 January 2020Source: European Polymer JournalAuthor(s): Yu Liu, Jinyu Guo, Jiuyang Wang, Xiaoyu Zhu, Duo Qi, Wenze Li, Kunzhi ShenAbstractWe demonstrated here for the first time the synthesis of fluorinated hyperbranched polyimide (FHPIs) and an evaluation of their properties. A series of novel fluorinated hyperbranched polyimides were respectively synthesized via a two−step chemical imidization method involving a polycondensation reaction between 1,3,5−tris(2−trifluoromethyl−4−aminophenoxy) benzene (TFAPOB) and four different dianhydride monomers bearing b...
Source: European Polymer Journal - January 21, 2020 Category: Chemistry Source Type: research

Ring-Opening Polymerization (ROP) of Cyclic Esters by a Versatile Aluminum Diphenoxyimine Complex: from Polylactide to Random Copolymers
Publication date: Available online 20 January 2020Source: European Polymer JournalAuthor(s): Francisco M. García-Valle, Tomás Cuenca, Marta E.G. Mosquera, Stefano Milione, Jesús CanoAbstractAluminum complex [AlMeL2] (1), (L = N-(2,6-diisopropylphenyl)-phenoxyimine), promotes the Ring-Opening Polymerization (ROP) of L- and rac-lactide, and the copolymerization of L-lactide with rac-β-butyrolactone and ε-caprolactone. This complex exhibits good control over the ROP of rac-lactide producing heterorich-PLA (Pr = 0.69) with narrow dispersity (ÐM
Source: European Polymer Journal - January 21, 2020 Category: Chemistry Source Type: research

Unexpected Aqueous UCST Behavior of a Cationic Comb Polymer with Pentaarginine Side Chains
Publication date: Available online 20 January 2020Source: European Polymer JournalAuthor(s): Nicolas Zydziak, Muhammad Haseeb Iqbal, Alain Chaumont, Antoine Combes, Emeric Wasielewski, Mélanie Legros, Loïc Jierry, Philippe Lavalle, Fouzia Boulmedais, Delphine Chan-SengAbstractThermoresponsive polymers, undergoing a reversible chemical or physical change using temperature as stimulus, attract increasing interest in particular as adaptable biomaterials. Except for zwitterionic polymers, fully charged polymers require the presence of specific ions to exhibit an upper critical solution temperature (UCST) in water. ...
Source: European Polymer Journal - January 21, 2020 Category: Chemistry Source Type: research

Development of in situ nanofibrillar poly (lactic acid)/poly (butylene terephthalate) composites: Non-isothermal crystallization and crystal morphology
Publication date: 15 February 2020Source: European Polymer Journal, Volume 125Author(s): Mahboobeh Shahnooshi, Azizeh Javadi, Hossein Nazockdast, Volker AltstädtAbstractTuned one-step melt spinning of poly (lactic acid) (PLA)/poly (butylene terephthalate) (PBT) blends containing 1–10 wt% of PBT, was carried out successfully to induce in situ nanofibrils of PBT with average diameter of 23–51.4 nm. Scanning electron microscopy (SEM) images showed the morphology of PBT nanofibrils (NFs) in the PLA matrix and it was found that the aspect ratio of PBT NFs was more than 400. The crystal morphology of t...
Source: European Polymer Journal - January 21, 2020 Category: Chemistry Source Type: research

UHMWPE for Biomedical Applications: Performance and Functionalization
Publication date: Available online 19 January 2020Source: European Polymer JournalAuthor(s): Nikhil Avinash Patil, James Njuguna, Balasubramanian KandasubramanianAbstractAccording to a survey conducted by Grand View Research, the market demand for medical grade UHMWPE has raise remarkably from 60.9 kilotons up to 204.8 kilotons during 2015- 2024 valued at $1.36 billion (USD) with a compound annual growth rate of 15%. There are various materials available for medical implants comprising of metals, ceramics and polymers among them UHMWPE has been used widely. The wide impact of UHMWPE in medical field is due it’s super...
Source: European Polymer Journal - January 20, 2020 Category: Chemistry Source Type: research

Rapid synthesis of fluorescent single-chain nanoparticles via photoinduced step-growth polymerization of pendant carbazole units
Publication date: 15 February 2020Source: European Polymer Journal, Volume 125Author(s): Deniz Kilic, Ceren Pamukcu, Demet Karaca Balta, Binnur Aydogan Temel, Gokhan TemelAbstractAn easy and rapid strategy is developed to synthesize light responsive single-chain nanoparticles via photoinduced radical coupling of carbazole moieties in the side chain of polymer. Firstly, nitroxide-mediated radical polymerization is carried out for the synthesis of chloride functional styrenic copolymer. Pendant chloride groups of the polystyrene copolymer are converted to carbazole units by one-step modification. Constructed functional polym...
Source: European Polymer Journal - January 18, 2020 Category: Chemistry Source Type: research

A Review on high-throughput Synthesis, Deposition of Thin Films and properties of Polyaniline
Publication date: Available online 16 January 2020Source: European Polymer JournalAuthor(s): Nirmala Kumari Jangid, Sapana Jadoun, Navjeet KaurAbstractPolyaniline (PANI) has attracted a special attention from researchers, scientists and chemists in fields of nanotechnology. It is widely known for its easy synthesis process, high environmental stability and can be easily doped by different acids/ dyes and other dopants. This review deals with the synthesis of PANI by several methods in which oxidative polymerization is the main focused as well as deposition of thin films via chemical & physical methods has been discusse...
Source: European Polymer Journal - January 17, 2020 Category: Chemistry Source Type: research

Sol-gel coatings from DOPO-Alkoxysilanes: efficacy in fire protection of Polyamide 66 textiles
Publication date: Available online 16 January 2020Source: European Polymer JournalAuthor(s): Chanchal Kumar Kundu, Lei Song, Yuan HuAbstractTwo different DOPO- Alkoxysilane based flame retardant compounds were synthesized and applied onto the polyamide 66 (PA66) fabric surfaces via sol-gel method to improve the thermal stability and flame retardant properties. The as prepared coatings exhibited a much higher char yield% compared to the pure PA66 and simultaneously suppressed the dripping tendency of PA66 in the vertical burning test. The fabric sample modified with 20 wt.% of DOPO-APTES showed a significant reduction in th...
Source: European Polymer Journal - January 17, 2020 Category: Chemistry Source Type: research

A ‘greener’ one-pot synthesis of monoterpene-functionalised lactide oligomers
Publication date: Available online 17 January 2020Source: European Polymer JournalAuthor(s): Dara M.O'Brien, Rachel L. Atkinson, Robert Cavanagh, Ana A.C. Pacheco, Ryan Larder, Kristoffer Kortsen, Eduards Krumins, Alice J. Haddleton, Cameron Alexander, Robert A. Stockman, Steven M. Howdle, Vincenzo TarescoAbstractIn this work we aimed to achieve a totally sustainable Ring Opening Polymerisation (ROP) process, by harmonising the use of naturally occurring or derivable initiators and the green solvent 2-Methyltetrahydrofuran (2-MeTHF). First, a library of novel monoterpene-alcohols and existing terpenoids was used to provide...
Source: European Polymer Journal - January 17, 2020 Category: Chemistry Source Type: research

Dextran-crosslinked glucose responsive nanogels with a self-regulated insulin release at physiological conditions
Publication date: Available online 15 January 2020Source: European Polymer JournalAuthor(s): Tarig Elshaarani, Haojie Yu, Li Wang, Long Lin, Nan Wang, Kaleem ur Rahman Naveed, Li Zhang, Yin Han, Shah Fahad, Zhipeng NiAbstractDifferent glucose-responsive nanogels of N-isopropylacrylamide (NIPAM) and 4-(1,6-dioxo-2,5-diaza-7-oxamyl) phenylboronic acid (DDOPBA) were synthesized using dextran-grafted maleic acid (Dex-MA) as a crosslinker. The formed nanogels (P(NIPAM-co-Dex-co-DDOPBA)s) were verified by 1H NMR, TEM, DLS and X-ray photoelectron spectroscopy (XPS). The incorporation of DDOPBA provided a remarkable sensitivity to...
Source: European Polymer Journal - January 15, 2020 Category: Chemistry Source Type: research

In situ loading of polyurethane/negative ion powder composite film with visible-light-responsive Ag3PO4@AgBr particles for photocatalytic and antibacterial applications
Publication date: Available online 15 January 2020Source: European Polymer JournalAuthor(s): Xiaohong Wang, Jian Jian, Zhengqiu Yuan, Jianxian Zeng, Lei Zhang, Taofen Wang, Hu ZhouAbstractA multifunctional Ag3PO4@AgBr-polyurethane/negative ion powder (Ag3PO4@AgBr-PU/NI) composite film is obtained by a combination of nonsolvent induced phase separation (NIPS) and an impregnation-precipitation-ion exchange method. The PU/NI composite film has an asymmetric porous structure and is used as a support to provide sites for the in situ loading of Ag3PO4@AgBr particles. Various analytical techniques are applied to explore the chara...
Source: European Polymer Journal - January 15, 2020 Category: Chemistry Source Type: research

High strength ultrafine cellulose fibers generated by solution blow spinning
Publication date: Available online 15 January 2020Source: European Polymer JournalAuthor(s): Jiaping Zhang, Hideki Kitayama, Yasuo GotohAbstractA wet-type solution blow spinning system equipped with a single concentric nozzle was assembled to investigate the key factors for preparing ultrafine regenerated cellulose fibers. The effects of the degree of polymerization (DP) of cellulose and the velocity of blown air on fiber morphology were studied by rheological analyses and scanning electron microscopy. The results demonstrated that cellulose with a DP of 2365, together with a high air velocity, could aid the formation of c...
Source: European Polymer Journal - January 15, 2020 Category: Chemistry Source Type: research

Revisiting the synthesis of poly(2-aminothiazole) for removal of Hg(II) in aqueous solution
Publication date: Available online 15 January 2020Source: European Polymer JournalAuthor(s): Hua Zou, Di WuAbstractThe synthesis of poly(2-aminothiazole)(PAT) for selective removal of Hg(II) in aqueous solutions has been previously described [Ind. Eng. Chem. Res. 2016, 55, 4911–4918]. In the present work, the synthesis of PAT by chemical oxidation method using copper chloride as the oxidant in aqueous solution was revisited. The effects of the oxidant/monomer molar ratio and polymerization temperature on the polymerization yield and adsorption capacity were investigated. The PATs were characterized by FT-IR, X-ray ph...
Source: European Polymer Journal - January 15, 2020 Category: Chemistry Source Type: research

Highly Stretchable, Solution-processable, and Crosslinkable Poly(3,4-ethylenedioxithiophene)-based Conjugated Polymers
Publication date: Available online 15 January 2020Source: European Polymer JournalAuthor(s): Min Wang, Seyoung Kee, David Barker, Jadranka Travas-SejdicAbstractHerein, we designed and synthesised a stretchable, solution-processable and crosslinkable π-conjugated polymer (CP) comprised of functional poly(n-butyl acrylate-co-glycidyl methacrylate) (poly(BA-co-GMA) side chains along a poly(3,4-ethylenedioxithiophene) (PEDOT)-based CP backbone. The incorporation of PBA side chains endowed the rigid conjugated backbone with intrinsic softness and adhesiveness as well as superior stretchability of up to 200% strain without fo...
Source: European Polymer Journal - January 15, 2020 Category: Chemistry Source Type: research