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Processable poly(benzoxazole imide)s derived from asymmetric benzoxazole diamines containing 4-phenoxy aniline: synthesis, properties and the isomeric effect

Wed, 04/25/2018 - 11:56

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00382C, PaperLala Rukh Sidra, Guofei Chen, Nafeesa Mushtaq, Kai Ma, Beenish Bashir, Xingzhong Fang
A novel series of poly(benzoxazole imide)s are synthesized using asymmetric benzoxazole monomers in an attempt to enhance solution and melt processability.
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Categories: Polymer Science News

Anionic polymerization of activated oxetane and its copolymerization with ethylene oxide for the synthesis of amphiphilic block copolymers

Wed, 04/25/2018 - 10:55

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00307F, PaperMatthieu Gervais, Antoine Forens, Emmanuel Ibarboure, Stephane Carlotti
The anionic polymerization of oxetane in toluene was achieved using a combination of tetraoctylammonium bromide and simple triisobutylaluminum. By its copolymerization with ethylene oxide, di- and triblock copolymers were prepared in one and two steps respectively.
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Categories: Polymer Science News

Recent advances in alkyne-based click polymerizations

Wed, 04/25/2018 - 07:51
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02047C, MinireviewDie Huang, Yong Liu, Anjun Qin, Ben Zhong Tang
Click chemistry, with remarkable advantages such as high efficiency, atom economy, mild reaction conditions, very high yield, regio- and/or stereoselectivity, and good functionality tolerance, has been nurtured into a powerful...
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Categories: Polymer Science News

Preparation of Biorenewable Poly([gamma]-butyrolactone)-b-poly(L-lactide) Diblock Copolyesters via One-pot Sequential Metal-free Ring-Opening Polymerization

Tue, 04/24/2018 - 02:23
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00389K, Paperyong shen, Jinbo Zhang, Na Zhao, Fusheng Liu, Zhibo Li
The preparation of block copolymers containing poly([gamma]-butyrolactone) block remains as a synthetic challenge owing to the unfavorable thermodynamics towards the ring-opening polymerization (ROP) of "non-strain" five-membered ring, which makes it...
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Categories: Polymer Science News

Polymerization-induced self-assembly of Large-scale iohexol nanoparticles as contrast agents for X‑ray Computed Tomography Imaging

Tue, 04/24/2018 - 00:22
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00192H, PaperYuxun Ding, Xinyu Zhang, Yingjin Xu, Tangjian Cheng, Hanlin Ou, Zhanyong Li, Yingli An, Wenzeng Shen, Yang Liu, Linqi Shi
X-ray computed tomography (CT) is one of the most useful imaging technologies on clinic. To increase the sensitivity of CT, iodinated compounds are used as injectable contrast agents. Unfortunately, the...
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Categories: Polymer Science News

Biomimetic antimicrobial polymers: recent advances in molecular design

Mon, 04/23/2018 - 12:13

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00012C, Review Article Open Access &nbsp This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Cansu Ergene, Kazuma Yasuhara, Edmund F. Palermo
The increasing prevalence of antibiotic-resistant bacterial infections, coupled with the decline in the number of new antibiotic drug approvals, has created a therapeutic gap that portends an emergent public health crisis.
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Categories: Polymer Science News

Redox-Triggered Hydrogels Revealing Switchable Stiffness Properties and Shape-Memory Functions

Mon, 04/23/2018 - 12:13
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00515J, PaperMichael Fadeev, Gilad Davidson-Rozenfeld, Yonatan Biniuri, Ravit Yakobi, Remi Cazelles, Miguel Angel Aleman Garcia, Itamar Willner
The synthesis, characterization and application of redox-switchable hydrogels are described. One system includes the crosslinking of terpyridine-functionalized acrylamide copolymer chains by redox-active metal-ion terpyridine complexes (Mn/n+1 = Ru2+/3+; Os2+/3+). The...
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Categories: Polymer Science News

Controllable Fabrication of the Novel pH-, Thermo-, and Light-Responsive Supramolecular Dendronized Copolymers with Dual Self-Assembly Behavior

Mon, 04/23/2018 - 06:10
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00448J, PaperChangan Yang, Ling Chen, He Huang, Tuo Ji, YingXiang Jiang, Congshan Zhou, Xiaobo Chen
Novel tri-stimulus responsive supramolecular dendronized copolymers are prepared through self-assembly of imine bonds, exhibiting fast and fully reversible phase transitions and trans-cis isomerization in alkaline solutions. The lower critical solution...
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Categories: Polymer Science News

Photoinduced controlled radical polymerization of methyl acrylate and vinyl acetate by xanthate

Mon, 04/23/2018 - 06:10
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00050F, PaperJiajia Li, Xiangqiang Pan, Na Li, Jian Zhu, Xiulin Zhu
A novel fluoro-xanthate, 2-((4-fluorophenoxycarbonothioyl)thio) ethyl propanoate, was developed and successfully used as the mediator in the photoinduced controlled radical polymerization of more-activated monomers (methyl acrylate (MA), butyl acrylate, and N-isopropylacrylamide)...
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Categories: Polymer Science News

(PtBA-co-PPEGMEMA-co-PDOMA)-g-PPFA Polymer Brushes Synthesized by Sequential RAFT Polymerization and ATRP

Mon, 04/23/2018 - 06:10
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00470F, PaperDingfeng Shen, Binbin Xu, Xiaoyu Huang, Qixin zhuang, Shaoliang Lin
A novel approach for preparing self-cleaning anti-fouling surfaces with compositional heterogeneous polymer brushes at a molecular-length scale was developed. The approach exploits three critical elements including hydrophilic poly(ethylene glycol) (PEG)...
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Categories: Polymer Science News

Synthesis and characterization of CO2-sensitive temperature-responsive catalytic poly(ionic liquid) microgels

Mon, 04/23/2018 - 06:10
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00352A, PaperShoumin Chen, Xuezhen Lin, Zhenghao Zhai, Ruyue Lan, Jin Li, Yu-Song Wang, Shiming Zhou, Zahoor Hussain Farooqi, Weitai Wu
We report a class of poly(anionic liquid) microgels that are sensitive to carbon dioxide (CO2). Such a microgel is synthesized from free radical precipitation polymerization of tetrabutylphosphonium 4-styrenesulfonate, 1-vinyl-1H-imidazole and...
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Categories: Polymer Science News

Normal, ICAR and Photomediated Butadiene-ATRP with Iron Complexes

Fri, 04/20/2018 - 14:43
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00463C, Papervignesh vasu, Joon-Sung Kim, Hyun-Seok Yu, William Bannerman, Mark Johnson, Alexandru Dragos Asandei
The ligand (L) and halide effects of a series of iron complexes (FeX2 or FeX3, X = Cl, Br)/L supported by carbon (Cp2Fe2(I)(CO)4 > Cp2Fe > Fe(CO)5 > (Ph2PCp)2Fe), nitrogen...
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Categories: Polymer Science News

Stimuli-Responsive Supramolecular Conjugated Polymer with Phototunable Surface Relief Grating

Fri, 04/20/2018 - 06:37
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00439K, PaperCheng-Wei Huang, Wen-Yu Ji, Shiao-Wei Kuo
We have used a facile method to prepare azobenzene- and (bio-inspired) thymine (T)-functionalized conjugated copolymers (PTCAz-T) through Suzuki coupling polymerization and click reactions. The glass transition temperature of PTCAz-T is...
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Categories: Polymer Science News

Catalytic Metal-based Systems for Controlled Statistical Copolymerisation of Lactide with a Lactone

Fri, 04/20/2018 - 06:37
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00310F, Review ArticleEmma Stirling, Yohan Champouret, Marc Visseaux
Polylactide (PLA) is currently considered as a major polymer which could serve as a potential substitute to the widely used petroleum-based plastics. It is typically produced by coordination-insertion polymerisation (Ring-Opening...
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Categories: Polymer Science News

Electrospun nanofiber reinforced composites: a review

Fri, 04/20/2018 - 05:35
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00378E, Review ArticleShaohua Jiang, Yiming Chen, Gaigai Duan, Changtong Mei, Andreas Greiner, Seema Agarwal
This paper provides a comprehensive overview on the properties of electrospun nanofibers and their application as reinforcements in composites. The paper first introduce the remarkable properties of electrospun nanofibers including...
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Categories: Polymer Science News

Discrete oligodimethylsiloxane-oligomethylene di- and triblock co-oligomers: synthesis, self-assembly and molecular organisation

Thu, 04/19/2018 - 17:18
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00355F, PaperBas van Genabeek, Bas FM de Waal, Anja Palmans, E. W. Meijer
A new class of discrete-length block co-oligomers comprising oligodimethylsiloxane (oDMS) and oligomethylene (oM) is presented. For this, oM blocks containing up to 69 backbone carbons are synthesised via an iterative,...
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Categories: Polymer Science News

Comparative Study of Intrachain Cyclization and Solution Property of Long-subchain Hyperbranched Polymers Prepared via Y-type and V-type Macromonomer Approaches

Thu, 04/19/2018 - 10:12
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00362A, PaperMo Zhu, Nairong Hao, Jinxian Yang, Lianwei Li
V-type (B~~A~~B) and Y-type (A~~~~B2) macromonomer approaches are two of the most widely adopted synthetic methodologies for the preparation of long-subchain hyperbranched polymers (LHPs) with controlled subchain length. However, little...
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Categories: Polymer Science News

Accelerating the acidic degradation of a novel thermoresponsive polymer by host-guest interaction

Thu, 04/19/2018 - 08:10

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00188J, PaperPeng Wei, Stefan Gotz, Stephanie Schubert, Johannes C. Brendel, Ulrich S. Schubert
Carboxylate modified pillar arenes can not only shift the LCST of acetalized polymers but can also accelerate their hydrolysis under acidic conditions.
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Categories: Polymer Science News

Precise Synthesis of Poly(N-Acryloyl Amino Acid) Through Photoinduced Living Polymerization

Thu, 04/19/2018 - 05:03
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00366A, PaperGuofeng Li, Wenli Feng, Nathaniel Corrigan, Cyrille Boyer, Xing Wang, Jiangtao Xu
Amino acid-based polymers possess exceptional physical structures, chemical properties, and biocompatibility and have shown great potential in applications, including drug delivery, chiral recognition, and sensor materials, among others. The precise...
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Categories: Polymer Science News

Polymeric Crown Ethers: LCST Behavior in Water and Stimuli-Responsiveness

Thu, 04/19/2018 - 05:03
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00412A, CommunicationDechun Huang, Qiao Zhang, Yan Deng, Zheng Luo, Bo Li, Xin Shen, Zhenhui Qi, Shengyi Dong, Yan Ge, Wei Chen
A crown ether-functionalized poly(vinyl alcohol) system that shows lower critical solution temperature (LCST) phase separation behavior in water was developed. In this hybrid polymer-low molecular weight monomer system, benzo-21-crown-7 units...
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Categories: Polymer Science News

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