Polymer Science News

Self-assembly of poly(vinylidene fluoride)-block-poly(2-(dimethylamino)ethylmethacrylate) block copolymers prepared by CuAAC click coupling

RSC - Polym. Chem. latest articles - Wed, 05/17/2017 - 06:21
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00346C, PaperMarc Guerre, Mona Semsarilar, Cedric Totee, Bruno Ameduri, Vincent Ladmiral
Poly(vinylidene fluoride) (PVDF) is a very important fluoropolymers which possesses remarkable physico-chemical properties such as high thermal and chemical resistances as well as ferroelectricity for example. So far,only Iodine Transfer...
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Categories: Polymer Science News

Looped flow RAFT polymerization for multiblock copolymer synthesis

RSC - Polym. Chem. latest articles - Wed, 05/17/2017 - 06:21
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00630F, CommunicationAgnes Kuroki, Ivan Martinez-Botella, Christian Hornung, Liam Martin, Elizabeth Georgina Lucy Williams, Katherine Locock, Matthias Hartlieb, Sebastien Perrier
A looped flow process was designed for the synthesis of well-defined multiblock copolymers using Reversible Addition-Fragmentation chain Transfer (RAFT) polymerization. The reaction conditions were optimized to reach high conversions whilst...
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Categories: Polymer Science News

Naphthodipyrrolidone (NDP) Based Conjugated Polymers with High Electron Mobility and Ambipolar Transport Properties

RSC - Polym. Chem. latest articles - Wed, 05/17/2017 - 06:21
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00616K, CommunicationHaichang Zhang, Shuo Zhang, Yifan Mao, Kewei Liu, Yu-Ming Chen, Zhang Jiang, Joseph Strzalka, Wenjun Yang, Chien-Lung Wang, Yu Zhu
Two novel donor-acceptor [small pi]-conjugated polymers based on naphthodipyrrolidone (NDP) were synthesized and characterized. The polymers possess low band gaps and suitable molecular orbital levels as ambipolar semiconductors. The thin film...
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Categories: Polymer Science News

Silica/methacrylate class II hybrid: Telomerisation vs. RAFT polymerisation

RSC - Polym. Chem. latest articles - Wed, 05/17/2017 - 06:21
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00516D, PaperAnthony L. B. Macon, Toshihiro Kasuga, C. Remzi Becer, Julian R Jones
Inorganic-organic co-networks prepared by the sol-gel method are a promising class of materials due to their unique physical and biological properties, especially when covalent bonds are formed between the networks....
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Categories: Polymer Science News

Selective Solvent-Induced Reconstruction in Confined Space: One-Dimensional Mesoporous Block Copolymer Structures in Cylindrical Nanopores

RSC - Polym. Chem. latest articles - Wed, 05/17/2017 - 06:21
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00579B, CommunicationChun-Wei Chang, Mu-Huan Chi, Hao-Wen Ko, Chien-Wei Chu, Zhi-Xuan Fang, Yi-Hsuan Tu, Jiun-Tai Chen
We investigate the formation of polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) nanostructures confined in cylindrical nanopores via a novel selective solvent-induced reconstruction process. The key factors on the morphologies of the nanostructures are...
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Categories: Polymer Science News

Controlled radical polymerization of vinyl ketones using visible light

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 09:55

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY00617A, PaperIn-Hwan Lee, Emre H. Discekici, Athina Anastasaki, Javier Read de Alaniz, Craig J. Hawker
Herein we report the photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of a range of vinyl ketone monomers including methyl, ethyl and phenyl derivatives, using Eosin Y as an organic photoredox catalyst and visible light.
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Categories: Polymer Science News

Gas separation mechanism of CO2 selective amidoxime-poly(1-trimethylsilyl-1-propyne) membranes

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 09:55

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY00056A, PaperHongbo Feng, Tao Hong, Shannon M. Mahurin, Konstantinos D. Vogiatzis, Kevin R. Gmernicki, Brian K. Long, Jimmy W. Mays, Alexei P. Sokolov, Nam-Goo Kang, Tomonori Saito
Amidoxime functionalization on polymer matrix significantly increases CO2/N2 solubility selectivity.
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Categories: Polymer Science News

C1 Polymerization: a unique tool towards polyethylene-based complex macromolecular architectures

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 06:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00581D, Review ArticleDe Wang, Zhen Zhang, Nikos Hadjichristidis
The recent developments in organoborane initiated C1 polymerization (chain grows by one atom at a time) of ylides opens unique horizons towards well-defined/perfectly linear polymethylenes (equivalent to polyethylenes, PE) and...
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Categories: Polymer Science News

Large-Scale Fabrication of Polymer Ellipsoids with Controllable Patches via Viscosity-Induced Deformation of Spherical Particles

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 06:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00475C, CommunicationLei Tian, Xue Li, Dewei Wan, Zafar Ali, Qiuyu Zhang
A simple and controllable strategy to synthesize polymer ellipsoids via viscosity-induced deformation of spherical particles is proposed. These polymer ellipsoids can be employed as living seed particles to fabricate patchy...
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Categories: Polymer Science News

Photoresponsive liquid crystalline polymer single-chain nanoparticles

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 06:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00668C, PaperWeizheng Fan, Xia Tong, Guo Li, Yue Zhao
A new type of multifunctional polymer single-chain nanoparticles (SCNPs) is reported, which is prepared from a side-chain liquid crystalline polymer (LCP), namely, poly{6-[4-(4-methoxyphenylazo)phenoxy]hexylmethacrylate-co-4-methyl-[7-(methacryloyl)oxy-ethyl-oxy]coumarin} (PAzoMACMA). The polymer's side groups comprise photoisomerizable...
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Categories: Polymer Science News

Anionic polymerization of ethyl acrylate initiated by tetrabutylammonium azide: Direct synthesis of end-clickable polyacrylate

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 04:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00560A, CommunicationYuki Kataoka, Yasuhiro Kohsaka, Takehiro Kitaura, Shogo Domae, Shoya Ishihara, Tatsuki Kitayama
Tetrabutylammonium azide was found to initiate the anionic polymerization of ethyl acrylate (EA) in the presence of alkylaluminum bisphenoxides in toluene to afford azide-end polymers with narrow molecular weight distributions...
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Categories: Polymer Science News

Photoinduced Controlled Radical Polymerization of Methacrylates with Benzaldehyde Derivatives as Organic Catalysts

RSC - Polym. Chem. latest articles - Tue, 05/09/2017 - 04:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00408G, PaperWenchao Ma, Xianhong Zhang, Yuhong Ma, Dong Chen, Li Wang, Changwen Zhao, Wantai Yang
Photo-induced controlled radical polymerization of methacrylates with perfluoro-1-iodohexane as an initiator and benzaldehyde derivatives, including p-anisaldehyde, p-cyanobenzaldehyde and 2,4-dimethoxy benzaldehyde, as organic photocatalysts are demonstrated by using 23 W compact...
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Categories: Polymer Science News

Determination and correlation of regioselectivity and dead dormant species from head addition in an acrylate RAFT polymerization

RSC - Polym. Chem. latest articles - Mon, 05/08/2017 - 05:39
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00720E, PaperRuiwei Guo, Yuan Yao, Shaoling Bai, Yaqi Wang, Zhipeng Shi, Jianhua Zhang
Regioselectivity, a fundamental feature of radical addition reaction, has not received enough attention in reversible deactivation radical polymerization, especially for acrylates. However, in RAFT polymerization, the primary alkyl radicals, derived...
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Categories: Polymer Science News

Cationic peptidopolysaccharides synthesized by 'click' chemistry with enhanced broad-spectrum antimicrobial activities

RSC - Polym. Chem. latest articles - Mon, 05/08/2017 - 05:39
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00528H, PaperYajuan Su, Liang Tian, Meng Yu, Qiang Gao, Dehui Wang, Yuewei Xi, Peng Yang, Bo Lei, Peter X Ma, Peng Li
The emergence and spread of multidrug-resistant (MDR) bacteria is a serious clinical problem, and a challenge for the medical research community. There is an urgent need to explore novel effective...
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Categories: Polymer Science News

Preparation of Mechanoresponsive Hairy Particles Using Polymeric Surfactants in Emulsion Polymerization

RSC - Polym. Chem. latest articles - Mon, 05/08/2017 - 04:37
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00468K, PaperHui Li, Yuyu Zhang, Yibin Liu, Rint P Sijbesma, Johan P.A. Heuts, Qiuyu Zhang
We demonstrate that diblock copolymers comprising of hydrophobic polystyrene and hydrophilic poly(acrylic acid) blocks connected by an off-center anthracene-maleimide Diels-Alder adduct mechanophore are mechanochemically active when sonicated in the form...
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Categories: Polymer Science News

One-pot blue-light triggered tough interpenetrating polymeric network (IPN) using CuAAC and methacrylate reactions

RSC - Polym. Chem. latest articles - Mon, 05/08/2017 - 04:37
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00623C, CommunicationAbhishek Umakant Shete, Christopher Kloxin
An interpenetrating polymeric network (IPN) is formed in a one-pot blue-light activated scheme, where the step- and chain- growth polymerizations of the CuAAC and methacrylate reactions, respectively, are simultaneously triggered...
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Categories: Polymer Science News

An efficient chain transfer reaction of the trithiocarbonate unit as a tool to prepare a functional polyolefin: a post-polymerization modification of ethylene-propylene-diene terpolymer for improved oil resistance

RSC - Polym. Chem. latest articles - Fri, 05/05/2017 - 10:17

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY00287D, PaperJoon Hwi Jo, Sung Chul Hong
A novel strategy to modify polyolefins is applied to EPDM by using an efficient radical chain transfer reaction of trithiocarbonate.
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Categories: Polymer Science News

Enzymatic grafting of amylose on chitin nanofibers for hierarchical construction of controlled microstructures

RSC - Polym. Chem. latest articles - Fri, 05/05/2017 - 05:16

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY00521K, PaperNaomichi Egashira, Kazuya Yamamoto, Jun-ichi Kadokawa
In this study, controlled microstructures were constructed by enzymatic grafting on amidinium chitin nanofibers, followed by lyophilisation, which were changed from network to porous morphologies depending on the molecular weights of amylose graft chains.
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Categories: Polymer Science News

An indacenodithiophene-based semiconducting polymer with high ductility for stretchable organic electronics

RSC - Polym. Chem. latest articles - Fri, 05/05/2017 - 04:16
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00435D, PaperYilin Li, Wesley Tatum, Jonathan Onorato, Sierra Barajas, Yun Yang, Christine Luscombe
An alkyl-substituted indacenodithiophene-based donor-acceptor [small pi]-conjugated polymer (PIDTBPD) with low stiffness and high ductility is reported. The polymer was synthesized after DFT calculations predicted that it would show strong intramolecular charge...
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Categories: Polymer Science News

A Study of Fused-Ring Thienopyrazine Polymers as n-Type Materials for Organic Supercapacitors

RSC - Polym. Chem. latest articles - Fri, 05/05/2017 - 04:16
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00512A, PaperBryony McAllister, Tyler Schon, Paul DiCarmine, Dwight Seferos
Conjugated polymer pseudocapacitors achieve high capacitances[space]because they store charge through[space]fast, reversible redox reactions. However, most of these polymers are only capable of storing charge in a[space]'positive' potential range, which results...
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Categories: Polymer Science News

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