Polymer Science News

Rapid Copolymerization of Canola Oil Derived Epoxide Monomer with Anhydrides and Carbon Dioxide (CO2)

RSC - Polym. Chem. latest articles - Mon, 09/25/2017 - 06:34
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01429E, PaperLiejiang Jin, Hongbo Zeng, Aman Ullah
Canola oil derived monomer, 1-decene, was converted to 1,2-epoxydecane with >90% yield. The ring opening copolymerization of 1,2-epoxydecane with carbon dioxide (CO2) and different cyclic anhydrides including maleic, succinic, itaconic,...
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Categories: Polymer Science News

Mechanism of Supplemental Activator and Reducing Agent Atom Transfer Radical Polymerization Mediated by Inorganic Sulfites: Experimental Measurements and Kinetic Simulations

RSC - Polym. Chem. latest articles - Fri, 09/22/2017 - 11:32
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01319A, PaperPawel Krys, Marco Fantin, Patricia Mendonca, Carlos M. R. Abreu, Tamaz Guliashvili, Jaquelino Rosa, Lino Santos, Armenio Coimbra Serra, Krzysztof Matyjaszewski, Jorge Coelho
The mechanism of atom transfer radical polymerization (ATRP) mediated by sodium dithionite (Na2S2O4), with CuIIBr2/Me6TREN as catalyst (Me6TREN: tris[2-(dimethylamino)ethyl]amine)) in ethanol/water mixtures, was investigated experimentally and by kinetic simulations. A...
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Categories: Polymer Science News

Hydrogels through Emulsion Templating: Sequential Polymerization and Double Networks

RSC - Polym. Chem. latest articles - Fri, 09/22/2017 - 11:32
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01305A, PaperSebastijan Kovacic, Michael S. Silverstein
Double-network (DN) hydrogels combine two very different polymer networks. Here, porous hydrogels with DN structures were successfully synthesized in two sequential free-radical polymerization steps. The first network was templated within...
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Categories: Polymer Science News

Superabsorbent Hydrogels made from Bio-sourced Butyrolactone Monomer in Aqueous Solution

RSC - Polym. Chem. latest articles - Thu, 09/21/2017 - 11:06
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01397C, PaperSharmaine B. Luk, Jozef Kollar, Anna Chovancova, Miroslav Mrlik, Igor Lacik, Jaroslav Mosnacek, Robin A. Hutchinson
A new water-soluble monomer, sodium 4-hydroxy-4-methyl-2-methylene butanoate (SHMeMB), formed by saponification of the bio-derived monomer [gamma]-methyl-[small alpha]-methylene-[gamma]-butyrolactone (MeMBL), was copolymerized with acrylamide (AM) in aqueous solution to make superabsorbent hydrogels with...
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Categories: Polymer Science News

Evaluation of (E)-1,2-di(furan-2-yl)ethene as building unit in diketopyrrolopyrrole alternating copolymers for transistors

RSC - Polym. Chem. latest articles - Thu, 09/21/2017 - 07:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01373F, PaperMihaela Corina Stefan, Jia Du, Chandima Bulumulla, Israel Mejia, Gregory T McCandless, Michael C Biewer
Alternating copolymers poly(2,5-bis(2-decyltetradecyl)-3,6-di(furan-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione-b-(E)-1,2-di(furan-2-yl)ethene) (P(FDPP-FVF)) and poly(2,5-bis(2-decyltetradecyl)-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione-b-(E)-1,2-di(furan-2-yl)ethene)) (P(ThDPP-FVF)), composed of (E)-1,2-di(furan-2-yl)ethene and diketopyrrolopyrrole, were synthesized and studied for solution-processable organic field effect transistors (OFETs). Highest hole mobilities of 0.45 and 0.24...
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Categories: Polymer Science News

Fluorescent and "breathable" CO2 responsive vesicles inspired from green fluorescent protein

RSC - Polym. Chem. latest articles - Thu, 09/21/2017 - 07:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00963A, PaperLei Xu, Ning Ren, Ji Pang, Hongping Deng, Xinyuan Zhu, Mo Sun, Deyue Yan
The design of the green fluorescent protein (GFP) chromophore labeled, CO2 responsive vesicles that can mimic the breathing of jellyfish is described. The vesicles were obtained via the self-assembly of...
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Categories: Polymer Science News

Reprocessable Polyhydroxyurethane Network Exhibiting Full Property Recovery and Concurrent Associative and Dissociative Dynamic Chemistry via Transcarbamoylation and Reversible Cyclic Carbonate Aminolysis

RSC - Polym. Chem. latest articles - Thu, 09/21/2017 - 06:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01160A, CommunicationXi Chen, Lingqiao Li, Kailong Jin, John M Torkelson
We discovered that polyhydroxyurethane (PHU) networks synthesized in the presence of catalyst from five-membered cyclic carbonates are intrinsically reprocessable with full property recovery via transcarbamoylation exchange reactions and reversible cyclic...
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Categories: Polymer Science News

Functionalized allylamine polyphosphate as novel multifunctional highly efficient fire retardant for polypropylene

RSC - Polym. Chem. latest articles - Thu, 09/21/2017 - 05:01
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01315A, PaperDan Xiao, Zhi Li, Uwe Gohs, Udo Wagenknecht, Brigitte Voit, De-Yi Wang
In this study, an efficient novel allylamine polyphosphate (AAPP) as flame retardant (FR) crosslinker is used to improve the thermal stability of flame retarded polypropylene (PP) composites under electron beam...
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Categories: Polymer Science News

Drug Induced Self-Assembly of Triblock Copolymers into Polymersomes for the Synergistic Dual-Drug Delivery of Platinum drugs and Paclitaxel

RSC - Polym. Chem. latest articles - Wed, 09/20/2017 - 05:44
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01162H, PaperManuela Callari, Sandy Wong, Hongxu Lu, Janice R Aldrich-Wright, Paul DeSouza, Martina Heide Stenzel
Co-delivery of two drugs in one nanoparticle is increasingly used to overcome for example multi-drug resistance in cancer therapy and therefore suitable drug carriers need to be developed. In this...
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Categories: Polymer Science News

Bio-derived polymers for coating applications: comparing poly(limonene carbonate) and poly(cyclohexadiene carbonate)

RSC - Polym. Chem. latest articles - Wed, 09/20/2017 - 04:42

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY01223C, PaperTim Sto[German sz ligature}er, Chunliang Li, Junjuda Unruangsri, Prabhjot K. Saini, Rafael J. Sablong, Michael A. R. Meier, Charlotte K. Williams, Cor Koning
Two fully bio-based polycarbonates, poly(limonene carbonate) and poly(cylcohexadiene carbonate), were post-functionalized via thiol-ene reactions and tested as future coating materials.
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Categories: Polymer Science News

Biomolecularly stimuli-responsive tetra-poly(ethylene glycol) that undergoes sol-gel transition in response to a target biomolecule

RSC - Polym. Chem. latest articles - Tue, 09/19/2017 - 13:29
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01370A, PaperChisa Norioka, Kazuma Okita, Miho Mukada, Akifumi Kawamura, Takashi Miyata
Stimuli-responsive polymers that undergo a sol-gel transition in response to changes in environmental factors such as pH and temperature have attracted considerable attention for biomedical applications such as drug reservoirs...
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Categories: Polymer Science News

Temperature Programed Photo-induced RAFT Polymerization for Stereo-block Copolymer of Poly(vinyl acetate)

RSC - Polym. Chem. latest articles - Tue, 09/19/2017 - 13:29
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01531C, CommunicationNa Li, Dongdong Ding, Xiangqiang Pan, Zhengbiao Zhang, Jian Zhu, Cyrille Boyer, Xiulin Zhu
Photo-induced RAFT polymerization provides the opportunity for carrying out radical polymerization over a broad temperature range under mild conditions. Combining this technique with a fluoroalcohol as solvent, stereo-triblock copolymers of...
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Categories: Polymer Science News

Grafting density and thickness of polythiophene-based brushes determine orientation, conjugation length and stability of the grafted chains

RSC - Polym. Chem. latest articles - Tue, 09/19/2017 - 13:29
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01418J, PaperKarol Wolski, Anna Gruszkiewicz, Magdalena Wytrwal, Andrzej Bernasik, Szczepan Zapotoczny
Self-templating surface-initiated technique that combines surface-initiated atom transfer radical polymerization (SI-ATRP) and oxidative polymerization for fabrication of conjugated polythiophene-based brushes in ladder-like architecture was developed here. Selective cleaving of polymer...
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Categories: Polymer Science News

A novel radical polymerization system initiated by a redox reaction with NHPI and xanthone

RSC - Polym. Chem. latest articles - Tue, 09/19/2017 - 13:29
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01329A, CommunicationXu Yan, Lihua Zhang, Qian Liu, Guan Wang, Xiaofei Liu, Wantai Yang
A novel redox reaction system consisting of xanthone (XT) and N-hydroxyphthalimide (NHPI) for radical polymerization is developed where NHPI and XT experinces a one-electron-transfer reaction, which produces two kinds of...
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Categories: Polymer Science News

Polyurethane-Chitosan Brush as Injectable Hydrogel for Controlled Drug Delivery and Tissue Engineering

RSC - Polym. Chem. latest articles - Tue, 09/19/2017 - 13:29
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01218G, PaperPralay Maiti, Arun Kumar Mahanta, Sudipta Senapati
Hydrogel and porous lyophilized hydrogel have been designed using polyurethane brush with chitosan backbone through grafting. Degree of substitution of grafting has been varied for controlled properties and has been...
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Categories: Polymer Science News

A new fluoropolymer having triazine rings as a dielectric material: synthesis and properties

RSC - Polym. Chem. latest articles - Mon, 09/18/2017 - 08:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01207A, Paperqiang fang, Junfeng Zhou, Jiajia Wang, kaikai jin, Jing Sun, Xiaojun Guo, Jiaqing Zhao
A novel fluoropolymer having triazine rings and thermo-crosslinkable benzocyclobutene units is prepared by a facile phase transfer catalyzed interfacial polycondensation reaction between a diphenol and a dichloro-s-triazine. This is a...
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Categories: Polymer Science News

One-Pot Formation of Monodisperse Polymer@SiO2 Core-Shell Nanoparticles via Surfactant-Free Emulsion Polymerization Using an Adaptive Silica Precursor Polymer

RSC - Polym. Chem. latest articles - Mon, 09/18/2017 - 08:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01264K, PaperYongliang Zhao, Haitao Wang, Xiaomin Zhu, Martin Moller
Aqueous emulsion polymerization is by far the most important method for synthesizing polymer nanoparticles. In this work we report a new type of surfactant-free emulsion polymerization process for one-step formation...
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Categories: Polymer Science News

A red-emitting cationic hyperbranched polymer: Facile synthesis, aggregation-enhanced emission, large Stokes shift, polarity-insensitive fluorescence and application in cell imaging

RSC - Polym. Chem. latest articles - Mon, 09/18/2017 - 08:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01378G, PaperRui Chen, Xiaoying Gao, Xiao Cheng, Anjun Qin, Jing Zhi Sun, Ben Zhong Tang
We report the synthesis and properties of a cationic hyperbranched polymer containing tetraphenylethene (TPE) and pyridinium moieties. The polymerization was efficient under mild condition (60 oC, 12 h) and the...
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Categories: Polymer Science News

Synthesis of surfactant-free micro- and nanolatexes from Pickering emulsions stabilized by acetylated cellulose nanocrystals

RSC - Polym. Chem. latest articles - Fri, 09/15/2017 - 10:23

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY01203A, PaperA. Werner, V. Schmitt, G. Sebe, V. Heroguez
Surfactant-free micro- and nanolatexes from Pickering emulsions stabilized by acetylated cellulose nanocrystals (CNCs).
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Categories: Polymer Science News

Entirely Recombinant Protein-Based Hydrogels for Selective Heavy Metal Sequestration

RSC - Polym. Chem. latest articles - Wed, 09/13/2017 - 07:50
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01206C, PaperSongzi Kou, Zhongguang Yang, Jiren Luo, Fei Sun
Materials that can adsorb heavy metal ions with high efficiency and selectivity hold great promise for green mining and environmental remediation. Here we present a strategy for synthesizing hydrogel-based heavy...
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Categories: Polymer Science News

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