Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 56 Issue 2

Impact Factor: 3.113

ISI Journal Citation Reports © Ranking: 2014: 18/82 (Polymer Science)

Online ISSN: 1099-0518

Associated Title(s): Journal of Polymer Science Part B: Polymer Physics

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  1. Nonvolatile resistive memory devices based on ferrocene-terminated hyperbranched polyimide derived from different dianhydrides

    Haiwei Tan, Huaxuan Yu, Ying Song, Shiyang Zhu, Bo Zhang, Hongyan Yao and Shaowei Guan

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/pola.28920

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    A series of ferrocene-terminated hyperbranched polyimides (HBPI-Fcs) were synthesized from a tetra-amine and various dianhydrides and followed by terminated with (4-amino) phenyl ferrocene. All the memory devices based on HBPI-Fc exhibited bipolar WORM behavior and the threshold voltage can be tuned by the chemical structure of the dianhydride.

  2. Careful investigation of the hydrosilylation of olefins at poly(ethylene glycol) chain ends and development of a new silyl hydride to avoid side reactions

    Hyunseo Shin and Bongjin Moon

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/pola.28924

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    Based on the careful analysis of hydrosilylation reactions of allyl-functionalized PEG with Karstedt catalyst, this research has elucidated that the inherently low concentration of the olefin group—due to its presence at polymer chain ends—decreases the hydrosilylation reaction relative to undesired side reactions such as olefin isomerization. To avoid this problem, weakly coordinating hydrosilanes were devised and employed to enhance the hydrosilylation selectivity over the undesired isomerization side reaction.

  3. Poly(N-vinyl imidazole) grafted silica nanofillers: Synthesis by RAFT polymerization and nanocomposites with polybenzimidazole

    Satyanarayana Raju Kutcherlapati, Rambabu Koyilapu and Tushar Jana

    Version of Record online: 8 DEC 2017 | DOI: 10.1002/pola.28917

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    A new and simple strategy to make nanofiller with surface anchored polymeric chain for the use in developing efficient proton exchange membrane.

  4. Preparation of Cross-Linked Micelles from Glycidyl Methacrylate Based Block Copolymers and Their Usages as Nanoreactors in the Preparation of Gold Nanoparticles

    Gökhan Kocak, Gökhan Solmaz, Zeynep Dikmen and Vural Bütün

    Version of Record online: 7 DEC 2017 | DOI: 10.1002/pola.28922

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    Hydrophilic–hydrophobic block copolymers, namely poly(ethylene glycol)methyl ether-block-poly(glycidyl methacrylate) and poly(ethylene glycol)methyl ether-block-poly(glycidyl methacrylate)-block-poly(methyl methacrylate), have been synthesized to form core–shell micelles with cross-linkable cores in aqueous media. Their cross-linking processes have been succeeded via ring-opening reactions of epoxy residues with bifunctional cross-linkers such as diamines. Resulted cross-linked micelles (CLMs) have been successfully used as nanoreactors for gold nanoparticle production. These CLM stabilized gold nanoparticles have exhibited good catalytic activity in the reduction of p-nitrophenol to p-aminophenol.

  5. Moisture-mediated intrinsic self-healing of modified polyurethane urea polymers

    Anastassija Wittmer, Andreas Brinkmann, Volkmar Stenzel, Andreas Hartwig and Katharina Koschek

    Version of Record online: 7 DEC 2017 | DOI: 10.1002/pola.28925

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    Polyurethane/urea-based polymers provide a huge number of hydrogen bonds and show moisture-mediated self-healing after damage at high relative humidity. Water molecules are able to interact through hydrogen bond interactions with the polymeric chains interrupting the chain–chain interactions for more freedom of movement for the self-healing process. IR-spectroscopy was used to simultaneously observe the destruction of chain–chain hydrogen bond interactions and the formation of strong interactions between heavy water molecules and the polymeric chains.

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