Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 52 Issue 17

Impact Factor: 3.543

ISI Journal Citation Reports © Ranking: 2012: 12/83 (Polymer Science)

Online ISSN: 1099-0518

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

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  1. Effects of polyethylene spacer length in polymeric electrolytes on gelation of ionic liquids and ionogel properties

    Jun'ichi Nagasawa, Sonoko Wakahara, Hajime Matsumoto, Hideyuki Kihara and Masaru Yoshida

    Article first published online: 28 JUL 2014 | DOI: 10.1002/pola.27310

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    Positively charged polyelectrolytes with N,N′ -(trans-cyclohexane-1,4-diyl)dibenzamide linkages and varying spacer lengths have been synthesized and their ability to effect gelation for six ionic liquids and the properties of the resulting ionogels have been examined. The polymers gelatinize most of the tested ionic liquids at low concentrations (0.9-50 g/L). Gel-sol transition temperatures are dependent on the spacer length, while ionic conductivities of the various ionogels are near those of the neat ionic liquids and are not affected by spacer length.

  2. Poling and crosslinking processes in NLO polymers

    William K. Bell, Brandon M. Rawlings, Brian K. Long, R. Chad Webb, B. Keith Keitz, Lukas Häußling and C. Grant Willson

    Article first published online: 25 JUL 2014 | DOI: 10.1002/pola.27298

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    A series of photocrosslinkable nonlinear-optical polymers was synthesized, poled and evaluated on the basis of the thermal stability of Second Harmonic Generation (SHG). Through the use of photoinitiation, greater control over the curing process was realized. Thermal stability increased with crosslinker substitution, and in some cases SHG was maintained well beyond the initial Tg.

  3. Poly(vinylphosphonate)s functionalized polymer microspheres via rare earth metal-mediated group transfer polymerization

    Jiming Yang, Yongjiu Liang, Stephan Salzinger, Ning Zhang, Dewen Dong and Bernhard Rieger

    Article first published online: 25 JUL 2014 | DOI: 10.1002/pola.27324

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    A facile and efficient method is demonstrated for the functionalization of polymer microspheres with biocompatible poly(vinylphosphonate)s via the combination of UV-induced photopolymerization and rare-earth metal catalyzed group transfer polymerization (GTP). The surface-initiated GTP leads to a constant and remarkably rapid weight gain of the microsphere, and the accumulated tension between polymer chains induces an unprecedented fracture of the microsphere for longer polymerization time.

  4. Self-healing of poly(propylene oxide)-polybenzoxazine thermosets by photoinduced coumarine dimerization

    Baris Kiskan and Yusuf Yagci

    Article first published online: 25 JUL 2014 | DOI: 10.1002/pola.27323

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    A self-healing strategy for poly(propylene oxide)s bearing coumarine-benzoxazine units (PPO-CouBenz)s based on light induced coumarine dimerization reactions is described. The coumarine groups present in the structure undergo efficient dimerization upon irradiation at λ > 300 nm as confirmed by the UV–Vis spectral investigations. Photoinduced healing of coumarin based cured PPO-CouBenz polymer films was investigated.

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    Kilogram scale inverse vulcanization of elemental sulfur to prepare high capacity polymer electrodes for Li-S batteries

    Jared J. Griebel, Guoxing Li, Richard S. Glass, Kookheon Char and Jeffrey Pyun

    Article first published online: 25 JUL 2014 | DOI: 10.1002/pola.27314

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    Synthetic conditions to prepare high sulfur content copolymers via inverse vulcanization on a kilogram scale is reported. By investigation of polymerization comonomer feed ratios, reaction temperature, and scale, the development of conditions to enabled the large scale synthesis of poly(sulfur-random-(1,3-diisopropenylbenzene) was conducted. We further demonstrated enhanced device performance of these sulfur copolymers as active cathode materials in Li-S batteries.

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