Journal of Polymer Science Part B: Polymer Physics

Cover image for Vol. 53 Issue 12

Online ISSN: 1099-0488

Associated Title(s): Journal of Polymer Science Part A: Polymer Chemistry

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Publishes papers on the physics of polymers, including applications, theory and modeling and experiments. 2013 ISI Impact Factor: 3.803.

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  1. Stress memory polymers

    Jinlian Hu, Bipin Kumar and Harishkumar Narayana

    Article first published online: 21 APR 2015 | DOI: 10.1002/polb.23726

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    Even though smart polymeric materials have been researched in many arenas in the past few decades, there are still opportunities to address their interesting behaviors. A stress–memory phenomenon of stimuli responsive polymers is reported in this article and a switch-spring-frame model is proposed to describe such behavior. The discovery reveals promising potential of such materials in many areas such as medical devices.

  2. Nanocomposite hydrogel consisting of Na-montmorillonite with enhanced mechanical properties

    Ting Li, Shuangfei Xiang, Piming Ma, Huiyu Bai, Weifu Dong and Mingqing Chen

    Article first published online: 21 APR 2015 | DOI: 10.1002/polb.23732

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    The participation of Na-montmorillonite (MMT) in hydrogels leads to the formation of a stretchable microcomplex structure by the ionic bands between network matrix and MMT platelets. The hydrogel showed extraordinary mechanical properties, with an increase in both the tensile modulus and ultimate stress with increasing MMT content.

  3. Fine structural analysis, formation of interfacial particle films, and accurate estimation of orientation in polyguanamine derivatives with a high refractive index

    Atsuhiro Fujimori, Shuntaro Miura, Takahiro Kikkawa and Yuji Shibasaki

    Article first published online: 19 APR 2015 | DOI: 10.1002/polb.23728

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    Precise analyses of the molecular arrangement of three-dimensional crystals, two-dimensional molecular films, and interfacial particle layers of polyguanamine derivatives with a high refractive index have been performed. The π-conjugated molecular plane in the two-dimensional films is densely stacked. Polymer nanoparticles are formed by the integration of units of the collapsed polymer monolayer. This folding occurs the amorphous region. Formation of fine particles and their integrated films with densely packed π-conjugated planes is feasible.

  4. Degradation mechanisms of polyfluorene-based organic semiconductor lasers under ambient and oxygen-free conditions

    Philipp Brenner, Lena-Maria Fleig, Xin Liu, Alexander Welle, Stefan Bräse and Uli Lemmer

    Article first published online: 16 APR 2015 | DOI: 10.1002/polb.23733

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    The degradation mechanisms of polyfluorenes in organic laser devices are investigated with various analytical methods. Incorporation of an increasing amount of benzothiadiazole units within the conjugated polymer decreases the rate of photo-oxidation. Chain scission and cross-linking is observed during degradation in an oxygen-free condition and might also be the dominant degradation factor in air.

  5. “Green polyethylene” and Curauá Cellulose nanocrystal based nanocomposites: Effect of vegetable oils as coupling agent and processing technique

    Daniele Oliveira de Castro, Elisabete Frollini, Adhemar Ruvolo-Filho and Alain Dufresne

    Article first published online: 11 APR 2015 | DOI: 10.1002/polb.23729

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    An investigation of the state of the art of polymer science dealing with renewable resources reveals a boom of research activities worldwide. In this context, the aim of the present work was to contribute to the development of materials that release less CO2 into the atmosphere during their production. In this work, seeking to improve the performance of biopolyethylene nanocomposites reinforced with curauá cellulose nanocrystals, vegetable oils were added to the matrix as a coupling agent.

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