Journal of Polymer Science Part B: Polymer Physics

Cover image for Vol. 53 Issue 18

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. Revealing structure formation in PCPDTBT by optical spectroscopy

    Christina Scharsich, Florian S. U. Fischer, Kevin Wilma, Richard Hildner, Sabine Ludwigs and Anna Köhler

    Article first published online: 29 JUL 2015 | DOI: 10.1002/polb.23780

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    The low band-gap polymer PCPDTBT is shown to form H/J-type aggregates upon cooling a solution below 300K or upon increasing its concentration. Absorption and photoluminescence spectroscopy as well as Franck-Condon analyses indicate that such aggregates are also formed in thin films. In addition, a low percentage of thermally activated excimer states are present in the films at temperatures above 200 K.

  2. The outstanding ability of nanosilica to stabilize dispersions of Nylon 6 droplets in a polypropylene matrix

    Leire Sangroniz, Marco Antonio Moncerrate, Vladimir A. De Amicis, Jordana K. Palacios, Mercedes Fernández, Antxon Santamaria, Johan J. Sánchez, Fouad Laoutid, Philippe Dubois and Alejandro J. Müller

    Article first published online: 27 JUL 2015 | DOI: 10.1002/polb.23786

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    Nanosilica particles are excellent morphological stabilizers, effective in preventing coalescence regardless of the processing or post-processing technique involved. The silica nanoparticles create a rigid barrier along PP-PA interface that promotes a reduction in the droplet size and polydispersity. The increment in the non-linearity parameter Q measured under LAOS conditions evidences the interactions between nanosilica particles and the blend components.

  3. A convection–diffusion porous media model for moisture transport in polymer composites: Model development and validation

    Liangbiao Chen, Hsing-Wei Chu and Xuejun Fan

    Article first published online: 24 JUL 2015 | DOI: 10.1002/polb.23784

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    A convection-diffusion porous model is derived to characterize moisture transport in polymeric composites at high temperatures. The coupling of convection and diffusion is achieved by combining the law of conservation of mass, Darcy's law, the relation for liquid-vapor chemical equilibrium, and the ideal gas law. The proposed convection-diffusion model is more effective in interpreting moisture desorption that occurs in a very short time at high temperature. Vapor pressure evolution can also be predicted.

  4. Short-time elasticity of polymer melts: Tobolsky conjecture and heterogeneous local stiffness

    Sebastiano Bernini and Dino Leporini

    Article first published online: 24 JUL 2015 | DOI: 10.1002/polb.23783

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    On the picosecond time scale, the shear response of uncrosslinked polymer melts G(t) is local, heterogeneous, and mainly due to the bonds. As a consequence, the neighborhood of the end monomers is softer than the one of the inner monomers and the modulus is chain-length dependent. For intermediate times, G(t) approaches the relaxed plateau Gp, which does not depend on the chain length and is largely set by the non-bonding interactions.

  5. Poly((2-alkylbenzo[1,2,3]triazole-4,7-diyl)vinylene)s for organic solar cells

    Handan Akpinar, Şevki Can Cevher, Lang Wei, Ali Cirpan, Bryan M. Wong, Dhandapani Venkataraman and Paul M. Lahti

    Article first published online: 24 JUL 2015 | DOI: 10.1002/polb.23785

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    Poly{(2-alkylbenzo[1,2,3]triazole-4,7-diyl)vinylene}s (pBTzV polymers) synthesized with long straight-chain and branched-chain alkyl pendants show significant substituent effects on absorption spectra, morphology, ambipolar charge mobility, and on solar cell power conversion when used as active layer constituents with PC71BM. Overall, the results indicate that pBTzV and analogous electron-deficient poly(arylene vinylene)s are appropriate targets to develop for electronic material uses.

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