Journal of Polymer Science Part B: Polymer Physics

Cover image for Vol. 53 Issue 5

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. Synthesis and characterization of polylactides with different branched architectures

    Sahar Nouri, Charles Dubois and Pierre G. Lafleur

    Article first published online: 28 JAN 2015 | DOI: 10.1002/polb.23665

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    Chain architecture significantly affects polymer properties. In comparison with linear polylactide (PLA), synthesized PLAs with star-shaped, comb-like and hyperbranched structures reveal higher crystallinity and faster crystallization. Optical microscopy observations confirm almost no crystallinity for linear PLA while hyperbranched PLA develops a high number of large spherulites at similar conditions. Moreover, contrary to linear PLA, strain hardening in extensional flow of branched structures is another major difference originated from chain architecture.

  2. Fabrication of highly ordered porous membranes of cellulose triacetate on ice substrates using breath figure method

    Bing Yu, Hailin Cong, Zejing Li, Hua Yuan, Qiaohong Peng, Ming Chi, Shujing Yang, Ruixia Yang, S. Ranil Wickramasinghe and Jianguo Tang

    Article first published online: 28 JAN 2015 | DOI: 10.1002/polb.23667

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    Highly ordered porous membranes of cellulose triacetate (CTA) were prepared successfully on ice substrates using breath figure method. The pore size and structure of the membrane were modulated by changing CTA concentrations and substrate materials. The ordered porous CTA membrane was not only used for microfiltration, but also used for fabrication of functional microstructures.

  3. Preparation and characterization of covalently bonded PVA/Laponite/HAPI nanocomposite multilayer freestanding films by layer-by-layer assembly

    Wenchen Ren, Ronglan Wu, Pingping Guo, Jinlong Zhu, Huili Li, Shimei Xu and Jide Wang

    Article first published online: 14 JAN 2015 | DOI: 10.1002/polb.23666

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    Covalent bonding of nano-inorganics with polymers has a reinforcing effect on the physical and chemical properties of the materials. Hydrophilic aliphatic polyisocyanate (HAPI) was introduced to fabricate Layer-by-Layer multilayer nanocomposite films with inorganic nanoplatelets (Laponite) and polyvinyl alcohol (PVA). HAPI can covalently bond Laponite and PVA by the reaction between isocyanate and hydroxyl groups. The resulting films showed enhanced mechanical and optical properties compared with films without HAPI.

  4. Flexible, stretchable, and patchable organic devices integrated on freestanding polymeric substrates

    Ju-Hyung Kim, Moon Jong Han and Soonmin Seo

    Article first published online: 13 JAN 2015 | DOI: 10.1002/polb.23662

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    While flexible electronics have attracted great interest over the past few decades, much of the research has been focused on inorganic devices due to the relatively low environmental stability of organic materials. In this work, an electrical circuit composed of organic devices on a highly flexible, stretchable, and patchable freestanding polymeric substrate is realized. The results strongly suggest potential for the development of various stretchable and patchable devices and integrated circuits, which can lead to their further applications in many fields of science and engineering.

  5. Effects of aromatic regularity on the structure and conductivity of polyimide-poly(ethylene glycol) materials doped with ionic liquid

    Elyse Coletta, Michael F. Toney and Curtis W. Frank

    Article first published online: 13 JAN 2015 | DOI: 10.1002/polb.23664

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    Poly(ethylene glycol)-aromatic polyimide systems can vary in structure depending on the aromatic monomers and the synthesis solvent used. By using different aromatic dianhydrides, aromatic diamines, and synthesis solvent the amount and type of nanometer scale order can be tuned. These compositional and process changes manifest as structural variation which impact rigidity and ultimately conductivity by 30% or more with transport being inversely related to rigidity.

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