Journal of Polymer Science Part B: Polymer Physics
Copyright © 2012 Wiley Periodicals, Inc., A Wiley Company
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.
Recently Published Articles
- Crystal transition from hydrated chitosan and chitosan/monocarboxylic acid complex to anhydrous chitosan investigated by X-ray diffraction
Philip-Kunio Naito, Yu Ogawa, Satoshi Kimura, Tadahisa Iwata and Masahisa Wada
Article first published online: 22 MAY 2015 | DOI: 10.1002/polb.23748
The hydrated form of chitosan crystal has higher stability compared to other polysaccharides such as cellulose and chitin. The two pathways to obtain anhydrous chitosan from hydrated chitosan were investigated using X-ray diffraction. The stability and transition mechanisms of hydrated chitosan against hydrothermal treatment are discussed. The transition of chitosan/monocarboxylic acid complex to anhydrous chitosan in high relative humidity only took place with the acetic acid complex.
- Effect of crosslinking polymer networks on the molecular reorientation and electro-optical performance of in-plane switching vertically aligned liquid crystal devices
Guan-Jhong Lin, Tien-Jung Chen, Ming-Jui Lee, Jin-Jei Wu, Kun-Yu Lai and Ying-Jay Yang
Article first published online: 19 MAY 2015 | DOI: 10.1002/polb.23744
Crosslinking polymer networks are developed on the glass substrate surface in a liquid crystal cell through the polymerization process, effectively increasing the anchoring energy and governing the liquid crystal molecular reorientation. With its stronger anchoring effect, the polymer network cell shows good light transmittance and excellent vertical alignment quality. Furthermore, the alignment transformation and transmittance bounce are eliminated when the cell is operated at high voltages. Around 36% improvement in the image response is successfully achieved at a low driving voltage.
- Machine prepared thermoplastic polyurethanes of varying hard segment content: Morphology and its evolution in tensile tests
Almut Stribeck, Farhad Jokari-Sheshdeh, Elmar Pöselt, Berend Eling, Pieter J. in't Veld, Günter Johannes Goerigk and Armin Hoell
Article first published online: 10 MAY 2015 | DOI: 10.1002/polb.23742
A small-angle X-ray scattering analysis in real space shows that machine-cast thermoplastic polyurethanes materials exhibit a peculiar sequence of hard and soft domain heights which is explained by excellent mixing of the raw materials and homogeneous synthesis. The detailed view on the morphology evolution during straining explains why the apparent long period is decreasing above a strain of approximately 0.6. Differences as a function of hard-segment content and processing are discussed.
- Critical fluctuations and static inhomogeneities in polymer gel volume phase transitions
Axel Habicht, Willi Schmolke, Günter Görigk, Frank Lange, Kay Saalwächter, Matthias Ballauff and Sebastian Seiffert
Article first published online: 10 MAY 2015 | DOI: 10.1002/polb.23743
Stimuli-responsive polymer gels react to changes in their surroundings by swelling and deswelling, making them attractive for applications in drug delivery, catalysis, sensing, and photonics. Thermoresponsive microgels with different internal polymer-network heterogeneity exhibit marked differences in their nanometer-scale concentration fluctuations at the gel volume phase transition point due to the coexistence of static spatial polymer-network heterogeneity and dynamic critical opalescence.
- Micromechanical fast quasi-static detection of α and β relaxations with nanograms of polymer
Sanjukta Bose, Silvan Schmid, Tom Larsen, Stephan Sylvest Keller, Anja Boisen and Kristoffer Almdal
Article first published online: 10 MAY 2015 | DOI: 10.1002/polb.23745
Microstring resonators have been used as an analytical tool for detecting α relaxation and secondary β relaxation temperatures of polymers. The advantage of using microstring resonators is their sensitivity to detect very subtle secondary relaxation with only few nanograms of sample, thus overcoming some of the limitations of conventional techniques. Thin films of polymers have been spray coated on the microstrings and the change in resonance frequency has been monitored to detect the relaxation temperatures.