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Title: Strain- and temperature-induced polymorphism of poly(dimethylsiloxane)
Authors: Tosaka, Masatoshi  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-8016-8329 (unconfirmed)
Noda, Miki
Ito, Kazuta
Senoo, Kazunobu
Aoyama, Koki
Ohta, Noboru
Author's alias: 登阪, 雅聡
Keywords: Strain-induced crystallization
Conformation
Wide-angle X-ray diffraction
Network polymer
Skeletal structure
Silicone rubber
Issue Date: Nov-2013
Publisher: Springer Berlin Heidelberg
Journal title: Colloid and Polymer Science
Volume: 291
Issue: 11
Start page: 2719
End page: 2724
Abstract: Phase behavior of silica-filled poly(dimethylsiloxane) (PDMS) network was investigated by wide-angle X-ray diffraction (WAXD) under various strain ratio between room temperature and −100 °C, and anomalous polymorphic behavior was discovered. At room temperature, when sufficient strain was applied, PDMS network was found to transform into the mesomorphic phase from which only a pair of sharp equatorial reflections and faint meridional scattering were obtained in the WAXD pattern. At low temperature, PDMS network crystallized into one of three different crystal forms according to strain ratio. These crystal forms were denoted as α, transient, and β forms in the descending order of corresponding strain ratio. The mesomorphic phase at room temperature transformed into the crystalline α form by reducing temperature. There was an anomalous feature about the transition of the crystalline forms that the position of reflections in the WAXD pattern changed continuously and reversibly with strain between the α and the β forms through the transient form, while keeping the diffraction angles almost unchanged.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s00396-013-3044-4.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/192986
DOI(Published Version): 10.1007/s00396-013-3044-4
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