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Title: Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt
Authors: Chiba, Ayano
Funamori, Nobumasa
Nakayama, Kazuya
Ohishi, Yasuo
Bennington, Stephen
Rastogi, Sanjay
Shukla, Anuj
Tsuji, Kazuhiko
Takenaka, Mikihito  kyouindb  KAKEN_id
Author's alias: 竹中, 幹人
千葉, 文野
船守, 展正
大石, 泰生
辻, 和彦
Issue Date: Feb-2012
Publisher: American Physical Society
Citation: Ayano Chiba, Nobumasa Funamori, Kazuya Nakayama, Yasuo Ohishi, Stephen M. Bennington, Sanjay Rastogi, Anuj Shukla, Kazuhiko Tsuji, and Mikihito Takenaka. Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt. Phys. Rev. E 85. 021807 (2012)
Journal title: Physical Review E
Volume: 85
Issue: 2
Thesis number: 021807
Abstract: High-pressure in situ x-ray diffraction and specific-volume measurements on isotactic poly(4-methyl-1-pentene) melt have uncovered abrupt changes in the pressure dependence of microscopic structure as well as that of macroscopic density. The first sharp diffraction peak of the polymer melt, which is related to the intermediate-range order and is explained as resulting from the correlations between main chains, is suppressed at pressures less than 1 kbar. These changes in intermediate-range order show similarities to those seen in liquid-liquid or amorphous-amorphous transitions in simpler small molecule based systems, suggesting that this kind of phenomenon may occur in a wide range of materials.
Description: 溶融高分子の新しい構造変化を発見-加圧によるナノスケールの構造変化-. 京都大学プレスリリース. 2012-02-28.
Rights: ©2012 American Physical Society
DOI(Published Version): 10.1103/PhysRevE.85.021807
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