Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt

Ayano Chiba; Nobumasa Funamori; Kazuya Nakayama; Yasuo Ohishi; Stephen M. Bennington; Sanjay Rastogi; Anuj Shukla; Kazuhiko Tsuji; Mikihito Takenaka

doi:10.1103/PhysRevE.85.021807

Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt

Ayano Chiba, Nobumasa Funamori, Kazuya Nakayama, Yasuo Ohishi, Stephen M. Bennington, Sanjay Rastogi, Anuj Shukla, Kazuhiko Tsuji, Mikihito Takenaka

Department of Physics

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

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.

Original language	English
Article number	021807
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	85
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevE.85.021807
Publication status	Published - 2012 Feb 27

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Statistics and Probability
Condensed Matter Physics

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10.1103/PhysRevE.85.021807

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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.",

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AU - Chiba, Ayano

AU - Funamori, Nobumasa

AU - Nakayama, Kazuya

AU - Ohishi, Yasuo

AU - Bennington, Stephen M.

AU - Rastogi, Sanjay

AU - Shukla, Anuj

AU - Tsuji, Kazuhiko

AU - Takenaka, Mikihito

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AB - 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.

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Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt

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