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

Research output: Contribution to journalArticle

13 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 languageEnglish
Article number021807
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume85
Issue number2
DOIs
Publication statusPublished - 2012 Feb 27

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Structural Change
liquids
Liquid
Range of data
pressure dependence
Polymer Melts
x ray diffraction
X-ray Diffraction
Diffraction
polymers
diffraction
Molecules
molecules

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt. / Chiba, Ayano; Funamori, Nobumasa; Nakayama, Kazuya; Ohishi, Yasuo; Bennington, Stephen M.; Rastogi, Sanjay; Shukla, Anuj; Tsuji, Kazuhiko; Takenaka, Mikihito.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 85, No. 2, 021807, 27.02.2012.

Research output: Contribution to journalArticle

Chiba, Ayano ; Funamori, Nobumasa ; Nakayama, Kazuya ; Ohishi, Yasuo ; Bennington, Stephen M. ; Rastogi, Sanjay ; Shukla, Anuj ; Tsuji, Kazuhiko ; Takenaka, Mikihito. / Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt. In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 2012 ; Vol. 85, No. 2.
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