Raman spectroscopic investigation of the phase behavior and phase transitions in a poly(methyl methacrylate)-carbon dioxide system

Masayoshi Takahashi, Yoshitaka Yamamoto, A. Victoria Nawaby, Y. Paul Handa

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Laser Raman spectroscopy, in conjunction with an optical high-pressure cell, was used to investigate the poly(methyl methacrylate)-carbon dioxide systems. The Raman shifts associated with carbon dioxide molecules in the gas phase and those dissolved in the polymer were used to derive sorption kinetics of carbon dioxide and the carbon dioxide-induced phase changes in the polymer. Measurements were made in the temperature and pressure ranges in which this system is known to exhibit retrograde vitrification behavior. The Raman results on the sorption kinetics and on the onset of plasticization were in agreement with those obtained by gravimetric and calorimetric techniques, respectively. This technique provides a versatile and rapid way of characterizing polymer-gas systems and information that so far has been obtainable only through painstaking and time-consuming techniques.

Original languageEnglish
Pages (from-to)2214-2217
Number of pages4
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume41
Issue number18
DOIs
Publication statusPublished - 2003 Sep 15
Externally publishedYes

Keywords

  • Gas
  • Phase behavior
  • Phase transitions
  • Polymers
  • Raman spectroscopy
  • Sorption kinetics
  • Thermoplastics

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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