Solubilities and diffusion coefficients of carbon dioxide in poly(vinyl acetate) and polystyrene

Yoshiyuki Sato, Tadao Takikawa, Shigeki Takishima, Hirokatsu Masuoka

Research output: Contribution to journalArticle

255 Citations (Scopus)

Abstract

Solubilities of carbon dioxide in poly(vinyl acetate) (PVAc) were measured at temperatures from 313.15 to 373.15 K and pressures up to 17.5 MPa. Diffusion coefficients of carbon dioxide in PVAc were also measured at 313.15 K and pressures up to 7 MPa. Solubilities and diffusion coefficients of carbon dioxide in molten polystyrene (PS) were studied at temperatures from 373.15 to 473.15 K and pressures up to 20 MPa. An apparatus using a magnetic suspension balance (MSB) was constructed for the measurements. The solubilities in the PVAc and the PS were in good agreement with literature data. The solubility in both polymers were correlated with the Sanchez and Lacombe equation of state to within an average relative deviation of 3.6 and 1.6% for PVAc and PS systems, respectively. The diffusion coefficients in PS were correlated with free volume theory of Kulkarni and Stern to within 10% of relative average deviation.

Original languageEnglish
Pages (from-to)187-198
Number of pages12
JournalJournal of Supercritical Fluids
Volume19
Issue number2
DOIs
Publication statusPublished - 2001 Mar 6

Keywords

  • CO
  • Diffusion coefficient
  • Poly(vinyl acetate)
  • Polystyrene
  • Solubility

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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