Solubility of hydrofluorocarbon (HFC-134a, HFC-152a) and hydrochlorofluorocarbon (HCFC-142b) blowing agents in polystyrene

Yoshiyuki Sato, Toru Iketani, Shigeki Takishima, Hirokatsu Masuoka

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)


Solubilities of blowing agents (HFC-134a, HCFC-142b, and HFC-152a) in polystyrene (PS) were measured at temperatures from 348 to 473 K and pressures up to 3.2 MPa with a volumetric method. For all conditions, the solubility of the blowing agents in PS decreased with increasing temperature. At a given temperature and pressure, the solubility of HFC-134a, HFC-152a, and HCFC-142b in PS increased in that order. Solubilities could be correlated with the Sanchez-Lacombe equation of state with temperature-dependent binary interaction parameters to within 3.4% average relative percent deviation. The temperature dependence of the Henry's constants, Kp, for the blowing agents were found to have a linear relationship between 1n(1/Kp) and (Tc/T)2, where Tc is the critical temperature of the blowing agent.

Original languageEnglish
Pages (from-to)1369-1375
Number of pages7
JournalPolymer Engineering and Science
Issue number6
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry


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