Sorption of organic vapors by polystyrene Academic Article uri icon


  • In the reported experiments, activity coefficients of benzene, toluene, cyclohexane, carbon tetrachloride, chloroform, and dichloromethane in binary solutions with polystyrene at 23. 5 degree C have been determined using a piezoelectric sorption apparatus. The weight-fraction activity coefficients ( OMEGA //1 equals a//1/w//1) of cyclohexane, toluene, and carbon tetrachloride in polystyrene solutions determined in this work agree within experimental error with previously published values determined by measurement of vapor pressure lowering and vapor absorption by thin films. The authors find disagreement, at low solvent concentrations, between their results for benzene and chloroform and previously published results. They have analyzed these results using Flory's version of corresponding-states polymer solution theory. The theory can account, qualitatively, for the cyclohexane and carbon tetrachloride results. It cannot account for the toluene, benzene, dichloromethane, or chloroform results.

author list (cited authors)

  • Saeki, S., Holste, J. C., & Bonner, D. C.

citation count

  • 29

publication date

  • February 1981