TEMPERATURE DEPENDENCE OF DIFFUSION OF LIQUIDS IN POLYETHER RUBBERS

Abstract

The diffusion behaviour of toluene and cyclohexanone in polyether rubbers was studied by sorption method at various temperatures. The diffusion of these liquids followed the Arrhenius equation. The activation energies of diffusion of toluene in poly (epichlorohydrin) and poly (epichlorohydrin-co-ethylene oxide) were 3,830 cal/moe and 3,660 cal/mole respectively. For the diffusion of cyclohexanene the activation energies were 6,180 cal/mole and 5,720 cal/mole respectively. A slow diffusion process appeared to have a high activation energy