Diffusion and Permeation of Gas and Vapors in Polymers

Abstract

The diffusion of gases and vapors in polymers and the permeability of polymers to gases and vapors are not only of practical significance in packaging and coatings but may also be used to demonstrate the kinetic agitation of the diffusate and the permeate molecules. The diffusion process, such as the dissolution of a polymer in a solvent; the plasticization of a polymer, such as polyvinyl chloride (PVC); and the passing of gases through films, is dependent on random jumps and hole filling by small diffusate molecules.