Kinetics of growth of polyvinylchloride (PVC) films

Abstract

Polyvinylchloride (PVC) films have been grown by isothermal immersion of rocksalt, copper and glass substrates into dilute solutions of PVC in 80% benzene + 20% acetone (B+A) and cyclohexanone solvents. The dependence of the kinetics of growth of the films on the concentration and temperature of the solution and the nature of the solvent and substrate has been studied. The initial growth of the films in all cases occurs at a rapid rate which quickly decreases to yield a characteristic limiting or equilibrium thickness of the film. The salient features of the growth behaviour, the cessation of growth of a film and its resumption on a modified film surface have been explained in terms of an adsorption controlled multiple nucleation model.