Studies on suspension and emulsion. LIV. Shrinkage of polymer emulsion film having asymmetric porous structure

Abstract

SynopsisI t was found that the film cast on a glass plate from emulsifier-free ethyl acrylate-methyl methacrylate copolymer emulsion when separated from there shrank and curled immediately. This film had an "asymmetric" porous structure. It was discussed the relationship between the porous structure and the shrinkage due to the residual internal stress produced during film formation.