The internal pressure in thin polymer layers in contact with liquids

Abstract

The broad applications of thin solid polymer layers in different branches of industry are implying also a specific characteristic of their quality and external arrangement. Thin polymer coatings of controlled composition, morphology, mechanical and all internal properties, are strongly dependent on thein thermodynamic properties. Especially, when they are connected with liquids. For this reason, there are described some principial kinetic data of swelling and dissolution with specific respekt to determination of internal pressure in solid layer for some synthetic and natural polymers (hydroxyethylcellulose, carboxymethylcellulose, poly(vinyl chloride), polyphenylene oxide,) from temperature dependence of total thickness of swollen surface layer (K. Ueberreiter, F. Asmussen, L. Valko and L. Lapcik).