SURFACE AND INTERFACIAL FTIR SPECTROSCOPIC STUDIES OF LATEXES .3. THE EFFECTS OF SUBSTRATE SURFACE-TENSION AND ELONGATION ON EXUDATION OF SURFACTANTS

This paper focuses on the effect of the substrate surface tension and mechanical elongation of EA/MAA latex films on the ionic and nonionic surfactant mobility. Although the mobility of anionic surfactants is inherently sensitive to the substrate surface tension, nonionic surfactants appear to remain uniformly distributed across the latex film. This behavior is attributed to the enhanced compatibility with the copolymer latex. Mechanical elongation of the latex films enhances surfactant exudation to the surface due to the increased surface energy of the film forcing surfactants to the latex surface.