화학공학소재연구정보센터
Journal of Chemical Engineering of Japan, Vol.45, No.6, 441-443, 2012
Enhanced Solvent Drying of Liquid Film Coatings by Fluorine-Base Polymeric Surfactant Addition
The introduction of a fluorine-base polymeric surfactant has showed a 10% enhancement in solvent evaporation rates within a certain range of polymer concentrations in cellulose acetate butyrate (CAB)/methyl ethyl ketone (MEK) solutions. Weight loss measurements have revealed that the drying rate initially increased and subsequently decreased with increasing surfactant mass fractions (P). The normalized drying rates obey a single master curve, and show a peak at a blending ratio of P similar to 0.1. The results suggest that surfactant addition is a promising method for achieving higher solvent diffusion rates in liquids.