Effect of Plasticizer on the Drying of Poly (Styrene) - P-Xylene Polymeric Coatings

Abstract

The residual solvent study in poly (styrene) (PS) – p-xylene (PX) based system has been carried out. The effect of plasticizer: triphenyl phosphate (TPP), on the drying time, residual solvent %, coating thickness, solid/solvent concentrations in coatings of nearly 2000 μm and nearly 1300 μm has been investigated. Plasticizer loadings were changed from 0.52% to 2%. The residual solvent left was 2.62%, 2.50% , 2.49%, 2.87% and 1.35% in coatings having 0%, 0.52%, 1.02%, 1.51% and 2% TPP, respectively. The effect of plasticizer loading on the drying time was also investigated. Solutions with higher plasticizer concentrations took more time for drying but effective reduction in % residual PX was observed.