OPTIMIZATION OF FREE-VOLUME THEORY PARAMETERS FOR TERNARY POLYMERIC COATINGS FROM BINARY WEIGHT LOSS EXPERIMENTS

In this work free-volume parameters needed for polystyrene p-xylene-tetrahydrofuran coating and polymethylmethacrylate tetrahydrofuran ethylbenzene coatings were estimated by minimizing the difference between model predicted residual solvent and experimental residual solvent in binary coatings. Each ternary system needs two binary systems for example poly styrene-p-xylene-tetrahydrofuran system needs polystyrene-p-xylene and polystyrene tetrahydrofuran.