Experimental Study of Thermal Diffusion in Dilute Solutions of High Polymers

Abstract

Ham [J. Appl. Phys. 31, 1853 (1960) (preceding paper)] has derived a simplified theory for thermal diffusion in dilute solutions of high polymers. It is of interest to apply this theory to two different types of polymer solutions: (a) dilute solutions in a good solvent, and (b) dilute solutions in a poor solvent. By studies of the concentration, temperature, and molecular weight dependence of the thermal diffusion ratio in these two different types of polymer solutions, it has been possible to obtain a detailed test of the theory.