COMMENT ON THEORIES OF INTERFACIAL-TENSION OF POLYMERIC INTERFACES

A simple scaling argument is shown to give the correction to the interfacial tension of two infinite-molecular-weight immiscible homopolymers arising from the translational entropy of finite-sized chains. It is suggested that the qualitative nature of the Flory-Huggins model, as shown by Binder and coworkers, precludes meaningful detailed comparison of experimental data with current theoretical expressions for the interfacial tension.