Incompatibility and Phase Formation in Solid Polymer Mixures and Graft and Block Copolymers

Abstract

Compatibility in the sense of a tendency to molecular mixture and mutual solubility is rare for two solid polymeric components. Thus, not only mixtures but also graft and block copolymers constitute two phase systems. Possibilities for identification of separate phases are discussed, including optical methods and determination of freezing and melting temperatures of the individual phases. Problems of preparation of two phase mixtures and the phase distribution arising thereby, including identification of disperse and continuous phases are discussed. Examples are given of little known polymer mixtures for which complete or partial compatibility exists.

Characterization and pervaporation of chlorinated hydrocarbon-water mixtures with fluoroalkyl methacrylate-grafted PDMS membrane

“…Graft and block copolymers, compared to mixtures of the corresponding polymers, often make it possible to join incompatible polymers in that form. 23 Graft polymerization is a method of conducting the growth of the graft chain by polymerization, starting with reactive radicals produced in the membrane. 24,25 Generally, a vinyl monomer has been used in graft polymerization.…”

Polymer Blends: Phase Behavior and Property Relationships

“…Prior to 1975, the scientific literature on polymer blends was dominated by three key papers (1)(2)(3), which are still frequently referenced and quoted.…”

Concentrated Solutions, Phase Separation Behavior, and Diffusion

“…Prior to the 1970s the scientific literature on polymer blends was dominated by the idea that polymer-polymer miscibility would always be the rare exception (15)(16)(17)(18). This was based on numerous experiments, and the theoretical work of Scott (18).…”