SCATTERING PROPERTIES AND PHASE-BEHAVIOR OF MIXTURES OF CYCLIC AND LINEAR HOMOPOLYMERS AND COPOLYMERS

The static scattering properties and phase behavior of mixtures of hom opolymers and diblock copolymers are considered. The effects of archit ecture on these properties are investigated. In particular, the result s obtained for mixtures with cyclic homopolymers and copolymers are co mpared with those obtained in the case of mixtures of Linear chains. D epending on the concentration of copolymer, one may observe an interpl ay between macrophase and microphase separation transitions. This inte rplay is investigated for cyclic and Linear chain systems. Mixtures ma de of cyclic copolymers show enhancement of compatibility towards phas e separation. Phase diagrams are plotted to show the compatibilization . Effects of topological constraints on chain architecture and interac tions are ignored for cyclic chain systems.