Interpenetrating Polymer Networks and Related Topological Isomers

ABSTRACTWe have studied the phase compatibility of simultaneous interpenetrating polymer networks poly (2,6–dimethyl–l,4–phenylene oxide) with a number of other polymer networks as a function of their solubility parameters. Even when the blends of the corresponding linear chain polymers are immiscible their interpenetrating polymer networks can be miscible in all proportions. We have also prepared the corresponding pseudo (or semi) interpenetrating polymer networks where one component is linear and in one system the polymeric catenanes. All these systems generally show microphase separation.