Advances in Heterophase Copolymer Synthesis via Living Polymerizations.

摘要

The controlled synthesis of heterophase or multiphase block, graft, ionomeric and segmented copolymers is an area of great academic and industrial interest. Research has been conducted in our laboratories via 'living' anionic, cationic, group transfer and ring opening methods. Functionalized oligomers have also been synthesized by living and cyclic equilibration techniques. The systems investigated have included hydrocarbon monomers, alkyl vinyl ethers, methacrylates, siloxanes, and alkylene oxides. This paper will highlight our efforts in these areas. Leading references are also provided. Living polymerization reactions have been classically limited to the ionic organolithium systems. More recently, advances in our understanding of these reactions have expanded the number of polymerization mechanisms to include cationic, group transfer, ring opening and, in selected cases even radical polymerizations. (jes)