POLYFUNCTIONAL POLYISOBUTENES AS BUILDING-BLOCKS FOR AMPHIPHILIC GRAFT POLYMERS

Polyfunctional polyisobutenes (PIB) have been synthesized by cationic copolymerization of isobutene and chloromethylstyrene. Their potential applications with focus on their use as macroinitiators (MI) for oxaz oline polymerization were discussed. The ''grafting from'' reaction le d to tailor-made graft copolymers with various backbones and adjustabl e graft arm length. Graft copolymers with hydrophobic PIB backbone and poly(2-methyloxazoline) graft arms have unusual viscosity properties due to their amphiphilic character and show aggregate formation.