CORE-SHELL-POLYMERS BASED ON POLYMERIC AZO INITIATORS

Graft copolymers with core-shell morphology were synthesized by grafti ng from polymeric azo initiators, The core synthesis and the grafting reaction both were carried out in emulsion. Functionality and density of the core material as well as the structure and the thickness of the shell were varied to obtain a broad spectrum oi polymer properties. T he core-shell morphology was strongly favoured for highly crosslinked seed latex. The polymers were characterized by common analytical techn iques including gel permeation chromatography: differential scanning c alorimetry and electron microscopy. The dimensions oi the globular str uctures were determined by a disc centrifuge photometer.