DISPERSION COPOLYMERIZATION OF STYRENE AND N-VINYL CARBAZOLE IN POLAR SOLVENTS.

Copolymer microspheres consisting of styrene and N-vinyl carbazole (NVC) have been prepared by dispersion polymerization. The effects of various polymerization parameters on the particle size were systematically studied. The particle size increased with the decrease of the system's initial solubility parameter and stabilizer concentration. When a small amount of inhibitor was added into the system, the particle size notably increased and the particle size distribution widened. The ratio of styrene to NVC in the monomer mixture had no obvious effect on particle size. The amount of NVC in the copolymers increases with the increase of NVC in the monomers. [ABSTRACT FROM AUTHOR]