Homopolymerisation von styrol mit titan(III)‐chlorid/alkylhalogenid‐initiatoren

Abstract

Abstract The polymerization of styrene initiated by titanium(III) chloride/alkyl halide redox systems was studied. Among the alkyl halides examined, the highest rate of polymerization was found in the system titanium(III) chloride/carbon tetrachloride. The polymerization rate can be described by the equation R p = k ·[Ti(III)] 0,5 ·[CCl 4 ] 0,5 ·[St] 1,0 . The polymerization proceeded via a radical mechanism. The overall activation energy was estimated as 57,3 kJ/mol. It was found that titanium(III) chloride/chloroacetic acid systems, too, could initiate the polymerization of styrene.