Abstract
A series of acetic acid derivatives (RCOOH; R=CF 3 , CCl 3 , CHCl 2 , CH 2 CL, CH 3 ), coupled with ZnCl 2 , induced living cationic polymerization of isobutyl vinyl ether (IBVE) in toluene at 0 o C. The molecular weight distribution of the polymers was very narrow for R=CF 3 and CCl 3 ; it gradually broadened faster the reaction was. With a stronger Lewis acid activator (EtAlCl 2 ) in place of ZnCl 2 , a fast, conventional, nonliving polymerization occurred. These results were discussed on the basis of the nucleophilic interaction between the growing carbocation and the counteranion ( − OCOR...MX n )
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