Functionalized thermo-responsive poly(vinyl ether) by living cationic random copolymerization of methyl vinyl ether and 2-chloroethyl vinyl ether

摘要

The living cationic random copolymerization of MVE and CEVE to obtain functionalized thermo-responsive PMVE as precursors for more complex PMVE-containing polymer structures is reported. The random copolymers P(MVE-co-CEVE) were synthesized at O degrees C in toluene using the DEE/TMSI/ZnI2 initiating system. The monomer reactivity ratios of these copolymers are determined according L to the extended Kelen-Tudos procedure: r(CEVE) = 0.48 +/- 0.04 r(MVE) = 0.76 +/- 0.05. The cloud point temperatures of the random copolymers are found to depend strongly on the composition of the copolymer and disappeared at CEVE contents above 3 mol-%.