PREPARATION OF AZO FUNCTIONAL POLY(ISOBUTYL VINYL ETHER) OLIGOMERS AND BLOCK-COPOLYMERS VIA COMBINATION OF LIVING CATIONIC AND CONDENSATIONPOLYMERIZATION
U. Tunca, PREPARATION OF AZO FUNCTIONAL POLY(ISOBUTYL VINYL ETHER) OLIGOMERS AND BLOCK-COPOLYMERS VIA COMBINATION OF LIVING CATIONIC AND CONDENSATIONPOLYMERIZATION, Polymer, 36(20), 1995, pp. 3955-3961
This paper reports the synthesis and characterization of azo functiona
l poly(isobutyl vinyl ether) oligomers and block copolymers containing
poly(isobutyl vinyl ether) and oligoesterdiol segments. Isobutyl viny
l ether was polymerized using a trifluoromethanesulfonic acid/tetrahyd
rothiophene initiating system in dichloromethane at -30 degrees C, and
quantitatively terminated with labile azo compounds to give poly(isob
utyl vinyl ether) with well-defined molecular weight and end-groups. A
lso, diblock copolymers with poly(isobutyl vinyl ether) and oligoester
diol segments were synthesized by termination of living, cationically
polymerized isobutyl vinyl ether with oligoesterdiol.