Polymerization of alpha-acetylaminoacrylic acid was kinetically invest
igated in dimethylsulfoxide (DMSO) and aqueous DMSO. The polymerizatio
n conforms to a conventional radical equation (rule of square root), i
ndependently of pH. However, the polymerization rate is greatly depend
ent on pH: The rate decreases with pH increasing from 1 to 6 and shows
minimum value at pH = 6-7. After reaching a minimum, the rate increas
es slowly to a flat maximum. Copolymerization parameters r(1) = 0.53,
r(2) = 0.11, Q(1) = 2.43, and e(1) = 0.89 were obtained in the copolym
erization of alpha-acetylaminoacrylic acid (M-1) and styrene (M-2) in
DMSO. Effect of acetylamino group on the reactivities was discussed. (
C) 1998 Elsevier Science Ltd. All rights reserved.