Abstract
AbstractThe strong Brønsted acid‐promoted group transfer polymerization (GTP) of N,N‐dimethylacrylamide (DMAA) using trifluoromethanesulfonimide (Tf2NH) and 2,3,4,5,6‐pentafluorophenyl‐1,1‐bis(trifluoromethanesulfonyl)methane (Tf2CHC6F5) was carried out to quantitatively evaluate the effect of the counter anions for the employed acid on the kinetics and the stereoregularity of the polymerization. The equilibrium constant for the monomer activation (K) and the rate constant for the propagation reaction (kp) were determined from the integrated rate equation derived from the presumed polymerization mechanism. Both of the constants for the polymerization using Tf2CHC6F5 were higher than those for Tf2NH. The activation parameters for the syndiotactic propagation were determined from the Fordham plot.
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