Abstract
The polymers of three tertiary aminostyrenes: poly(N,N-dimethyl-4-vinylphenylamine), abbreviated as PPA; poly(N,N-dimethyl-4-vinylbenzylamine), PBA; and poly-(N,N-dimethyl-4-vinylphenethylamine), PPTA, were prepared via anionic polymerization in THF at −78°C. GPC measurement was carried out to estimate the molecular weights and molecular weight distributions (MWD) of the polymers. A mixture of THF and N-methylpyrrolidine (2 v/v%) was used as carrier solvent to avoid the adsorption of the polymers on the surface of the GPC gels. When n-butyllithium was used as an initiator, 100% polymer conversion was attained. The values of M̅w/M̅n were more than 1.20. The M̅n was equal to M̅k, calculated from the amounts of monomers and initiators. No polymer having narrow MWD was obtained, even when N-methylpyrrolidine was used as an additive. On the other hand, when cumyl potassium and cumyl cesium were used as initiators, polymers having narrow MWD were produced. The values of M̅w/M̅n were less than 1.08. The apparent rate constant of polymerization of cumyl cesium for PPA was small, compared with those for PBA and PPTA.
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Se, K., Kijima, M. & Fujimoto, T. Anionic Polymerization of Tertiary Aminostyrenes and Characterization of the Polymers. Polym J 20, 791–799 (1988). https://doi.org/10.1295/polymj.20.791
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DOI: https://doi.org/10.1295/polymj.20.791
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