Abstract
Three polymers of 1-butadienyloxytrimethylsilane (BdTMS), 3-methyl-1-butadienyloxytrimethylsilane (MeBdTMS), and 3-phenyl-1-butadienyloxytrimethylsilane (PhBdTMS) were prepared by aldol condensation-type group transfer polymerization. Microstructures of these polymers were determined by 1H and 13C NMR. Content of trans-1,4 unit in poly(BdTMS), poly(MeBdTMS), and poly(PhBdTMS) decreased in that order, reflecting s-conformation of monomer. The results suggest that this polymerization proceeds via a bicyclic transition state made up of a monomer, propagating chain end, and catalyst. Poly(BdTMS) contained 14% a 3,4 unit, but poly(MeBdTMS) and poly(PhBdTMS) did not. This suggests that formation of the 3,4 unit depends on the structure of propagating chain end.
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Sumi, H., Haraguchi, K., Inai, Y. et al. Microstructures of Poly(1-butadienyloxytrimethylsilane)s Prepared by Aldol Condensation-Type Group Transfer Polymerization. Polym J 27, 26–33 (1995). https://doi.org/10.1295/polymj.27.26
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DOI: https://doi.org/10.1295/polymj.27.26