Abstract
The chain statistics for ditactic polymer is developed to the reversible double Markovian process. The NMR spectra of poly(methyl propenyl ether) cationically obtained with BF3·O(C2H5)2 and sulfuric acid–aluminum sulfate complex are analyzed according to these statistics, and the lack of erythro-meso structure is deduced in the polymer obtained with the former catalyst. Finally, two kinds of possible polymerization mechanisms are proposed for the cationic polymerization of cis-methyl propenyl ether with BF3·O(C2H5)2. One is that adding monomers open always in trans form but the attacks on monomers are random. The other is that adding monomers open randomly but the attacks on monomers cause the meso form.
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Chûjô, R., Kamei, M. & Nishioka, A. Microstructure of Poly(methyl propenyl ether). Polym J 3, 289–299 (1972). https://doi.org/10.1295/polymj.3.289
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DOI: https://doi.org/10.1295/polymj.3.289
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