Abstract
The cationic polymerization of 2-chloroethyl vinyl ether and p-methoxystyrene was studied in the presence of tetra-n-butylammonium salts such as n-BU4NClO4, n-BU4NBF4, and n-Bu4NI. The polymerization was carried out using iodine as a catalyst at 0°C in methylene chloride, benzene–methylene chloride mixture, and nitrobenzene. The presence of n-BU4NClO4 and n-BU4NBF4 brought about an acceleration in reaction rates and an increase in the molecular weight of the polymers. A notable example was that the polymerization rate in the presence of n-Bu4NClO4 was 3×104 times faster than in the absence of the salt. The results of the experiment were explained by the presence of more than one counter-ion in the polymerization systems.
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Masuda, T., Miki, Y. & Higashimura, T. Cationic Polymerization of Vinyl Compounds in the Presence of Tetra-n-butylammonium Salts. II. Polymerization Catalyzed by Iodine. Polym J 3, 724–728 (1972). https://doi.org/10.1295/polymj.3.724
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DOI: https://doi.org/10.1295/polymj.3.724
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