Summary
The cationic polymerization of α-methylstyrene (α-MeSty) in liquid sulfur dioxide initiated by benzyl chloride and p-methoxybenzyl chloride was investigated at different temperatures. The p-methoxybenzyl chloride (p-MOBCl) was found to be effective in initiating α-MeSty polymerization while benzyl chloride yielded only traces of polymer under all conditions. Polymers with narrow molecular weight distribution were obtained indicating rapid exchange between p-MOBCl dormant species and the corresponding carbenium ion. The reaction seems to be controlled by termination.
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Rueda, J.C., Gomes, A.S. & Soares, B.G. Cationic polymerization of α-methylstyrene in liquid sulfur dioxide initiated by p-methoxybenzyl chloride. Polymer Bulletin 33, 405–409 (1994). https://doi.org/10.1007/BF00293483
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DOI: https://doi.org/10.1007/BF00293483