Summary
Rapid living carbocationic polymerization of p-methylstyrene pMeSt is readily induced by a variety of esters i.e., cumyl acetate (CumOAc), cumyl propionate (CumOPr), 1(2,4,6-trimethylphenyl) ethyl acetate (TMePhEtOAc) and 1(4-methylphenyl) ethyl acetate (pMePhEtOAc) in the presence of BCl3 in CH3Cl and C2H5Cl solvents at −30° and −50°C using both the IMA and AMI techniques. The ¯Mn versus WPpMeSt plots are horizontal, indicating truly living kinetics. The molecular weight distributions are rather broad (¯Mw/¯Mn=2–5) suggesting slow initiation and/or slow exchange between dormant and living species relative to propagation.
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References
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Faust, R., Kennedy, J.P. Living carbocationic polymerization. Polymer Bulletin 19, 29–34 (1988). https://doi.org/10.1007/BF00255020
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DOI: https://doi.org/10.1007/BF00255020