Summary
Radical polymerization of methyl methacrylate (MMA) in the presence of methyl α-(bromomethyl) acrylate yielded poly-(MMA) bearing the 2-methoxycarbonylallyl end group through chain reaction involving bimol ecular termination. The molecular weight of the resultant polymer was effectively controlled with a small amount of the bromomethylacrylate added; the chain transfer constant was estimated to be 0.9. The poly (MMA) with the unsaturated end group (
n= 2800 and
w/
n = 1.39) was used as a macromonomer for copolymerization with various monomers. The monomer mixture containing styrene and less than 10 mole-% of the macromonomer produced a corresponding copolymer. Copolymers with non-conjugated monomers were also obtained. The macromonomer was less reactive toward poly (MMA) radical than poly (styrene) radical. The radical produced by an addition of poly (styrene) radical to the macromonomer was detected using ESR spectroscopy at room temperature.
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Yamada, B., Kato, E., Kobatake, S. et al. Preparation of poly(methyl methacrylate) macromonomer by radical polymerization in the presence of methyl α-(bromomethyl)acrylate and copolymerization of the resultant macromonomer. Polymer Bulletin 25, 423–430 (1991). https://doi.org/10.1007/BF00310232
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DOI: https://doi.org/10.1007/BF00310232