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The polymerization of phenyl methacrylate, benzyl methacrylate, 1‐naphthyl methacrylate, and 1‐naphthylmethyl methacrylate is investigated. Under equal conditions (temperature and initiator concentration) the polymerization rate in solution decreases with the increase of the electron donating capacity of the aromatic ring. From the temperature dependence of the overall polymerization rate constants, the overall activation energy is calculated. With the increase of the electron donating capacity of the aromatic ring, the energy increases. The results are explained by assuming a π‐complex formation between the aromatic rings and the electron accepting methacrylic double bonds.
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Boudevska et al. (1971) studied this question.
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