Abstract tert‐Butyl methacrylate was polymerized with Grignard reagent, benzoyl peroxide, and gamma rays as initiator. The infrared spectra of the polymers indicated that the polymer polymerized with Grignard reagent had an isotactic stsucture and those polymerized with benzoyl peroxide and gamma rays had syndiotactic structures. Hydrolysis of polymethyl methacrylates and poly‐tert‐butyl methacrylates with hydroiodic acid was attempted, and differences in the infrared spectra of the polymethacrylic acids obtained due to stereoregularity were discussed. No difference in the demethylation behavior due to stereoregularity of polymethyl methacrylates was observed. Heat treatment of polymethacrylic acids and poly‐tert‐butyl methacrylates showed that isotactic polymers form polymer anhydride faster than syndiotactic polymers.
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Matsuzaki et al. (1964) studied this question.
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