Abstract
The radical copolymerizations of N-(4-substituted phenyl)citraconimide (RPhCI, R= –H, –OCH3, –CH3, –Cl, –OCOCH3, –COOC2H5) (M1) with styrene (ST) (M2) or methyl methacrylate (MMA) (M2) were carried out at 60°C, using azobisisobutyronitrile as the initiator in tetrahydrofuran. The purpose of this was to clarify the substituent effect on the copolymerizations. The modified Hammett equation, log(1/r2)=ρσ+γER, was applied to these copolymerizations and linear relations were obtained for ρ=0.18, γ=0 in the RPhCI–ST system and ρ=0, γ=0.4 in the RPhCI–MMA system. A non-linear correlation between e1 values of RPhCI and σ constants of the substituents was found to exist. It was also found that the Q1 values of RPhCI were independent of the ER constants of the substituents.
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Oishi, T. Radical Copolymerizations of N-(4-Substituted phenyl)citraconimide with Styrene or Methyl Methacrylate. Polym J 12, 799–807 (1980). https://doi.org/10.1295/polymj.12.799
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DOI: https://doi.org/10.1295/polymj.12.799
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