Abstract
Homopolymerizations of N-(4-substituted phenyl)itaconimide (RPhII) (R=H, CH3, Cl, OCH3, OCOCH3, COOC2H5) were carried out at 60°C by using azobisisobutyronitrile (AIBN) as an initiator in tetrahydrofuran. The initial rate of the polymerization was Rp=k[AIBN]0.5–0.6 [RPhII]1.0–1.3, where k is rate constant. The overall activation energies (E) and frequency factors (A) for RPhII were E=16.1—20.9 kcal mol−1, A=3.1×107—5.6×1010 s−1. Also, radical copolymerizations of RPhII (M1) with styrene (M2) were carried out at 60°C in tetrahydrofuran in order to clarify the substituent effect on the copolymerization. Hammett’s equation, log (1/r2)=ρσ, was applied to this copolymerization and a linear relationship was obtained for ρ=−0.33. Further observation showed that the Q1 values of the monomers are inversely proportional to σ-constants of the substituents.
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Oishi, T. Polymerizations and Copolymerizations of N-(4-Substituted phenyl)itaconimides. Polym J 12, 719–727 (1980). https://doi.org/10.1295/polymj.12.719
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DOI: https://doi.org/10.1295/polymj.12.719
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