Synthesis and characterization of poly(N-tert-alkylmaleimide)s |
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Authors: | Takayuki Otsu Akikazu Matsumoto Atsushi Tatsumi |
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Affiliation: | (1) Department of Applied Chemistry, Faculty of Engineering, Osaka City University, Sugimoto, Sumiyoshi-ku, 558 Osaka, Japan |
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Abstract: | N-tert-Butylmaleimide (tBMI) polymerized readily in the presence of a radical initiator in spite of its bulky N-substituent to give a high molecular weight and less-flexible poly(substituted methylene). From kinetic investigation for the polymerization of tBMI with 2,2 -azobisisobutyronitrile (AIBN) in benzene, it was revealed that the rate of polymerization (R
p) was expressed as R
p=k AIBN]0.51tBMI]1.4, and the overall activation energy was 99.6 kJ/mol. The high polymerization of tBMI was assumed to result from the decrease in the rate of bimolecular termination between rigid polymer radicals bearing a bulky substituent. The flexibility of the polymer chain was examined by the viscometric and light scattering methods, and the effect on the polymerization reactivity was discussed. |
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