Synthesis and Polymerization of Optically Active N-α-Methylbenzylcitraconimide
作者:
Tsutomu Oishi,
Minoru Fujimoto,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1986)
卷期:
Volume 23,
issue 5
页码: 619-633
ISSN:0022-233X
年代: 1986
DOI:10.1080/00222338608058500
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Optically active N-α-methylbenzylcitraconimide (MBZCI) was prepared from citraconic anhydride and d-α-methylbenzylamine. The polymerizations of MBZCI were carried out with α,α′-azobisiso-butyronitrile (AIBN) in several solvents and in bulk. The specific rotations of the polymers were between 48.6 and 56.7°. The number-average molecular weights for the polymers were 1 400 to 1 900. MBZCI was copolymerized with styrene (ST) and methyl methacrylate (MMA) with AIBN in tetrahydrofuran at 50°C to obtain optically active copolymers. The monomer reactivity ratios of MBZCI (M1) with ST (M2) and MMA (M2) were determined as r1= 0.12, r2= 0.24 in the MBZCI-ST; r1= 0.23, r2= 2.38 in the MBZCI-MMA system. The Q-e values were obtained as Q1= 0.63, e11.07. It was found that all the polymers and copolymers showed a strongly negative circular dichroism (CD) peak at about 258 nm. From the results of chirality of the copolymer, it was concluded that induction of asymmetric carbon atoms into the MBZCI-ST copolymer main chain took place.
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