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Polymerizations and Copolymerizations of N-Maleoyl L-Amino Acids
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Tsutomu Oishi1), Koji Matsusaki1) and Minoru Fujimoto1)
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1) Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi University
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ABSTRACT: N-Maleoyl L-amino acids (MIAA), i.e., N-maleoyl L-alanine (AMI) and N-maleoyl L-phenylalanine (PAMI), were radically polymerized in several solvents to obtain polymers having specific rotation of −32° to −42° and −144° to −164°, respectively. The number-average molecular weights of the polymers were generally small, 1.6×103 to 1.0×104, and the polydispersity was very large. Radical copolymerizations of MIAA (M1) were performed with styrene (ST, M2) and methyl methacrylate (MMA, M2) in THF at 60°C. The monomer reactivity ratios (r1, r2) and Alfrey-Price Q, e values were determined. Chiroptical properties of the polymers and copolymers were investigated, and asymmetric induction in the copolymerizations was discussed.
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Keyword: Maleoyl L-Amino Acid/ Radical Polymerization/ Asymmetric Induction Copolymerization/ Monomer Reactivity Ratios/ Q, e Values
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Published online: April 04, 2005 |
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© Copyright, 2005 by The Society of Polymer Science, Japan |
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