Summary
The polycondensations of L-aspartic acid (1) with aromatic aminocarboxylic acid, 4-aminobenzoic acid (2a), 4-aminophenylacetic acid (2b), 4-aminomethylbenzoic acid (2c), 4-(4-aminophenyl)butyric acid (2d), and 4-aminocinnamic acid (2e) were carried out using phosphoric acid as a catalyst. The obtained copolymers consiting of the succinimide and amide units, poly(succinimide-co-amide) (3), were soluble in DMF and DMSO except for that with 2e. The thermal properties differed with varying the 2 unit in 3, i.e., the Tgs of 3a–c (99 ∼ 138°C) were higher than those of 3d (81 ∼ 1 01°C), the apparent difference in the Tm between 3a–d did not observed, and the Td decreased in the order of 3a, 3c > 3d > 3b.
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Received: 24 February 1998/Revised version: 3 April 1998/Accepted: 13 April 1998
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Nakato, T., Tomida, M., Kusuno, A. et al. Synthesis of poly(succinimide-amide) by acid-catalyzed polycondensation of L-aspartic acid and aromatic aminocarboxylic acid. Polymer Bulletin 40, 647–650 (1998). https://doi.org/10.1007/s002890050303
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DOI: https://doi.org/10.1007/s002890050303