Synthesis and characterization of poly(succinimide-co-6-aminocaproic acid) by acid-catalyzed polycondensation of L-aspartic acid, and 6-aminocaproic acid

被引:0
|
作者
Kakuchi, T [1 ]
Shibata, M [1 ]
Matsunami, S [1 ]
Nakato, T [1 ]
Tomida, M [1 ]
机构
[1] MITSUBISHI CHEM CORP,TSUKUBA RES CTR,AMI,IBARAKI 30003,JAPAN
关键词
acid-catalyzed polycondensation; L-aspartic acid; 6-aminocaproic acid; o-phosphoric acid; poly(succinimide-co-6-aminocaproic acid);
D O I
10.1002/(SICI)1099-0518(19970130)35:2<285::AID-POLA11>3.0.CO;2-L
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The polycondensation of L-aspartic acid (ASP) with 6-aminocaproic acid (ACA) using o-phosphoric acid produced poly(succinimide-co-6-aminocaproic acid). The yield of the MeOH-insoluble copolymer decreased from 99 to 52% and that of the MeOH-soluble one increased from 9 to 47%, with increasing molar ratio of ACA in the monomer feed. The compositions of the succinimide (SCI) unit in the MeOH-insoluble and -soluble copolymers tended to be higher than those of ASP in the monomer feed. The copolymers with the 35 mol % SCI units or above were soluble in DMSO, DMF, and conc-H2SO4, but those with the 20 and 21 mol % SCI units were soluble only in conc-H2SO4. The melting temperature appeared for the copolymers with less than 76 mol % SCI units. Poly(succinimide-co-6-aminocaproic acid) was easily hydrolyzed to yield poly(aspartic acid-co-6-aminocaproic acid), and it exhibited biodegradability toward activated sludge. (C) 1997 John Wiley & Sons, Inc.
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页码:285 / 289
页数:5
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