Convenient synthesis of high molecular weight poly(succinimide) by acid-catalysed polycondensation of L-aspartic acid
Convenient synthesis of high molecular weight poly(succinimide) by acid-catalysed polycondensation of L-aspartic acid
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DOI：
10.1016/s0032-3861(96)01079-8
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发表时间：
1997-09-01
期刊：
影响因子：
4.6
通讯作者：
Kakuchi, T
中科院分区：
文献类型：
--
作者：
Tomida, M;Nakato, T;Kakuchi, T
以L-天冬氨酸为原料，采用酸催化缩聚法合成了聚琥珀酰亚胺（PSI）。聚合反应在约100 ℃以上进行。160 ℃，和PSI具有最高的重均分子量，64 300，获得使用均三甲苯和环丁砜（w/w，7/3）和磷酸的混合溶剂。PSI碱水解制备的聚天冬氨酸比热缩聚制备的聚天冬氨酸具有更好的生物降解性。28天后，生化需氧量/理论需氧量（BOD/TOD）和溶解有机碳的催化PASP分别为82%和89%，热PASP分别为26%和46%。(C)1997年爱思唯尔科学有限公司
Poly(succinimide) (PSI) was synthesized by acid-catalysed polycondensation of L-aspartic acid. Polycondensation proceeded at a reaction temperarture of above ca. 160 degrees C, and a PSI with the highest weight-average molecular weigh, 64 300, was obtained using a mixed solvent of mesitylene and sulfolane (w/w, 7/3) and phosphoric acid. Poly(aspartic acid), which was produced by alkali-hydrolysis of PSI, exhibited higher biodegradability than that originated from thermally polycondensed aspartic acid. After 28 days, biochemical oxygen demand/theoretical oxygen demand (BOD/TOD) and dissolved organic carbon for catalytic PASP were 82 and 89%, respectively, and 26 and 46% for thermal PASP. (C) 1997 Elsevier Science Ltd.