文献类型：期刊文献

英文题名：Solvent-free polymerization of citric acid and hexamethylenediamine for novel carboxylated polyamides

作者：Jiang, Man[1,2];Chen, Wei[3,4];Fang, Ping[1];Chen, Shangli[1];Bai, Junxiao[1];Huang, Yanfei[1];Han, Miaowei[1];Lu, Ping[1];Dong, Jian[1]

机构：[1]Shaoxing Univ, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Ningbo Univ, Fac Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China;[3]Nanjing Univ, Dept Polymer Sci & Engn, Nanjing 210093, Peoples R China;[4]Nanjing Univ, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China

年份：2012

卷号：50

期号：18

起止页码：3819

外文期刊名：JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000307339900016)、、EI(收录号：20123315344196)、Scopus(收录号：2-s2.0-84864885431)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Nos. 20974063, 20704022 and 21074052), Department of Science and Technology of Zhejiang Province (No. 2009R10040), Natural Science Foundation of Zhejiang Province (Y4090504), State Key Laboratory of Coordination Chemistry, Nanjing University, and Shaoxing University (No. 08LG1005).

语种：英文

外文关键词：polyamides; polyelectrolytes; polyimides; renewable resource; water-soluble polymers

外文摘要：Copolymers of tributyl citrate (TBC) and hexamethylenediamine (HMDA) were synthesized with a solvent-free condensation method with molar ratios of TBC to HMDA varying from 2:1 to 1:2. The reaction led to poly(succinimide-co-citramide) copolymers which were characterized by infrared and Raman spectroscopies, X-ray diffraction, and thermal analyses. Hydrolysis of the copolymers resulted in water soluble polycitramides with number averaged molecular weights ranging from 1.16 x 104 to 5.00 x 103 as determined by gel permeation chromatography. 1H, 13C, and 13C-1H-heteronuclear single quantum coherence NMR spectroscopy has confirmed that the hydrolyzed polycitramides with COOH side chains and amide backbones are structurally similar to biodegradable poly(aspartic acid) (PASP). Interestingly, the polycitramides showed Ca2+ and Pb2+ ion chelating capabilities higher than PASP, citric acidsorbitol copolymers, or conventional resins. Thus, the polycitramides offer promise as a totally new class of metal sequesters and renewable substitutes for PASP and poly(acrylic acid). (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012