Volume 131, Issue 2
Article

Preparation of aqueous soluble polyamides from renewable succinic acid and citric acid as a new approach to design bio-inspired polymers

Man Jiang

Man Jiang

Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang Province, 315211 China

School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province, 312000 China

Zhejiang Provincial Key Laboratory of Alternative Technologies for Fine Chemicals, Shaoxing, Zhejiang Province, 312000 China

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Guangsong Chen

Guangsong Chen

School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province, 312000 China

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Ping Lu

Ping Lu

School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province, 312000 China

Zhejiang Provincial Key Laboratory of Alternative Technologies for Fine Chemicals, Shaoxing, Zhejiang Province, 312000 China

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Jian Dong

Corresponding Author

Jian Dong

Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang Province, 315211 China

School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province, 312000 China

Zhejiang Provincial Key Laboratory of Alternative Technologies for Fine Chemicals, Shaoxing, Zhejiang Province, 312000 China

Correspondence to: J. Dong (E-mail: [email protected])Search for more papers by this author
First published: 19 August 2013
Citations: 9

ABSTRACT

A novel type of aqueous soluble polyamides were prepared as renewable substitutes for ecologically benign poly(aspartic acid) by polymerization of succinic acid ester and hexamethylene diamine in the presence of citric acid ester. The copolymerization resulted in the formation of poly(amide imide) intermediates, which were hydrolyzed to aqueous solutions of polyamides. The hydrolyzed products were confirmed to be copolymers of succinamide and citramide with COOH side chains, similar to poly(aspartic acid). The polyamides showed strong chelating abilities to Ca2+ and Pb2+ metals, comparable to poly(aspartic acid). Interestingly, they also demonstrated antifreeze activities in water by reducing the ice fractions. The polyamides represent a new class of metal chelators and antifreeze protein mimics derived from succinamide and citramide. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39807.

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