Synthesis of Amphiphilic Ternary Chitooligosaccharide Derivatives and Theirs Inclusion Compounds

Chem. J. Chinese Universities

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Synthesis of Amphiphilic Ternary Chitooligosaccharide Derivatives and Theirs Inclusion Compounds

ZHAO San-Ping^*, CAO Meng-Jie, XU Wei-Lin

Key Laboratory of Green Processing and Functional Textiles of New Textile Materials of Ministry of Education, Wuhan University of Science and Engineering, Wuhan 430073, China

Received:2008-05-23 Revised:1900-01-01 Online:2008-09-10 Published:2008-09-10
Contact: ZHAO San-Ping

Abstract

Abstract: Novel water-soluble amphiphilic ternary graft copolymers(COS-g-PCL-b-MPEG) were synthesized by N,N’-dicyclohexyl carbodiimide(DCC) coupling reaction between chitooligosaccharide(COS) with MPEG-b-PCL-COOH, which was synthesized via ring-opening polymerization of ε-caprolactone(CL) with methoxy poly(ethylene glycol)(MPEG) as an initiator and subsequent carboxylation by succinic anhydride. The che-mical composition of the graft copolymers was studied by ¹H NMR spectrum. In aqueous solutions, stable supramolecular hydrogels could be rapidly fabricated via the inclusion compound between the MPEG-b-PCL graft of COS derivates and α-CD. The supramolecular structure of the hydrogels was revealed by WXRD analysis. The temperature sweep test results show that no gel-sol transition temperature appears over the range from 20 ℃ to 60 ℃ for the obtained hydrogels.

Key words: Ternary graft copolymer, Coupling reaction, Inclusion compound, Supramolecular hydrogel

CLC Number:

O633.11

TrendMD:

ZHAO San-Ping^*, CAO Meng-Jie, XU Wei-Lin. Synthesis of Amphiphilic Ternary Chitooligosaccharide Derivatives and Theirs Inclusion Compounds[J]. Chem. J. Chinese Universities, doi: .

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Synthesis of Amphiphilic Ternary Chitooligosaccharide Derivatives and Theirs Inclusion Compounds

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