Journal
CARBOHYDRATE RESEARCH
Volume 341, Issue 17, Pages 2851-2857Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2006.08.001
Keywords
chitosan; characterization; graft copolymerization; grafting percentage; thermal sensitivity
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Novel chitosan-based graft copolymers (CECTS-g-PDMA) were synthesized through homogeneous graft copolymerization of (N,N-dimethylamino)ethyl methacrylate (DMA) onto N-carboxyethylchitosan (CECTS) in aqueous solution by using ammonium persulfate (APS) as the initiator. The effect of polymerization variables, including initiator concentration, monomer concentration, reaction time and temperature, on grafting percentage was studied. XRD, FTIR, DSC and TGA were used to characterize the graft copolymers. Surface-tension measurements, turbidity measurements and temperature-variable H-1 NMR analysis were combined to investigate the thermal sensitivity of CECTS-g-PDMAs in aqueous solution. (c) 2006 Elsevier Ltd. All rights reserved.
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