title: Synthesis, characterization and thermal sensitivity of chitosan-based graft copolymers.
abstract: 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 (1)H NMR analysis were combined to investigate the thermal sensitivity of CECTS-g-PDMAs in aqueous solution.
authors.affiliation: Institute of Polymer Science and Engineering, College of Chemistry, Xiangtan University, Xiangtan, Hunan, PR China. kanghongmei001@163.com
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Kang
authors.forename: Yuan-Li
authors.initials: YL
authors.lastname: Cai
authors.forename: Peng-Sheng
authors.initials: PS
authors.lastname: Liu
mesh_terms: D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000737:chemistry* / Q000633:toxicity; D002686:Chitin / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry*; D046911:Macromolecular Substances; D008422:Materials Testing; D008689:Methacrylates; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry / Q000633:toxicity; D013696:Temperature; D044366:Transition Temperature; D019737:Transplants
chemical_list: D001672:Biocompatible Materials; D046911:Macromolecular Substances; D008689:Methacrylates; D011108:Polymers; D002686:Chitin; D048271:Chitosan