title: Preparation and characterization of water-soluble chitosan derivative by Michael addition reaction.
abstract: The efficient procedure to prepare novel water-soluble chitosan derivative was established by Michael addition reaction to introduce sodium allylsulfonate into the chitosan at mild condition. The chemical structure of the chitosan derivative was characterized by FT-IR, (1)H NMR and Elemental analysis. The degree of substitution (DS) was calculated by Elemental analysis. The chitosan derivative exhibited an excellent solubility in the distilled water. The physical properties were analyzed by XRD and TG. The XRD study indicated that the crystallinity of chitosan derivative decreased. The thermal analysis showed that chitosan derivative had lower thermal stability than chitosan.
authors.affiliation: Changzhou University, Changzhou 213164, PR China.
authors.forename: Mingyan
authors.initials: M
authors.lastname: Jiang
authors.forename: Kemin
authors.initials: K
authors.lastname: Wang
authors.forename: John F
authors.initials: JF
authors.lastname: Kennedy
authors.forename: Jun
authors.initials: J
authors.lastname: Nie
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yu
authors.forename: Guiping
authors.initials: G
authors.lastname: Ma
mesh_terms: D002625:Chemistry, Organic / Q000379:methods*; D048271:Chitosan / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000737:chemistry; D004602:Elements; D009682:Magnetic Resonance Spectroscopy; D012995:Solubility; D017550:Spectroscopy, Fourier Transform Infrared; D013451:Sulfonic Acids / Q000737:chemistry; D013696:Temperature; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D004602:Elements; D013451:Sulfonic Acids; D014867:Water; D048271:Chitosan