title: Study on antibacterial activity of O-carboxymethyl chitosan sodium salt and spinnability of O-carboxymethyl chitosan sodium salt/cellulose polyblends in N-methylmorpholine-N-oxide system.
abstract: O-carboxymethyl chitosan sodium salt (NaCMCh), which has good antibacterial activity and solubility in N-methylmorpholine-N-oxide (NMMO) after being treated by sodium hydroxide solution, was blended with cellulose NMMO/H₂O solution to study the spinnability. The effect of molecular weight on antibacterial activity and solubility was discussed. The optimal range of molecular weights is from 8 x 10⁴ to 1.9 x 10⁵). The rheological properties of NaCMCh/cellulose polyblends in steady-shear were investigated. The results are presented using appropriate master curves for the temperature and concentration effects. The flow behavior index of the polyblends increase with increasing temperature and NaCMCh content. Apparent viscosity and zero-shear viscosity decrease, but the critical shear rate increases due to the addition of NaCMCh. The polyblends with NaCMCh display a lower structural viscosity index. Finally, the fibers were successfully spun using the lyocell process with NMMO/H₂O and the fibers with NaCMCh exhibit good mechanical properties and moisture absorption.
authors.affiliation: Department of Polymer Materials Science and Engineering, College of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, PR China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Polymer Materials Science and Engineering, College of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: College of Textile, Tianjin Polytechnic University, Tianjin 300160, PR China.
authors.forename: Xupin
authors.initials: X
authors.lastname: Zhuang
authors.affiliation: Department of Polymer Materials Science and Engineering, College of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, PR China.
authors.forename: Bo
authors.initials: B
authors.lastname: Wu
authors.affiliation: Department of Polymer Materials Science and Engineering, College of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, PR China.
authors.forename: Fan
authors.initials: F
authors.lastname: Yang
authors.affiliation: Department of Polymer Materials Science and Engineering, College of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, PR China.
authors.forename: Anrong
authors.initials: A
authors.lastname: Zeng
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D048271:Chitosan / Q000031:analogs & derivatives* / Q000737:chemistry / Q000494:pharmacology; D003497:Cyclic N-Oxides / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D009025:Morpholines / Q000737:chemistry*; D012995:Solubility; D014783:Viscosity
chemical_list: D000900:Anti-Bacterial Agents; D003497:Cyclic N-Oxides; D009025:Morpholines; C504164:O-carboxymethylchitosan; D002482:Cellulose; D048271:Chitosan; C067960:4-methylmorpholine N-oxide