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Preparation and properties of alginate/carboxymethyl chitosan blend fibers |
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| Authors: | Lihong Fan Yumin Du Baozhong Zhang Jianhong Yang Jinping Zhou John F. Kennedy |
| Affiliation: | aCollege of Chemical Engineering, Wuhan University of Technology, Wuhan 430070, China bDepartment of Environmental Science, Wuhan University, Wuhan 430072, China cDepartment of Chemistry, Wuhan University, Wuhan 430072, China dBirmingham Carbohydrate and Protein Technology Group, School of Chemical Sciences, University of Birmingham, Birmingham B15 2TT, UK eChembiotech Laboratories, Birmingham Research Park, Vincent Drive, Birmingham, B15 2SQ, UK |
| Abstract: | Alginate/carboxymethyl chitosan blend fibers, prepared by spinning their mixture solution through a viscose-type spinneret into a coagulating bath containing aqueous CaCl2, were studied for structure and properties with the aid of infrared spectroscopy (IR), X-ray diffraction (XRD) and scanning electron micrography (SEM). The analyses indicated a good miscibility between alginate and carboxymethyl chitosan, because of the strong interaction from the intermolecular hydrogen bonds. The best values of the dry tensile strength and breaking elongation were obtained when carboxymethyl chitosan content was 30 and 10 wt%, respectively. The wet tensile strength and breaking elongation decreased with the increase of carboxymethyl chitosan content. Introduction of CM-chitosan in the blend fiber improved water-retention properties of blend fiber compared to pure alginate fiber. Antibacterial fibers, obtained by treating the fibres with aqueous solution of N-(2-hydroxy)-propyl-3-trimethylammonium chitosan chloride and silver nitrate, respectively, exhibited good antibacterial activity to Staphylococcus aureus. |
| Keywords: | Alginate Carboxymethyl chitosan Blend fibers Miscibility Properties |
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