College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China; School of Engineering and Design, Brunel University, Middlesex UB8 3PH, UK.
College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China; School of Engineering and Design, Brunel University, Middlesex UB8 3PH, UK.
Carbohydr Polym. 2014 Nov 26;113:108-14. doi: 10.1016/j.carbpol.2014.06.081. Epub 2014 Jul 10.
This paper presents a novel environmentally friendly production of chitosan-crosslinked oxycellulose films by using ionic liquids (AmimCl and SmimHSO4). The effect of reaction parameters on chitosan contents and mechanical properties of chitosan-crosslinked oxycellulose films was also investigated. The results revealed that appropriate SmimHSO4 dosage and reaction time were 5% and 2h respectively. FTIR analysis of chitosan-crosslinked oxycellulose film suggested that the chitosan was crosslinked with oxycellulose through the reaction between the amino groups in chitosan and the aldehyde groups in oxycellulose, and the results of XPS analysis further confirmed the reaction between both polysaccharides. SEM images suggested that the developed chitosan-crosslinked oxycellulose films had a smooth and compact structure, and a highly inhibitory effect against the bacteria of Escherichia coli and Staphylococcus aureus. The developed materials and technologies could be further formulated for the production of various antimicrobial and biomedical products or water treatment membranes.
本文提出了一种利用离子液体（AmimCl 和 SmimHSO4）制备壳聚糖交联氧纤维素薄膜的环保新方法。还考察了反应参数对壳聚糖交联氧纤维素薄膜中壳聚糖含量和力学性能的影响。结果表明，SmimHSO4 的适宜用量和反应时间分别为 5%和 2h。壳聚糖交联氧纤维素薄膜的 FTIR 分析表明，壳聚糖通过壳聚糖中的氨基与氧纤维素中的醛基之间的反应与氧纤维素交联，XPS 分析结果进一步证实了两种多糖之间的反应。SEM 图像表明，所开发的壳聚糖交联氧纤维素薄膜具有光滑致密的结构，对大肠杆菌和金黄色葡萄球菌等细菌具有高度抑制作用。所开发的材料和技术可进一步用于生产各种抗菌和生物医学产品或水处理膜。
