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医用涤纶表面壳聚糖化学接枝法制备及细菌粘附研究 被引量:1

Surface modification by chitosan-grafted PET and evaluation of its bacterial adherence
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摘要 通过化学方法构建了壳聚糖长链分子接枝的涤纶表面,并研究了其细菌粘附性质.XPS全谱显示接枝表面出现氮元素峰,表明壳聚糖分子已成功接枝于材料表面.表皮葡萄球菌对材料进行细菌粘附比较,平板菌落计数法的实验结果表明表面接枝了壳聚糖的PET具有一定的抗细菌粘附能力.计算细菌与材料之间的粘附自由能△Fadh表明:细菌对PET表面的粘附自由能为负值,而细菌对壳聚糖分子接枝PET表面的AFadh>0,因此细菌对其表面的粘附过程难于发生,即使粘附也是可逆的.
机构地区 西南交通大学
出处 《功能材料》 EI CAS CSCD 北大核心 2004年第z1期2443-2444,2448,共3页 Journal of Functional Materials
基金 国家自然科学基金资助项目(50203011) 西南交通大学校基金资助项目(2002B02)
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