壳聚糖(CTS)在N2气保护下以偶氮二异丁酸二甲酯(AIBME)为引发剂接枝聚乙烯吡咯烷酮(PVP),加碘乙醇溶液并与明胶溶液共混制备CTS-PVP复合碘膜.通过红外(IR)、扫描电子显微镜(SEM)、紫外-可见(UV-Vis)、差示扫描量热法(DSC)等技术手段对其表征.UV结果表明,CTS/PVP复合碘膜在200～600 nm之间具有强吸收.其玻璃化转变温度为319℃,具有很好的热稳定性.抑菌性测试表明其抑菌度随着加碘量的增加而增大,当CTS-PVP-I2复合液体积≥10 mL时,其对金黄色葡萄球菌和大肠杆菌的抑菌环直径均在16 ～36 mm之间,为高度敏感,具有良好的杀菌效果.
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