壳聚糖接枝聚乙烯吡咯烷酮复合碘膜的制备及其性能

doi:10.11944/j.issn.1000-0518.2015.05.140307

摘要/Abstract

摘要：

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。

关键词: 壳聚糖, 碘, 膜, 抑菌性能, 功能材料

Abstract:

The CTS-PVP film with iodine was prepared by chitosan(CTS) grafted polyvinyl pyrrolidone(PVP) in the protection of N₂ with dimethyl 2, 2'-azobis(2-methylpropionate)(AIBME) as initiator followed by addition of a certain amounts of iodine in ethanol solution and a gelatin solution. The properties of the film were characterized by infrared(IR), scan electron microscopy(SEM), UV-visible spectroscopy(UV-Vis), differential scanning calorimetry(DSC), etc. The UV-Vis spectrum shows a strong absorption between 200~600 nm for the CTS-PVP film with iodine. The glass transition temperature at 319 ℃ indicates a good thermal stability. The antimicrobial test result shows that the inhibition zone diameters increase along with the increasing amounts of CTS-PVP-I₂ complex liquid. The inhibition zone diameters against Staphylococcus aureus and Escherichia coli are in the range of 16~36 mm, when the added volume of CTS-PVP-I₂ complex fluid is 10 mL or more, implying its high sensitivity and good antibacterial properties.

Key words: chitosan, iodine, film, antibacterial properties, functional materials

中图分类号:

郭瑞, 赛明泽, 张敏, 钟士亮, 马文涛, 陈蕾, 丁德润. 壳聚糖接枝聚乙烯吡咯烷酮复合碘膜的制备及其性能[J]. 应用化学, 2015, 32(5): 498-503.

GUO Rui, SAI Mingze, ZHANG Min, ZHONG Shiliang, MA Wentao, CHEN Lei, DING Derun. Preparation and Performance of Chitosan Grafted Polyvinyl Pyrrolidone Film with Iodine[J]. Chinese Journal of Applied Chemistry, 2015, 32(5): 498-503.

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