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- 2018
多功能nano ZnO/PMMA复合材料的制备与性能
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Abstract:
采用一种简单、环保的方法原位制备了纳米ZnO/聚甲基丙烯酸甲酯（nano ZnO/PMMA）复合材料，并对其抗紫外性质、透明性、光致发光性质和抗菌性进行了研究。以乙醇为溶剂在30℃溶解单体、引发剂、前驱体和催化剂；升温到80℃使甲基丙烯酸甲酯（MMA）的聚合与ZnO的合成同时进行；蒸发去除溶剂即可获得nano ZnO/PMMA复合材料。采用XRD、FTIR、TEM和UV-Vis对nano ZnO/PMMA复合材料进行表征。结果表明，已成功制备nano ZnO/PMMA复合材料；所制备的nano ZnO/PMMA复合材料能够吸收200~400 nm的紫外辐射，且在可见光区域具有高的透明度；光致发光测试表明，nano ZnO/PMMA复合材料在紫外光激发下能够发出明亮的蓝绿光；抗菌测试表明，nano ZnO/PMMA复合材料对金黄色葡萄球菌具有显著的抗菌效果，其抗菌率大于99%。多功能nano ZnO/PMMA复合材料在紫外屏蔽涂层、抗紫外有机玻璃、荧光材料、抗菌塑料制品等诸多领域有潜在应用。 The nano ZnO/poly(methyl methacrylate)(nano ZnO/PMMA) composites were prepared by a simple and environmental friendly method. The functions including UV resistance, transparency, photoluminescence and antibacterial properties of nano ZnO/PMMA were studied. The monomer, initiator, precursor and catalyst were dissolved in ethanol at 30℃. The system were heated to 80℃, the polymerization of poly(methyl methacrylate)(MMA) and the synthesis of ZnO were carried out simultaneously.The nano ZnO/PMMA composites were obtained after solvent evaporation.The nano ZnO/PMMA composites were characterized by XRD, FTIR, TEM and UV-Vis. The results show the successful preparation of nano ZnO/PMMA composites, nano ZnO/PMMA composites could absorb ultraviolet radiation of 200-400 nm and have high transparency in visible region. The characterization of photoluminescence shows that nano ZnO/PMMA is able to emit bright blue-green light under excitation of ultraviolet light. The antibacterial testing result showes that nano ZnO/PMMA composites have significant antibacterial effect on staphylococcus aureus, the antibacterial rate is more than 99%. nano ZnO/PMMA composites perform multifunctional properties and have potential applications in many areas, such as UV shielding coatings, UV resistant plexiglass, fluorescent materials, antibacterial plastic products, and so on. 国家自然科学基金（51463005）；贵州省科学技术基金（黔科合J字[2014]2051号及黔科合J字[2014]2054号）；贵州省研究生教育创新计划（黔教研合JYSZ字[2014]001）
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