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.
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