纳米ZnO/聚丙烯酸酯复合乳液的制备与表征  

Preparation and Characterization of Nano-ZnO/Polyacrylate Composite Emulsions

作　　者：吴迪[1] 楚险峰 潘立志 沈沉[1] 周茜[1] 周兴平[1] 

机构地区：[1]东华大学化学化工与生物工程学院,上海201620 [2]上海外高桥造船有限公司涂装部,上海200137

出　　处：《纳米科技》2016年第1期13-19,共7页

摘　　要：本文先采用硅烷偶联剂KH-570对纳米ZnO进行改性，再通过原位乳液聚合法制备了纳米ZnO／聚丙烯酸酯复合乳液。研究了改性纳米ZnO用量对复合乳液的紫外吸光率、复合乳胶膜力学性能和抗菌性能的影响，并采用红外光谱、TEM、紫外吸收光谱、拉伸强度、断裂伸长率及抑菌率测试等手段进行了表征。结果表明：当改性纳米ZnO用量为3．0％时，所制备的复合乳液抗紫外性最强、复合乳胶膜的综合力学性能最佳：当纳米ZnO用量升至4．0％时抑菌率显著提升，对大肠杆菌和金黄色葡萄球菌的抑菌率分别为82．3％和80．0％。Nano-ZnO was modified by the silane coupling agent KH-570 and Nano-ZnO/polyacrylate composite emulsions were prepared by in-situ emulsion polymerization method. Investigations were carried out for effects of nano-ZnO concentration on the UV absorbance of composite emulsions, the mechanical properties, and the inhibition rate of latex film. These products were characterized by analyses of FT-IR, TEM, UV absorption spectrum, tensile strength, elongation at break and inhibition rate. From the aspects ofstrong ultraviolet resistance for the nano-ZnO/polyacrylate composite emulsions and good mechanical properties for the latex film, the nano-ZnO concentration was optimized to 3.0%. In comparison to 2.0% dosage of nano-ZnO , the inhibition rates for Escherichia coli and Staphylococcus aureus were significantly up to 82.3% and 80.0% at the 4.0% dosage of nano-ZnO.

关 键 词：纳米氧化锌(ZnO) 改性 聚丙烯酸酯 原位聚合法 抗菌 

分 类 号：TQ630.7[化学工程—精细化工]