PBT/PETG/纳米氧化锌复合材料的制备与抗菌性能  

Preparation and Antibacterial Properties of PBT/PETG/ZnO Nanocomposites

作　　者：张文帅 陈延明[1] 郭又晟 范璐璐 张智慧 Zhang Wenshuai;Chen Yanming;Guo Yousheng;Fan Lulu;Zhang Zhihui(School of Petrochemical Engineering,Shenyang University of Technology,Liaoyang 111003,China)

机构地区：[1]沈阳工业大学石油化工学院,辽宁辽阳111003

出　　处：《工程塑料应用》2023年第7期51-57,共7页Engineering Plastics Application

摘　　要：为制备一种具有抗菌性能的复合材料,采用熔融密炼法制备了不同含量纳米氧化锌的聚对苯二甲酸丁二酯(PBT)/聚对苯二甲酸乙二酯-1,4-环己烷二甲酯(PETG)/纳米氧化锌抗菌复合材料。考察了不同粒径纳米氧化锌的抗菌效果及含量对复合材料抗菌性能的影响,并通过紫外-可见吸收光谱、X射线衍射、透射电子显微镜、涂布平板法及动态水接触角等方法对纳米氧化锌及复合材料进行表征分析。结果表明,所制备的纳米氧化锌均为六方纤锌矿结构,且油酸钠与乙酸锌的物质的量比值越大,所制纳米氧化锌的粒径越小,分散性越好,抗菌效果越强。随着纳米氧化锌添加量的增多,抗菌复合材料表面对细菌的黏附性变小。当氧化锌的质量分数为0.2%时,抗菌复合材料对金黄色葡萄球菌与大肠杆菌抗菌率分别为23.21%,62.41%,已经具备抑菌效果,同时材料表面水接触角由原来的84.7°变为95.1°。纳米氧化锌的质量分数为0.5%时,抗菌率分别为86.79%,89.47%,相较于0.2%时有较大提升。当纳米氧化锌的质量分数为1%时,复合材料对大肠杆菌与金黄色葡萄球菌的抗菌率分别为95.71%与98.50%,均符合抗菌材料的要求。In order to prepare a kind of composite material with antibacterial properties,the antibacterial composite materials of PBT/PETG/nano zinc oxide with different contents of nano zinc oxide were prepared by melt mixing method.The antibacterial effect of nano zinc oxide with different particle sizes and the influence of its content on the antibacterial performance of the compos‐ite were investigated.The nano zinc oxide and the composite were characterized and analyzed by UV-vis absorption spectrum,X-ray diffraction,transmission electron microscopy,coating plate method and dynamic water contact angle.The experimental results show that the prepared nano zinc oxide is hexagonal Wurtzite structure,and the larger the molar ratio of sodium oleate to Zinc acetate,the smaller the particle size of the prepared nano zinc oxide,the better the dispersion,and the stronger the antibacterial effect.With the increase of the amount of nano zinc oxide added,the adhesion of the antibacterial composite material surface to bacteria decreases.When the content of zinc oxide is 0.2wt%,the antibacterial rate of the antibacterial composite against Staphylo‐coccus aureus and Escherichia coli is 23.21%and 62.41%respectively,it has antibacterial effect.At the same time,the water contact angle of the material surface is changed from 84.7°to 95.1°.When the content of nano zinc oxide is 0.5wt%,the antibacterial rates are 86.79%and 89.47%,respectively,which is significantly improved compared to 0.2%.When the content of nano zinc oxide is 1wt%,the antibacterial rates of the composite against Escherichia coli and Staphylococcus aureus are 95.71%and 98.50%respec‐tively,which meet the requirements of antibacterial materials.

关 键 词：聚对苯二甲酸丁二酯 聚对苯二甲酸乙二酯-1 4-环己烷二甲酯 纳米氧化锌 抗菌 复合材料 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]