BP-GO-AgNPs复合粉末添加量对BP-GO-AgNPs复合涂层抑菌性能的影响  

Effect of BP-GO-AgNPs composite powder addition on antibacterial performance of BP-GO-AgNPs composite coating

作　　者：肖鹏[1] 李秀琴 冯霞[2] 张蓓蓓[2] 李博轩 XIAO Peng;LI Xiu-qin;FENG Xia;ZHANG Bei-bei;LI Bo-xuan(Aviation Engineering Institute,Civil Aviation Flight University of China,Guanghan 618307,China;Sichuan Academy of Food and Fermentation Industries,Chengdu 611130,China)

机构地区：[1]中国民用航空飞行学院航空工程学院,广汉618307 [2]四川省食品发酵工业研究设计院,成都611130

出　　处：《复合材料科学与工程》2022年第6期47-52,共6页Composites Science and Engineering

基　　金：微生物资源四川省科技资源共享服务平台;民航教育人才项目(0252101);中国民用航空飞行学院科研基金面上项目(J2020-47)。

摘　　要：将实验室研发的BP-GO-AgNPs抑菌复合粉末添加到环氧树脂中,制备了BP-GO-AgNPs抑菌复合涂层。探究了不同BP-GO-AgNPs复合粉末添加量对涂层表面亲水性、基材附着力和抑菌性能的影响。采用SEM和接触角测试可观测涂层表面微观形貌及判断涂层表面亲水性能好坏,结果表明,粉末的添加没有显著改变涂层表面的亲水性。采用划格法评定复合涂层的基材附着力等级,结果表明,添加量为1wt%、3wt%的附着力较优,等级为0级。采用贴膜法测试复合涂层的抑菌性能,结果表明,随着添加量增加,其对大肠埃希氏菌和金黄色葡萄球菌的抑菌率呈现先上升后下降的趋势,添加量为3wt%时,涂层对大肠埃希氏菌和金黄色葡萄球菌的抑菌效果最好,抑菌率分别为95%和89.6%,且对大肠埃希氏菌的抑菌效果要强于金黄色葡萄球菌。综合上述各项性能,较优的抑菌复合粉末添加量为3wt%。BP-GO-AgNPs antibacterial composite coating was prepared by adding BP-GO-AgNPs antibacterial composite powder to epoxy resin.The effects of different amount of BP-GO-AgNPs composite powder on the surface hydrophilicity,substrate adhesion and bacteriostasis of the coating were investigated.SEM and contact angle tests are used to observe the micro morphology of the coating surface and judge the hydrophilicity of the coating surface.The results show that the hydrophilicity of the coating surface is not significantly changed with the addition of composite powder.The adhesion grade of the composite coating is evaluated by grid method.The results show that the adhesion grade of the composite coating with 1wt%and 3wt%is better,and the grade is grade 0.The antibacterial properties of the composite coating are tested by film method.The results show that the antibacterial rates of the composite coating against Escherichia coli and Staphylococcus aureus increase first and then decrease with the increase of the addition amount.When the addition amount is 3wt%,the antibacterial effect of the composite coating against Escherichia coli and Staphylococcus aureus is the best,the antibacterial rates are 95%and 89.6%respectively,and the antibacterial effect on Escherichia coli is stronger than that on Staphylococcus aureus.Based on the above properties,the optimal amount of antibacterial composite powder is 3wt%.

关 键 词：BP-GO-AgNPs复合粉末 BP-GO-AgNPs复合涂层 抑菌性能 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]