Ag/ZnO纳米复合抗菌剂解团聚工艺及机制  

Deaggregation Technology and Mechanism of Ag/ZnO Nano Composite Antibacterial Agent

作　　者：孟阿兰[1,2] 岑伟[2] 李镇江[2] 郭锋[2] 耿在丹[3] 张振华[1] 

机构地区：[1]青岛科技大学生态化工教育部重点实验室,山东青岛266042 [2]青岛科技大学,山东青岛266042 [3]郑州广播电视大学,河南郑州450003

出　　处：《稀有金属材料与工程》2009年第2期358-360,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50572041);山东省自然科技学基金(Y2007F64);山东省教育厅基金(J06A02);山东省科技攻关项目(2006GG2203014)

摘　　要：采用沉降实验、激光粒度分布、透射电镜等手段,研究PVPK17对Ag/ZnO纳米复合抗菌剂的解团聚的影响及机制,同时采用最小抑菌浓度对解团聚前后的抗菌性能进行表征。结果表明:经PVPK17解团聚后的Ag/ZnO纳米复合抗菌剂可在异丙醇中稳定悬浮6d以上,分散后的Ag/ZnO纳米复合抗菌剂的平均粒度可达51.3nm,当加入PVPK17的质量百分数为40%时达到最佳分散效果。用透射电镜观测表明,解团聚的Ag/ZnO纳米复合抗菌剂分散较好,在此基础上建立了PVPk17对Ag/ZnO纳米复合抗菌剂的解团聚模型。抗菌实验表明,分散后的Ag/ZnO纳米复合抗菌剂的MIC可达50mg/L,抗菌性能良好。In this paper, a deaggregation technology and its mechanism were studied for the Ag/ZnO nanoeomposite antibacterial agent added with PVPK17 by sedimentation experiment, laser scattering particle size analysis and transmission electron microscopy （TEM）. The minimum inhibitory concentration of the fore-aft deaggregation Ag/ZnO nanocomposite antibacterial agent was tested. The results showed that the Ag/ZnO nanocomposite antibacterial agent in isopropanol could be stable suspension more than 6 days after deaggregation with PVPk17, the average particle size was smaller than 51.3 nm. The dispersion effect was the best when the mass % of PVPk17 was 40%. TEM results show that the Ag/ZnO nanocomposite antibacterial agent is kindly dispersed. Then, a model of deaggregation mechanism was built. The MIC ofAg/ZnO nanocomposite antibacterial agent was 50 mg/L after deaggregation, with good antibacterial property.

关 键 词：解团聚 PVP Ag/ZnO 纳米复合抗菌剂 

分 类 号：TB383.1[一般工业技术—材料科学与工程]