文献类型：期刊文献

中文题名：亚微米级无机抗菌剂的有机湿法改性

英文题名：Surface Modification of Sub-micron Antibacterial Agent in Organic Solvent

作者：王焕冰[1];李春忠[1];姜海波[1]

机构：[1]华东理工大学超细材料制备与应用教育部重点实验室,上海200237

年份：2002

卷号：28

期号：6

起止页码：614

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;EI(收录号：2003097382385);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：抗菌剂;TiO2;表面改性;偶联剂;二氧化钛;高聚物

外文关键词：antibacterial agent; TiO_2; surface modification; coupling agent

摘要：采用硬脂酸与钛酸酯偶联剂联用对超细亚微米级载银 Ti O2 进行了表面改性 ,使表面由亲水性变为亲油性 ,并探讨了改性前后的表面结构。用 IR、TEM等多种手段表征其改性效果 ,用 X射线荧光光谱测定了改性对银离子含量的影响。结果发现硬脂酸和钛酸酯成功包覆在粉体表面 ,包覆量可达 0 .92 % ,使粉体表面性质由亲水变为亲油 ;但用振荡烧瓶法测定改性前后抗菌剂对大肠杆菌的抗菌率 ,仍然达到 99.7%。
The surface of sub-micron-sized antibacterial agent was modified with stearic acid and titanate coupling agent. The inorganic antibacterial agent used was TiO_2 containing Ag +. The results show that the surface of TiO_2 is modified from hydrophilic to hydrophobic. It has been demonstrated that the surface modification of the inorganic particles can improve the compatibility and adhesion with the organic matrix materials. The structure and morphology were characterized by IR, TEM etc. The content of Ag + was detected by XRFP. It shows that stearic acid and titanate coupling agent have been grafted in the TiO_2 surface and the surface of TiO_2 is modified from hydrophilic to hydrophobic. The grafting efficiency can improve to 0.92%. The antibacterial efficiency was tested according to the standard issued by Ministry of Health of China and the result for coliform was 99.7% with method of flask-surging.