华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (8): 94-99.

• 化学化工 • 上一篇    下一篇

新型改性蒙脱土复合抗菌剂的制备及抗菌性能

谭绍早1 马文石2 刘应亮1   

  1. 1.暨南大学 化学系,广东 广州5 10632;2.华南理工大学 材料科学与工程学院,广东 广州 510640
  • 收稿日期:2005-11-18 出版日期:2006-08-25 发布日期:2006-08-25
  • 通信作者: 谭绍早(1966-),男,博士,副研究员,主要从事抗菌剂及抗菌功能材料研究 E-mail:tanshaozao@163.com
  • 作者简介:谭绍早(1966-),男,博士,副研究员,主要从事抗菌剂及抗菌功能材料研究
  • 基金资助:

    广东省自然科学基金团队项目(05200555);广东省科技计划项目(2004B20201026);广州市科技计划项目(2005Z3-D2121);暨南大学引进优秀人才科研启动基金项目(5105013)

Preparation and Antibacterial Property of M odified M ontmorillonite as Novel Composite Antibacterial Agent

Tan Shao-zao1  Ma Wen-shi2  Liu Ying-liang1   

  1. 1.Dept.of Chemistry,Jinan Univ.,Guangzhou 5 10632,Guangdong,China;2.School of Materials Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-11-18 Online:2006-08-25 Published:2006-08-25
  • Contact: 谭绍早(1966-),男,博士,副研究员,主要从事抗菌剂及抗菌功能材料研究 E-mail:tanshaozao@163.com
  • About author:谭绍早(1966-),男,博士,副研究员,主要从事抗菌剂及抗菌功能材料研究
  • Supported by:

    广东省自然科学基金团队项目(05200555);广东省科技计划项目(2004B20201026);广州市科技计划项目(2005Z3-D2121);暨南大学引进优秀人才科研启动基金项目(5105013)

摘要: 将锌离子和季铵阳离子依次与蒙脱土进行离子交换反应,制备了新型改性蒙脱土复合抗茵剂,并探讨了其最佳制备工艺条件.所制备的复合抗茵剂中锌离子和十四烷基二甲基苄基季铵阳离子的质量分数分别为2.95%和12.18%.XRD和TG分析结果表明,锌离子和季铵阳离子已交换到蒙脱土中,且复合抗茵剂中季铵阳离子的热分解起始温度约为210 ℃.文中还研究了复合抗茵剂的抗茵活性,发现其对大肠杆茵(E.coli)、金黄色葡萄球菌(S.aureus)和绿脓杆菌(P.aeruginosa)等几种典型细菌的最小抑茵浓度(MIC)均小于或等于300mg、L,具有良好的抗茵性能和比较广的抗茵谱;复合抗茵剂在50℃的去离子水中浸泡30 h后,仍然保持较好的抗茵活性,显示出优异的耐水性能.

关键词: 复合抗茵剂, 季铵阳离子, 锌离子, 改性蒙脱土, 制备, 抗茵性能

Abstract:

A New kind of modified montmoriUonite was prepared by introducing Zn2+ and quaternary ammonium cations into montmorillonite via the ion exchange,which was used as an antibacterial agent.The optimal preparation conditions were also investigated,and the mass fractions of Zn and tetradecyldimethyl benzyl ammonium were 2.95% and 12.18% ,respectively.The results of XRD and TG reveal a perfect exchange of Zn2+ and quaternary ammonium cations into montmorillonite as well as an onset decomposition temperature of the quaternary ammonium cation of about 210℃.Th e investigation into the antibacterial property of the prepared composite antibacterial agent shows that the minimal inhibitory concentrations(MIC)towards E.coli,S.aureus and P. aeruginosa are no more than 300 mg/L,which shows that the antibacterial agent possesses excellent antibacterial property and rather wide antibacterial spectrum.Moreover,the composite antibacterial agent exhibits good resistance to water-its antibacte.rial property remains excellent even after a dipping in deionized water at 50℃ for 30 h.

Key words: composite an tibacterial agent, quaternary ammonium cation, zinc ion, modified montmorillonite, preparation, antibacterial property