采用力化学方法制备蒙脱土/聚氨酯医用纳米材料(英文)  

Montmorillonite/polyurethane nano medical composite prepared by mechano-chemistry methods

作　　者：张丽[1] 敖宁建[1] 

机构地区：[1]暨南大学生物医学工程系,广东广州510632

出　　处：《合成橡胶工业》2007年第4期309-309,共1页China Synthetic Rubber Industry

基　　金：Supported by Open Foundation of Nation Key Laboratory of Polymer Science and Engineering,Sichuan Univer-sity.

摘　　要：采用酰胺和醇作为扩层剂,以超声、磨盘和胶体磨等力化学方法直接由钠基蒙脱土制得纳米蒙脱土,并与聚氨酯复合制备纳米医用复合材料。通过X射线衍射和扫描电镜法对蒙脱土结构及分散状态进行分析,并测定了复合材料的力学性能。结果表明,蒙脱土片层剥离,厚度达30～90nm,片层面积减至1～10μm,蒙脱土在基质中分布均匀,无团聚现象。当蒙脱土质量分数为3%时,其拉伸强度从34.6MPa提高至46.4MPa,而扯断伸长率无明显下降,表明可采用工艺简单、成本低的力化学方法制备纳米医用聚氨酯复合材料。Because of its outstanding properties such as biocompatibility, chemical-resistance property, polyurethane （PU） is proverbially used in medical treatment, as the implanting heart valves, artificial hearts, catheters and medical gloves as well as condoms. For the purpose of further extending its application, many researches focus on the preparation of nano- PU composite by using organic montmorillonite （MMT）, nanoSiO2 and nano-CaCO3.

关 键 词：蒙脱土 力化学 聚氨酯 纳米医用复合材料 

分 类 号：TB383.1[一般工业技术—材料科学与工程]