摘要
以十六烷基三甲基溴化铵(CTAB)为有机改性剂处理钠基蒙脱土(Na-MMT),制备了有机蒙脱土(CTAB-MMT),再以CTAB-MMT为插层剂,通过熔融挤出制备了聚己内酯(PCL)/CTAB-MMT纳米复合材料。采用SEM和XRD对MMT和纳米复合材料的结构进行了表征,并测试了纳米复合材料的力学性能。结果表明:CTAB-MMT的片层结构比Na-MMT连续性更好,片层间距由原来的1.51nm增加到1.95～3.32nm;CTAB-MMT在PCL基体中分散更均匀;与纯PCL相比,PCL/CTAB-MMT纳米复合材料的拉伸强度提高了10.2%,而弯曲强度提高了19.5%。
Na-MMT was treated by CTAB as organic modification agent to prepare CTAB-MMT. Taking CTAB-MMT as intercalation agent, PCL/CTAB-MMT nanocomposite was prepared by melting extrusion. The structure of MMT and nanocomposite were characterized by SEM and XRD, the mechanical properties of the nanocomposite were tested. The results showed that the layer structure of CTAB-MMT is more consecutive than that of Na-MMT, the interlayer distance increases from 1.51nm to 1.95-3.32nm; the distribution of CTAB-MMT in PCL matrix is more uniform; compared with pure PCL, the tensile strength and flexural strength of PCL/CTAB-MMT nanocomosite increase by 10.2% and 19.5% respectively.
出处
《塑料科技》
CAS
北大核心
2009年第7期25-28,共4页
Plastics Science and Technology
基金
西南科技大学校科研基金(2004001051)
关键词
聚己内酯
有机蒙脱土
熔融插层
纳米复合材料
Polycaprolactone
Organic montmorillonite
Melt intercalation
Nanocomposite
