无机材料学报2012，Vol.27Issue(7)：780-784,5.DOI:10.3724/SP.J.1077.2011.12049
阳离子表面活性剂对钠基蒙脱土的插层改性研究
Investigation on Intercalation Modification of Sodium-montmoriilonite by Cationic Surfactant
摘要
Abstract
Sodium-montmorillonite (Na+-MMT) was intercalation modified with octadecyl trimethyl ammonium chloride (OTAC) in aqueous suspension via an ion exchange mechanism.Fourier transform infrared spectroscopy (FTIR) study indicates that OTAC is successfully intercalated into Na+-MMT layers and/or adsorbed on the surface of Na+-MMT.X-ray diffraction (XRD) analysis revealed that the interlayer spacing of the Na+-MMT was extended with the content of OTAC increasing,and the maximum spacing can reach about 3.80 nm.Results of scanning electron microscopy (SEM) analysis reveals the morphologies change from soherical-like particles to high-aspect ratio flakes after modification.Different configurations of OTA+ chains within MMT interlayer are proposed based on the above analysis.The results of contact angle and the dispersion analysis show that the surface wettability of Na+-MMT is converted from hydrophilic to organophilic.关键词
蒙脱石/插层改性/微结构/表面性能/纳米材料Key words
montmorillonite/ intercalation modification/ microstructure/ surface property/ nanomaterials分类
化学化工引用本文复制引用
刘华斌,肖汉宁..阳离子表面活性剂对钠基蒙脱土的插层改性研究[J].无机材料学报,2012,27(7):780-784,5.基金项目
National Natural Science Foundation of China (50972042) （50972042）
