Nanocomposite materials based on polyurethane intercalated into montmorillonite clay
Nanocomposite materials based on polyurethane intercalated into montmorillonite clay
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DOI：
10.1016/j.msea.2005.04.019
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发表时间：
2005-06
期刊：
影响因子：
6.4
通讯作者：
A. Rehab;N. Salahuddin
中科院分区：
文献类型：
--
作者：
A. Rehab;N. Salahuddin
采用原位聚合法制备了聚氨酯有机粘土纳米复合材料。采用离子交换法将二乙醇胺或三乙醇胺插入蒙脱土中，制备了有机粘土。将有机粘土溶胀成不同种类的二醇，然后加入二异氰酸酯，合成了聚氨酯-有机粘土杂化物。通过扫描电镜和x射线衍射（XRD）分析，得到了具有分散结构的纳米复合材料。结果表明，MMT在聚合物基体中分布均匀，峰宽随强度的减小而变宽，峰距向较小的2θ偏移。热重分析表明，纳米复合材料的分解温度高于原始聚氨酯。
Polyurethane organoclay nanocomposites have been synthesized via in situ polymerization method. The organoclay has been prepared by intercalation of diethanolamine or triethanolamine into montmorillonite clay (MMT) through ion exchange process. The syntheses of polyurethane–organoclay hybrids were carried out by swelling the organoclay into different kinds of diols followed by addition of diisocyanate. The nanocomposites with dispersed structure of MMT was obtained as evidence by scanning electron microscope and X-ray diffraction (XRD). The results shows broaden with low intense and shift of the peak characteristic to d001spacing to smaller 2θ and the MMT is dispersed homogeneously in the polymer matrix. Also, the TGA showed that the nanocomposites have higher decomposition temperature in comparison with the pristine polyurethane.