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中文摘要：
以高岭土为原料、甲醇/高岭石插层复合物为前驱体,用脂肪酸插层处理,制备得到系列脂肪酸/高岭石插层复合物。利用X射线粉末衍射（XRD）、红外光谱（FTIR）及透射电子显微镜对结构与形貌进行了表征,讨论相同实验条件下,不同链长的脂肪酸插层高岭石后层间距及形貌的变化规律。结果表明：随着碳原子数增加,高岭石插层复合物层间距亦增大,层间距在2.36~4.13 nm之间。高岭石复合物层间距与脂肪酸碳原子数变化呈正相关关系,表明不同碳原子数的脂肪酸在高岭石层间的排列方式相似。当碳原子数≥14时,高岭石片层的边缘开始出现卷曲,且随着碳原子数的增加,卷曲片层数目增多,卷曲程度增大。综合分析XRD和FTIR结果,结合脂肪酸分子空间尺寸,提出脂肪酸分子在高岭石层间的排列模型。
英文摘要：
Kaolinite intercalation compounds with fatty acids were synthesized by utilizing a methanol/kaolinite intercalation compound as an intermediate. X-ray diffraction （XRD）, Fourier transform infrared spectracopy （FTIR） and transmission electron microscope were used to characterize the products. The effect on basal spacing and morphology of fatty acids inserted kaolinite by different fatty acid chain was discussed. The results showed that the interlayer space of kaolinite intercalation compounds increased with the corresponding increment of carbon chain length of fatty acid and ranged from 2.36 to 4.13 nm. There was a positive correlation between the interlayer space of kaolinite composites and the changes of fatty acid carbon number. It indicated that the molecules of fatty acid were arranged similarly in kaolinite. When the number of fatty acid carbon atoms ≥ 14, the edge of kaolinite layers begin to roll. The more productivity and the more curl of kaolinite layers, the longer the carbon chain length of fatty acid will be. A possible arrangement model of fatty acids in kaolinite was suggested through analyzing the results of XRD and FTIR combining with the spatial dimensions of fatty acid molecules.
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