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用基于X射线衍射分析(XRD)的插层率、基于热重分析(TGA)的热失重率和基于红外光谱分析(FTIR)的3600cm-1谱带与3700cm-1谱带强度比值对高岭石/二甲基亚砜(DMSO)插层复合物和高岭石/N-甲基甲酰胺(NMF)插层复合物的插层效率进行了综合评价。结果表明,当插层反应进行到1、6和25d,高岭石/DMSO的插层率分别为5%、52%和89%;而高岭石/NMF的插层率则分别为93%、94%和95%。与此同时,高岭石/DMSO的热失重率分别为1.06%、8.06%和17.46%;而高岭石/NMF的失重率分别为6%、6.5%和14.2%。在红外光谱图中,高岭石/DMSO复合物的3600与3700cm-1带强度比分别为1.03,1.141和1.628,而高岭石/NMF复合物分别为1.403,1.433和1.612。3种评价方法显示很好的一致性,相对而言,在插层作用的初期,XRD方法比较灵敏,而在插层作用的后期,TGA和FTIR方法则显得更为灵敏和有效。
The intercalation rates based on X-ray diffraction analysis (XRD), the thermogravimetric analysis (TGA) based on the weight loss ratio, and the ratio of the intensity of the 3600 cm-1 band to the 3700 cm-1 band based on infrared spectroscopy (FTIR) A comprehensive evaluation of the intercalation efficiency of the intercalation complexes of stone / dimethylsulfoxide (DMSO) and kaolinite / N-methylformamide (NMF) was carried out. The results showed that the intercalation rates of kaolinite / DMSO were 5%, 52% and 89% respectively when the intercalation reaction proceeded to 1,6 and 25 days, while the intercalation rates of kaolinite and NMF were 93% , 94% and 95%. Meanwhile, the thermal weight loss rates of kaolinite / DMSO were 1.06%, 8.06% and 17.46% respectively, while the weight loss rates of kaolinite / NMF were 6%, 6.5% and 14.2% respectively. In the IR spectra, the intensity ratios of the kaolinite / DMSO complexes at 3600 and 3700 cm-1 were 1.03, 1.141 and 1.628, respectively, while the kaolinite / NMF complexes were 1.403, 1.433 and 1.612.3, respectively In contrast, the XRD method is more sensitive in the early stages of intercalation, whereas TGA and FTIR methods appear to be more sensitive and effective later in the intercalation.