PREPARATION OF KAOLINITE /ORGANIC INTERCALATION COMPOUNDS BY SONOCHEMISTRY METHOD

A few kinds of kaolinite/organic intercalation compounds were prepared by sonochemistry method.The different structures of kaolinite from different regions,intercalation effects and the relationships between them were analyzed by an infrared spectroscope,X-ray diffraction and transmission electron microscope.The results show that hydrated kaolinite and halloysite have higher intercala-tion ability for holding high structural stress.The intercalation products,effects and mechanism were also studied under a range of conditions and intercalating agents.The results show that using kaolinite/dimethylsulphoxide as an intermediate,ethanol molecules are intercalated into kaolinite under 60 ℃ for 3 h by sonochemistry method,but the intercalation radio of dimethylsulphoxide is supe-rior to ethanol 43.4%.When sodium methoxide reacted with kaolinite,it grabbed the hydrogen in hydroxy from hydrated kaolinite or halloysite and broke the hydrogen bonds between kaolinite interlayers and lead to exfoliate the partly kaolinite.