YANG Shu-qin 1, 2, YUAN Peng1, HE Hong-ping 1, LIU Dong 1, QIN Zong-hua 1, ZHU Jian-xi 1,
(1. CAS Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China )
Abstract：The interactions between γ-aminopropyltriethoxysilane (APTES) and kaolinite with different degree of order were investigated. The samples were characterized by using X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and elemental analysis. The obtained results suggests that the APTES is grafted onto the interlayer hydroxyls of kaolinite. The diffusion rate of DMSO is faster than the accession rate of APTES in higher-defect kaolinite under the same reaction temperature, leading to different grafted degree.
Key words: kaolinite; degree of order; organosilane; grafting
E-mail: qiuhn@gig.ac.cn
ACTA MINERALOGICA SINICA Vol. 32, No. 4, 2012, Page 468-474
