کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
609940 | 880634 | 2010 | 8 صفحه PDF | دانلود رایگان |

Functionalization of Brazilian São Simão kaolinite and Spanish Yunclillos saponite with the alkoxysilanes 3-aminopropyltriethoxysilane and 3-mercaptopropyltrimethoxysilane is reported. The resulting hybrids were characterized by X-ray diffraction, thermal analysis, infrared absorption spectroscopy, and scanning electron microscopy, which demonstrated the effectiveness of the interlamellar grafting process. The X-ray diffractograms revealed incorporation of the alkoxide molecules into the interlayer space of the clays. The displacement of the stretching bands of interlayer hydroxyls in the infrared spectra of the modified kaolinites and the increased intensity of the Mg–OH vibrations in the spectra of the modified saponites confirmed the functionalization of the clays. The thermal behavior of the organoclays confirmed the stability of the hybrids, which was dependent on the clay used for preparation of the materials.
Kaolinite, previously intercalated with dimethyl sulfoxide, and saponite, has been successfully functionalized with the alkoxysilanes 3-aminopropyltriethoxysilane (APTS) and 3-mercaptopropyltrimethoxysilane (MPTMS).Figure optionsDownload high-quality image (52 K)Download as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 341, Issue 1, 1 January 2010, Pages 186–193