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Factors Affecting the Grafting of Aminopropyltriethoxysilane in Swelling Clay Materials  

Shanmugharaj, A.W. (Industrial Liaison Research Institute and College of Environment and Applied Chemistry Kyung Hee University)
Lee, Kyong-Yop (Center for Media Transport System School of mechanical Engineering and Industrial System Engineering Kyung Hee University)
Ryu, Sung-Hun (Industrial Liaison Research Institute and College of Environment and Applied Chemistry Kyung Hee University)
Publication Information
Elastomers and Composites / v.41, no.4, 2006 , pp. 238-244 More about this Journal
Abstract
Functionalization of montmorillonite clay has been done using 3-aminopropyltriethoxy silane using water as a dispersing medium. Qualitative evidence of the presence or silane attached to the clay surface has been identified using Fourier transform infrared spectroscopy (FT-IR). Increase in silane concentration decreases the adsorbed/intercalated ratio calculated using differential thermogravimetric analysis (DTG). Average d-spacing calculated using X-ray diffraction initially increases with silane concentration and decreases slightly at higher silane concentration. The influence of processing temperature on the silane functionalization of clay has also been investigated and it shows that chemical grafting of silane on the clay surface is observed with increasing processing temperature.
Keywords
montmorillonite; 3-aminopropyltriethoxysilane; solvent surface energy; adsorption; intercalation;
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