Influence of dispersing medium on grafting of aminopropyltriethoxysilane in swelling clay materials

A M Shanmugharaj; Kyong Yop Rhee; Sung Hun Ryu

doi:10.1016/j.jcis.2005.12.049

Influence of dispersing medium on grafting of aminopropyltriethoxysilane in swelling clay materials

J Colloid Interface Sci. 2006 Jun 15;298(2):854-9. doi: 10.1016/j.jcis.2005.12.049. Epub 2006 Jan 20.

Authors

A M Shanmugharaj¹, Kyong Yop Rhee, Sung Hun Ryu

Affiliation

¹ Industrial Liaison Research Institute, College of Environment and Applied Chemistry, Kyung Hee University, Yongin, Kyunggi-Do 449701, South Korea.

PMID: 16427648
DOI: 10.1016/j.jcis.2005.12.049

Abstract

Functionalization of montmorillonite clay has been done using 3-aminopropyltriethoxysilane in the presence of various solvent media. Qualitative evidence of the presence of aminosilane attached to the clay platelets have been identified using Fourier transform infrared spectroscopy (FTIR) and 29Si and 13C solid-state nuclear magnetic resonance (NMR) spectroscopy. Grafting yield has been calculated using thermogravimetric analysis and total grafting yield increases with the solvent surface energy. X-ray diffraction studies of the silane functionalized montmorillonite clay exhibits two peaks, which may be attributed to intercalation and surface interaction with the broken edge platelets. Functionalized clay has been characterized by surface area measurements to understand the influence of solvents on the surface area of the functionalized clay.