Thermally Stable Organically Modified Layered Silicates Based on Alkyl Imidazolium Salts
Document Type
Article
Publication Date
2-15-2012
School
Polymer Science and Engineering
Abstract
A series of imidazolium salts having various substituents and functional groups were synthesized and characterized by FTIR and NMR spectroscopy. Organic modification of natural and synthetic layered silicates involving montmorillonite (MMT), laponite (lap), and synthetic mica (mica) was carried out by ion-exchange reaction. The obtained organo-clays were characterized by FTIR and powder X-ray diffraction techniques. Results indicate that these organically modified clays have much higher thermal stabilities compared to their corresponding imidazolium halides. It was also observed from TGA analysis that thermal stability does not depend on the functional group present at the 3-position of the imidazolium salts. These studies strongly supports premise that the removal of halide is necessary to improve the thermal stability of the organo-clay produced. (C) 2011 Elsevier Inc. All rights reserved.
Publication Title
Journal of Colloid and Interface Science
Volume
368
Issue
1
First Page
366
Last Page
371
Recommended Citation
Goswami, S. K.,
Ghosh, S.,
Mathias, L. J.
(2012). Thermally Stable Organically Modified Layered Silicates Based on Alkyl Imidazolium Salts. Journal of Colloid and Interface Science, 368(1), 366-371.
Available at: https://aquila.usm.edu/fac_pubs/258