Infrared spectroscopy of organoclays synthesized with the surfactant octadecyltrimethylammonium bromide
(2005) Infrared spectroscopy of organoclays synthesized with the surfactant octadecyltrimethylammonium bromide. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy 61(3):pp. 515-525.
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Abstract
Infrared spectroscopy using a smart endurance single bounce diamond ATR cell has been used to study the changes in the spectra of the surfactant octadecyltrimethylammonium bromide upon intercalation into a sodium montmorillonite. The wavenumbers of bands attributed to CH stretching and bending vibrations in general decrease as the concentration of the surfactant measured in terms of the cation exchange capacity (CEC) up to 1.0 CEC. After this point the bands increase approaching a value the same as that of the surfactant. Significant changes occur in the HCH deformation modes of the methyl groups of the surfactant. These changes are attributed to the methyl groups locking into the siloxane surface of the montmorillonite. Such a concept is supported by changes in the SiO stretching bands of the montmorillonite siloxane surface
| Item Type: | Journal Article |
|---|---|
| RM Number: | 2006001481 |
| Status: | Published |
| Refereed: | Yes |
| Keywords: | infrared spectroscopy, octadecyltrimethylammonium bromide, montmorillonite, surfactant |
| Subjects: | 250000 Chemical Sciences > 250200 Inorganic Chemistry |
| ID Code: | 787 |
| Deposited By: | Callan, Paula |
| Deposited On: | 14 March 2005 |
| Alternative Locations: | http://dx.doi.org/10.1016/j.saa.2004.05.001 |
| Copyright Owner: | Copyright 2005 Elsevier |
| Copyright Statement: | Reproduced in accordance with the copyright policy of the publisher: This journal is available online. |
| Additional Information: | Co-author, Hongping He is affiliated with Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou 510640, China |