Infrared spectroscopy of organoclays synthesized with the surfactant octadecyltrimethylammonium bromide

Xi, Yunfei and Ding, Zhe and He, Hongping and Frost, Ray L. (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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DOI : 10.1016/j.saa.2004.05.001

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

ID Code:	787
Item Type:	Journal Article
Additional Information :	Co-author, Hongping He is affiliated with Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou 510640, China
Keywords :	infrared spectroscopy, octadecyltrimethylammonium bromide, montmorillonite, surfactant
ISSN:	1386-1425
Subjects:	Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)
Divisions:	QUT Faculties and Divisions > Faculty of Science and Technology
Copyright Owner :	Copyright 2005 Elsevier
Copyright Statement :	Reproduced in accordance with the copyright policy of the publisher: This journal is available online.
Deposited On:	14 Mar 2005
Last Modified:	23 Jan 2009 03:53

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