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Transmission electron microscopy of hexadecyltrimethylammonium-exchanged smectite

Published online by Cambridge University Press:  09 July 2018

Seung Yeop Lee  and
Soo Jin Kim
Seung Yeop Lee*
Affiliation:
School of Earth and Environmental Sciences, Seoul National University, Seoul 151-742, Korea
Soo Jin Kim
Affiliation:
School of Earth and Environmental Sciences, Seoul National University, Seoul 151-742, Korea
*
*E-mail: lsyblue@hanmir.com
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Abstract

The morphological and structural changes in smectite caused by hexadecyltrimethylammonium (HDTMA) treatment were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The HDTMA-exchanged smectite shows not only morphological features such as irregular, wavy surface with curled edges, but also structural features such as large d-spacings (20 – 26 Å ) and lattice distortions. The surface morphological heterogeneity is assumed to be related to the inhomogeneous intercalation of HDTMA cations into the interlayer of smectite.

Keywords

smectitehexadecyltrimethylammoniumX-ray diffractiontransmission electron microscopymorphological heterogeneityinterlayer
Type
Research Article
Information
Clay Minerals , Volume 37 , Issue 3 , September 2002 , pp. 465 - 471
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2002

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