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Transmission electron microscopy of hexadecyltrimethylammonium-exchanged smectite

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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: HEXADECYLTRIMETHYLAMMONIUM; INTERLAYER; MORPHOLOGICAL HETEROGENEITY; SMECTITE; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/0009855023730044

Publication date: September 1, 2002

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minsoc/cm/2002/00000037/00000003/art00006
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