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Application of phenyl salicylate-sepiolite systems as ultraviolet radiation filters

Published online by Cambridge University Press:  09 July 2018

C. del Hoyo ,
M. A. Vicente  and
V. Rives
C. del Hoyo
Affiliation:
Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
M. A. Vicente
Affiliation:
Instituto de Recursos Naturales y Agrobiología, CSIC, Cordel de Merinas, s/n, Salamanca, Spain
V. Rives*
Affiliation:
Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
*
1Corresponding author.
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Abstract

The interaction between phenyl salicylate and sepiolite has been studied using drugclay systems obtained by melting and grinding. The samples have been characterized by powder Xray diffraction, differential thermal and thermogravimetric analyses, and Vis-UV and FT-IR spectroscopies. ‘Free’ water molecules are steadily substituted by the drug molecules, without any chemical change as shown by FT-IR. The systems prepared improved the protecting ability of the pure sepiolite or the pure drug against ultraviolet radiation, especially in the so-called ‘C’ range (290-190 nm).

Type
Research Article
Information
Clay Minerals , Volume 33 , Issue 3 , September 1998 , pp. 467 - 474
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1998

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