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A contribution to the study of the catalytic action of clays on the polymerization of styrene: I. Characterization of polystyrenes

Published online by Cambridge University Press:  09 July 2018

D. Njopwouo ,
G. Roques  and
R. Wandji
D. Njopwouo
Affiliation:
Laboratoire de Chimie Minérale Appliquée, Faculté des Sciences, B.P. 812 Yaoundé, Cameroun
G. Roques
Affiliation:
Laboratoire de Chimie Physique Macromoléculaire, ENSIC, 1 rue Grandville, 54042 Nancy, France
R. Wandji
Affiliation:
Laboratoire de Chimie Minérale Appliquée, Faculté des Sciences, B.P. 812 Yaoundé, Cameroun
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Abstract

Three clay samples (a kaolinite, a halloysite and an inseparable mixture of kaolinite-palygorskite-illite-montmorillonite) were, after a mild pretreatment, successfully tested as catalysts in the polymerization of styrene. The catalytic activity of the clay (measured by the conversion rate), the MW and the colour of the polystyrene obtained depended not only on the chemical composition and the structure of the clay catalyst but also on its concentration in the medium. The polystyrenes obtained on the clay catalyst were composed of two groups of macromolecules, one with low MW and the other with high MW.

Type
Research Article
Information
Clay Minerals , Volume 22 , Issue 2 , June 1987 , pp. 145 - 156
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

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