Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/69751
Type: Artigo de periódico
Title: ORGANOPHILIC BENTONITES BASED ON ARGENTINEAN AND BRAZILIAN BENTONITES. PART 1: INFLUENCE OF INTRINSIC PROPERTIES OF SODIUM BENTONITES ON THE FINAL PROPERTIES OF ORGANOPHILIC BENTONITES PREPARED BY SOLID-LIQUID AND SEMISOLID REACTIONS
Author: Paiva, LB
Morales, AR
Abstract: This study describes the influence of the intrinsic properties of raw materials on the organophilization of bentonites from Argentinean raw sodium bentonites and Brazilian sodium activated bentonites. The organophilization was done with two methodologies: solid-liquid and semisolid reactions. Correlations between the properties of sodium and organophilic bentonites were established. The effectiveness of the treatments was verified by X-ray diffraction, swelling capacity in water and xylene and SEM to evaluate the morphology of the particles. The analysis was done before and after the modification process. The bentonites had organic cations intercalated, as shown by the increase of the basal spacings, and the organophilic character was confirmed because the bentonites showed xylene swelling capacity and particles with an expanded aspect in comparison to those of the sodium bentonites. Both methodologies were efficient to obtain organophilic clays. The organophilic bentonites obtained from raw sodium bentonites :gave better results.
Subject: Bentonite
Montmorillonite
Distearyl dimethylammonium chloride
Organoclays
Country: Brasil
Editor: Brazilian Soc Chemical Eng
Rights: aberto
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
WOS000309948200010.pdf770.09 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.