Influence of polyvinylpyrrolidone adsorption on stability of silica aqueous suspension - effects of polymer concentration and solid content
 
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1
University of Granada
2
Maria Curie-Skłodowska University, Faculty of Chemistry
3
Institute of Surface Chemistry, Ukraine
CORRESPONDING AUTHOR
Małgorzata Wiśniewska   

Maria Curia-Sklodowska University, Faculty of Chemistry, Maria Curie-Skłodowska Sq. 3, 21-030 Lublin, Poland
Publication date: 2016-12-01
 
Physicochem. Probl. Miner. Process. 2017;53(1):121–135
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ABSTRACT
The influence of polyvinylpyrrolidone (PVP) adsorption on the silica suspension stability was studied. The effects of silica content, polymer addition and suspension dilution with water were examined. The turbidimetry method was applied to examine stability of the investigated systems as a function of time. It was shown that the suspension without polymer was characterized by the smallest stability, whereas the systems containing PVP (before and after dilution) are successively stable. The specific conformation of PVP chains on the solid surface is responsible for the stabilization–flocculation properties of PVP in the colloidal suspension.
eISSN:2084-4735
ISSN:1643-1049