Influence of ionic strength on the viscosities and water loss of bentonite suspensions containing polymers

Materials Research

Luciana Viana Amorim¹  Maria Ingrid Rocha Barbosa¹  Hélio De Lucena Lira¹  Heber Carlos Ferreira¹ 

[1] ,Universidade Federal de Campina Grande Programa de Recursos Humanos Campina Grande Paraíba ,Brazil

关键词: bentonite;    rheology;    polymer;    ionic strength;   

DOI  :  10.1590/S1516-14392007000100012

来源: SciELO

【 摘 要 】

A study was made of the influence of ionic strength (S) on the apparent (AV) and plastic (PV) viscosities and water loss (WL) of sodium bentonite suspension with polymers. Na-bentonite was dispersed in water (4.86% w/w) of different ionic strengths (S = 0.0, 0.015, 0.030 and 0.045 M) followed by the addition of polymer. Three polymer samples were studied, i.e., low viscosity carboxymethyl cellulose (CMC BV), polyanionic cellulose (PAC), and partially hydrolyzed polyacrylamide (HPAM). The results indicated that the presence of salts and increased salinity greatly influence the apparent and plastic viscosities and water loss of bentonite suspensions with polymer.

【 授权许可】

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