Effect of Anionic Dispersant on Rheological Properties of Acid-bentonite

Chem. J. Chinese Universities

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Effect of Anionic Dispersant on Rheological Properties of Acid-bentonite

LIANG Hu-Nan^1,2,3, LONG Zhu^1*, PI Cheng-Zhong², YANG Shu-Hui¹, ZHOU Xiao-Fan²

1. Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China;
2. Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China;
3. College of Applied Technology, Northeast Dianli University, Jilin 132012, China

Received:2008-06-06 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10
Contact: LONG Zhu

Abstract

Abstract: The effect of anionic dispersant(sodium polyacrylate) on rheological properties for 10%(mass fraction) acid-bentonite dispersion were studied. The results show that, among dispersion containing dispersant dosage of 0.2%, 0.4%, 0.6% and 0.8%, respectively, the dispersion containing 0.4% dispersant has the lowest shear stress, apparent viscosity and yield stress. In range of studying shear rate, dispersion containing 0.4% dispersant exhibited dilatant characteristic and others transformed rheology from pseudoplastic to dilatant characteristic. The result also show that the rheograms fitting Herschel-Bulkley model are well. The mechanism of rheological properties on acid-bentonite dispersion was also discussed.

Key words: Anionic dispersant, Acid-bentonite, Rheological property, Herschel-Bulkley model

CLC Number:

O648.2

TrendMD:

LIANG Hu-Nan^1,2,3, LONG Zhu^1*, PI Cheng-Zhong², YANG Shu-Hui¹, ZHOU Xiao-Fan². Effect of Anionic Dispersant on Rheological Properties of Acid-bentonite[J]. Chem. J. Chinese Universities, doi: .

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Effect of Anionic Dispersant on Rheological Properties of Acid-bentonite

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