The Influence of pH on the Thixotropy of Ferric Aluminum Magnesium Hydroxide/Montmorillonite Suspension

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (9): 1763.

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The Influence of pH on the Thixotropy of Ferric Aluminum Magnesium Hydroxide/Montmorillonite Suspension

LI Shu-Ping¹, HOU Wan-Guo¹, DAI Xiao-Nan¹, Hu Ji-Fan², LI Dong-Qing³

1. Key Laboratoryf or Colloidand Interface Chemistryof Education Ministry;
2. Department of Physics, Shandong University, Jinan 250100, China;
3. Universityof Toronto, Toronto, Ontario, Canada M5S3G8

Received:2001-08-03 Online:2002-09-24 Published:2002-09-24

Abstract

Abstract: In this paper, we studied the influence of pHon the thixotropy of MMH/MTsuspension, and it was found that pHcould affect the type of thixotropy: when the mass ratio of MMHto MT(R) was relatively low(0, 0.012 and 0.051), with pHrising slowly, the suspension changed from negative thixotropy to complex thixotropy, then finally to positive thixotropy; when m(MMH)/m(MT) was relatively high(0.091), with pHrising gradually, the suspension changed from complex thixotropy to negative thixotropy. The mechanism of thixotropy is also discussed.

Key words: Mixed metal layered hydroxide, Montmorillonite, Suspension, Thixotropy, Rheology

CLC Number:

O648.15

TrendMD:

LI Shu-Ping, HOU Wan-Guo, DAI Xiao-Nan, Hu Ji-Fan, LI Dong-Qing. The Influence of pH on the Thixotropy of Ferric Aluminum Magnesium Hydroxide/Montmorillonite Suspension[J]. Chem. J. Chinese Universities, 2002, 23(9): 1763.

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The Influence of pH on the Thixotropy of Ferric Aluminum Magnesium Hydroxide/Montmorillonite Suspension

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