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Citation: DAI Xiao-Nan, HOU Wan-Guo, LI Shu-Ping. Influences of Electrolyte and Polymer on the Thixotropy of Magnesium-Aluminum Hydroxide-Kaolinite Suspension[J]. Chinese Journal of Applied Chemistry, ;2002, 19(4): 338-341. shu

Influences of Electrolyte and Polymer on the Thixotropy of Magnesium-Aluminum Hydroxide-Kaolinite Suspension

1.
a Key Laboratry for Colloid and Interface Chemistry of Edcation Ministry, Shandong University, Jinan 250100;
2.
b Department of Chemistry, Dezhou College, Dezhou

Corresponding author: HOU Wan-Guo,
Received Date: 18 September 2001
Available Online: 14 December 2001
Fund Project: 国家自然科学基金(29873026) (29873026)山东省自然科学基金(Y97B01024)资助项目 (Y97B01024)

The influences of electrolytes(NaCl、MgCl₂ and AlCl₃) and partially hydrolyzed polyacrylamide (PHPA) on the thixotropy of magnesium aluminum mixed metal hydroxide(Mg-Al-MMH) kaolinite suspension have been studied. The results show that the thixotropic fluid type of Mg-Al-MMH kaolinite suspension with mass ratio of MMH to kaolinite R=0.029 was independent of the concentration of the electrolytes, whereas increase in electrolyte concentration could cause Mg-Al-MMH kaolinite system with R=0.129 to be transformed from complex thixotropy to positive thixotropy. With the increase of PHPA content, the thixotropic type of the MMH kaolinite suspension with R=0.029 transformed from positive thixotropy to complex thixotropy and the suspension with R=0.129 from complex to negative thixotropy. All the three electropytes and PHPA could reduce the viscosity of the Mg-Al-MMH kaolinite suspensions. The mechanism of the thixotropy has been discussed briefly.
- hydrotalate-like compound,
- kaolinite,
- thixotropy,
- rheology
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