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http://dx.doi.org/10.4191/KCERS.2002.39.11.1090

Preparation and Characterization of Bentonite Rheology Modifiers  

Lee, Suk-Kee (Department of Industrial Chemistry, Kyungil University)
Koo, Kwang-Mo (Department of Industrial Chemistry, Kyungil University)
Yang, Kyung-Su (Department of Polymer Science, Kyungpook National University)
Park, Sung-Woo (Department of Inorganic Materials Engineering, Kyungpook National University)
Lee, Byung-Kyo (Department of Inorganic Materials Engineering, Kyungpook National University)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.11, 2002 , pp. 1090-1096 More about this Journal
Abstract
Six different composition of water-swellable bentonite rheology modifiers(WSB-1~WSB-6) were prepared by the compounding of peptizers and anionic surfactants as an additives with Bentonite(BEN) of montmorillonite group. Average particle size, particle morphology and water-swellability of WSB and the viscosity with additives were measured, respectively. And the rheological behavior of WSB were investigated using the rheometer. The viscosity of WSB-1 increased with decreasing both pH and average particle size of BEN, WSB-2 treated $Na_2CO_3$ as a peptizer showed the maximum viscosity. These results can be interpretated cause for rearrangment as the edge-to-face structure of BEN particles containing WSB. Also, WSB-4∼WSB-6 containing both peptizer and anionic surfactant was sol phase that their viscosity was not nearly with the shear rate, however, WSB-3 containing Tetrasodium Pyrophosphate(TSPP) as an anionic surfactant showed the thixotropy by the viscosity difference of 1000 times with the shear rate. From this result, the anions of TSPP can be explained to arrange in edge of BEN particles containing WSB-3.
Keywords
Bentonite; Rheology modifier; Peptizer; Anionic surfactant; Thixotropy;
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Times Cited By KSCI : 1  (Citation Analysis)
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