Hato, MJZhang, KRay, SSChoi, HJ2012-01-122012-01-122011-05Hato, MJ, Zhang, K, Ray, SS and Choi, HJ. 2011. Rheology of organoclay suspension. Colloid and Polymer Science, Vol 289(10), pp 1119-11250303-402Xhttp://www.springerlink.com/content/c5h649q58317132v/http://hdl.handle.net/10204/5484Copyright: 2011 Springer. This is an ABSTRACT ONLYThe authors have studied the rheological properties of clay suspensions in silicone oil, where clay surfaces were modified with three different types of surfactants. Dynamic oscillation measurements showed a plateau-like behavior for all the organoclay suspensions studied, which indicated more solidlike characteristics. Shear stress results showed a non-Newtonian behavior over a wide applied shear range and increased at a high shear rate for all the organoclay suspensions. Shear-thinning behavior was observed for all the suspensions investigated. The results exhibited that G(t), which was calculated using the Schwarzl equation, increased with increasing the degree of hydrophobicity of the surfactant used for the modification of pristine clay surface and decreased with time following a downward curve. A similar trend to that of G(t) was also observed for all the organoclay suspensions when Coleman and Markovitz relation was used.enRheological propertyClaySuspensionHydrophobicityColloid sciencesPolymer sciencesArticleHato, M., Zhang, K., Ray, S., & Choi, H. (2011). Rheology of organoclay suspension. http://hdl.handle.net/10204/5484Hato, MJ, K Zhang, SS Ray, and HJ Choi "Rheology of organoclay suspension." (2011) http://hdl.handle.net/10204/5484Hato M, Zhang K, Ray S, Choi H. Rheology of organoclay suspension. 2011; http://hdl.handle.net/10204/5484.TY - Article AU - Hato, MJ AU - Zhang, K AU - Ray, SS AU - Choi, HJ AB - The authors have studied the rheological properties of clay suspensions in silicone oil, where clay surfaces were modified with three different types of surfactants. Dynamic oscillation measurements showed a plateau-like behavior for all the organoclay suspensions studied, which indicated more solidlike characteristics. Shear stress results showed a non-Newtonian behavior over a wide applied shear range and increased at a high shear rate for all the organoclay suspensions. Shear-thinning behavior was observed for all the suspensions investigated. The results exhibited that G(t), which was calculated using the Schwarzl equation, increased with increasing the degree of hydrophobicity of the surfactant used for the modification of pristine clay surface and decreased with time following a downward curve. A similar trend to that of G(t) was also observed for all the organoclay suspensions when Coleman and Markovitz relation was used. DA - 2011-05 DB - ResearchSpace DP - CSIR KW - Rheological property KW - Clay KW - Suspension KW - Hydrophobicity KW - Colloid sciences KW - Polymer sciences LK - https://researchspace.csir.co.za PY - 2011 SM - 0303-402X T1 - Rheology of organoclay suspension TI - Rheology of organoclay suspension UR - http://hdl.handle.net/10204/5484 ER -