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Rheological Behavior of Nanoclay Containing Nanofluids

Published online by Cambridge University Press:  04 February 2011

Jeffrey C. Munro  and
YuanQiao Rao
Jeffrey C. Munro
Affiliation:
Core R&D Labs, The Dow Chemical Company, 2301 N. Brazosport Blvd., Freeport, TX 77541, U.S.A.
YuanQiao Rao
Affiliation:
Core R&D Labs, The Dow Chemical Company, 2301 N. Brazosport Blvd., Freeport, TX 77541, U.S.A.
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Abstract

A synthetic hectorite nanoclay, Laponite®, with a disc shape (20 – 30 nm in diameter and 1 nm in thickness) was used as a model nanoparticle to prepare dispersions in water and different organic solvents. Although up to 20 wt% of nanoclay can be dispersed in water to form a low-viscosity stable colloidal sol, dispersions in organic solvents behave differently. The effect of the dielectric constant of the medium on the viscosity of the dispersion was studied systematically using two series of water-organic solvent miscible blends. Changes in the rheological behavior of the dispersions suggest that the dielectric constant of the organic solvent is a determining factor in the sol-gel transition of a nanoclay-containing nanofluid.

Keywords

colloidnanoscalefluid
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1312: Symposium HH/II/JJ – Polymer-Based Materials and Composites—Synthesis, Assembly and Applications , 2011 , mrsf10-1312-ii06-03
Copyright
Copyright © Materials Research Society 2011

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References

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