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M. J. Hato, S. K Pillai, H. J. Choi, K. Zhang
The rheology of non-aquoeous suspension of modified eccabond fine (EBF) clay
Appl. Rheol. 23:3 (2013) 34870 (9 pages)
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This paper discusses the rheological properties of different contents of a commercially available Southern African clay,
Eccabond fine (EBF), modified with hexadecyl trimethyl ammonium bromide, and Cloisite 15A (C15A), modified with dimethyl
dehydrogenated tallow quaternary ammonium chloride dispersed in silicone oil. Focused-ion beam scanning electron
microscopy shows that both C15A and EBF clays have sheet-like morphologies, but the sheets are more compact in the case
of EBF clay. The rheological behavior of different suspensions was characterized by using a rheometer. The EBF suspensions
behaved like Bingham fluids and also exhibited higher degrees of viscoelasticity than the C15A suspensions. The Casson
model used to calculate the data of the yield stresses for the EBF suspensions was found to fit quite well with the flow curve
results. The EBF suspensions obeyed the Schwarzl relation, in which the relaxation modulus (G(t)) illustrated a plateau-like
behaviour for EBF suspensions compared to the C15A suspensions.
► Cite this publication as follows:
Hato MJ, Pillai SK, Choi HJ, Zhang K: The rheology of non-aquoeous suspension of modified eccabond fine (EBF) clay, Appl. Rheol. 23 (2013) 34870.
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