According to physical and chemical designs, a novel modified kaolinite/carboxymethyl starch (CMS) nanocomposite was synthesized with a displacement method with dimethyl sulfoxide modified kaolinite as an intermediate. The material characterizations were carried out by X‐ray diffraction, transmission electron microscopy, thermogravimetric analysis, and scanning electron microscopy. The analyses showed that kaolinite was dispersed at the nanometer‐scale segments into the CMS matrix. The electrorheological behavior of the modified kaolinite/CMS hybrid nanocomposite dispersed in silicone oil was investigated. Under electric field strength (E) = 4 kV/mm and shear rate , the shear stress of the modified kaolinite/CMS nanocomposite electrorheological fluid could be up to 8380 Pa, which was 10.4 times that of the electrorheological fluid at zero field. The modified kaolinite/CMS nanocomposite electrorheological fluid also exhibited good sedimentation properties.
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Zhao et al. (2008) studied this question.
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