Thixotropic Behavior of Hydrotalcite-Like Compound/Cationic Starch Suspensions: Effects of Mass Ratio of Hydrotalcite-Like Compound to Cationic Starch,Electrolyte, and Temperature |
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| Authors: | Yan Li Hao-Yu Bi Shuang-Long Shen Xiao-Ming Mao Cai-Rong Wang Yong-Sheng Jin |
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| Institution: | 1. Department of Chemistry , Changzhi College , Changzhi, P. R. China liyan_china@126.com;3. Department of Biomedicine Engineering , Changzhi Medical College , Changzhi, P. R. China;4. Department of Chemistry , Changzhi College , Changzhi, P. R. China |
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| Abstract: | The thixotropic behavior of Mg-Al hydrotalcite-like compound (HTlc)/cationic starch (CS) suspensions was investigated as a function of the mass ratio (> 0.08) of HTlc to CS, the electrolyte and the temperature, respectively. The thixotropy was studied by monitoring viscosity (η) change during the recovery process as a function of time (t) after the cessation of intensive shear. The results showed that the strength of negative thixotropy of the CS solution decreased with the increasing of electrolyte (NaCl, CaCl2, or AlCl3) concentration and the temperature. The thixotropic type of the HTlc/CS suspensions could transform from negative to complex, positive, complex, and then to negative thixotropy with the increasing of HTlc content if CS was the main component of the suspensions. In addition, the thixotropic type of the HTlc/CS suspensions transformed from original type to positive thixotropy with the increasing of electrolyte concentration and the temperature. |
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| Keywords: | Cationic starch electrolytes hydrotalcite-like compounds mass ratio of hydrotalcite-like compounds to cationic starch suspension thixotropy |
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