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http://dx.doi.org/10.12925/jkocs.2015.32.3.386

Thixotropic Equation and Rheological Parameters on Non-Newtonian Flow Mechanism  

Kim, Nam Jeong (Department of Chemistry, Sahmyook University)
Publication Information
Journal of the Korean Applied Science and Technology / v.32, no.3, 2015 , pp. 386-393 More about this Journal
Abstract
The rheological properties of complex materials such as colloid dispersion show complicated non-Newtonian flow phenomena when they are subjected to shear flow. These flow properties are controlled by the characteristics of flow units and the interactions among the flow segments. The rheological parameters of relaxation time $({\beta}_2)_0$, structure factor $C_2$ and shear modulus $X_2/{\alpha}_2$ for various thixotropic flow curves was obtained by applying thixotropic equation to flow curves. The variations of rheological parameters are directly related to non-Newtonian flows, viscosities and activation energies of flow segments.
Keywords
colloid dispersion; rheological properties; non-Newtonian flow; rheological parameters; thixotropic equation;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 I. Wagstaff and C.E. Chaffey, "Shear thin ning and thickening rheology : I. Concentr ated acrylic dispersions", J. Colloid and Int erface Sci., 59, 53 (1977).   DOI
2 C. H. Lee, V. Moturi, Y. Lee, "Thixotropic property in pharmaceutical formulations", Journal of Controlled Release, 136, 88 (2009).   DOI
3 Y. S. Lee and J. Ree and T. Ree, "Effect of zeta-potential on the viscosity of clay-water suspension", Bull. Korean Chem. Soc., 3(3), 83(1982).
4 J. H. Bang, N. J. Kim, S. W. Choi, E. R. Kim, and S. J. Hahn, "The equilibrium between dilatant and thixotropic flow units", Bull. Korean Chem. Soc., 17, 262(1996).
5 J. Lin, Z. Wen, Y. Liu, X. Xu, S. Song, N. Li, "Rheological behavior of aqueous polymer-plasticized ${\gamma}-LiAlO_2$ pastes for plastic forming", Ceramics International, 35, 2289 (2009).   DOI
6 R. Durairaj, S. Ramesh, S. Mallik, A. Seman, and N. Ekere, "Rheological characterisation and printing performance of Sn/Ag/Cu solder pastes", Materials &Design, 30, 3812 (2009).   DOI
7 B. S. Ghotra, T. Vasanthan, and F. Temelli, "Rheological properties of aqueous blends of high purity barley ${\beta}$-glucan with high purity commercial food gums", Food Chemistry, 117, 417 (2009).   DOI
8 T. Lemke, F. Bagusat, K. Kohnke, K. Husemann, and H. J. Mogel, "Time dependent viscosity of concentrated alumina suspensions", Colloids and Surfaces A: Physicochemical and Engineering Aspects, 150, 283 (1999).   DOI
9 J. Mewis and R. de Bleyser, "Dynamic behavior of thixotropic systems", J. Colloid and Interface Sci., 40(3), 360(1972).   DOI
10 N .J. Kim, "Thixotropic properties of polyacrylamide hydrogels with various synthetic conditions", Journal of the Korean Chemical Society, 50, 447 (2006).   DOI
11 S. J. Hahn and T. Ree and H. Eyring, "A theory of thixotropy", JNLGI Spokesman, 21, 12(1957).
12 S. J. Hahn and T. Ree and H. Eyring, "Flow mechanism of thixotropic substances", JNLGI Spokesman, 23, 129(1959).