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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2015, 15 (1), 47—55. |
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Non-Newtonian Flow of Structured Systems. XIV. Viscosity Curves in Reduced Coordinates
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E. A. Kirsanov, Yu. N. Timoshin
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Author affiliations
Moscow State Region Socio-Humanitarian Institute,
30 Zelenaya St., Kolomna, Moscow Region, 140411, Russia
E-mail: Kirsanov47@mail.ru
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Abstract
Reduced coordinates are often used for experimental data linearization. Rheological data are approximated by a straight line on a certain range of shear rate or shear stress. Approximate form of generalized flow equation makes it possible to define linear dependence on the middle range in the root coordinates η1/2 – τ1/2. The possibility of linearization of the rheological data for molten polystyrene, polypropylene, polyethylene, a polymer solution, an aqueous suspension of polyvinyl acetate is shown.
Keywords: dispersed and polymer systems, non-Newtonian flow, generalized flow equation, linearization, reduced coordinates
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