Evaluation of viscosities of aqueous two-phase systems containing protein |
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Authors: | Gündüz Ufuk |
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Institution: | Kimya Mühendisli?i Bölümü, Mühendislik ve Mimarl?k Fakültesi, Gazi Üniversitesi, 06570 Ankara, Turkey |
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Abstract: | The dynamic viscosities of aqueous polyethylene glycol, aqueous bovine serum albumin, and polyethylene glycol-bovine serum albumin-water solutions were measured at temperatures of 15, 20, 25, 30 and 35 degree C. To estimate the viscosity values of polyethylene glycol-bovine serum albumin-water solutions, a one parameter Grunberg-like model which was satisfactorily used earlier by the present author for polyethylene glycol-dextran-water solutions was employed. The disposable parameter a for our temperature range was estimated as 3.71. The relative errors varying from 0.29 to 18.98 in absolute value indicates that the Grunberg-like model works perfectly for polymer-protein solutions as well. |
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Keywords: | Grunberg equation Viscosity Aqueous two-phase systems Polyethylene glycol Bovine serum albumin |
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