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Paper Information

Journal:   IRANIAN POLYMER JOURNAL (ENGLISH)   FEBRUARY 2005 , Volume 14 , Number 2 (56); Page(s) 181 To 184.
 
Paper: 

VISCOSITY MEASUREMENTS AND MODELLING OF AQUEOUS POLYVINYL ALCOHOL MIXTURES

 
 
Author(s):  MODARES H.*, MOHSEN NIA M., MOSTAFA R.
 
* Department of Chemical Engineering, Amir-Kabir University of Technology, Tehran, I.R. Iran
 
Abstract: 

AHaake viscometer was used for viscosity measurements of aqueous polyvinyl alcohol mixtures at temperatures of 288, 298, and 308 K. It was observed that at low concentration of polyvinyl alcohol, variations of the measured shear stress (τ) versus shear rate (γ) were linear and therefore, the Newtonian behaviour of the studied mixtures is considered. The modified Eyring viscosity model previously proposed by the authors was used to test the measured data for aqueous polyvinyl alcohol mixtures. It was shown that the model is well capable to fit the data and the parameters, of the modle are evaluated.

 
Keyword(s): POLYVINYL ALCOHOL, VISCOSITY, HAAKE VISCOMETER, EYRING EQUATION
 
References: 
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