From the temperature viscosity data the various thermodynamic parameters were determined. It was observed that the free energy of viscous flow increase with the increase of concentration, but the effect with rise in temperature is uncertain. However, the value of DELTA-G(v) of PVA in aqueous propyl alcohol were found to be high than water. It means that associations are high in water than aqueous Propyl alcohol solutions. The values of heat and entropy of activation of viscous flow increases with concentration but no generalization can be made due to its irregular pattern at various temperature. The values of heat and entropy of activation show that solution of the polymer in aqueous propyl alcohol have a high order, whereas in water have low, but in no case there is complete order.
A RASHID ,A K BHETTANI ,N HAMAD ,M S KHAN ,
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