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چکیده
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In this study, water activities of the PVP + NaCl + H2O system have been determined experimentally using the improved isopiestic method at (298.15, 308.15 and 318.15) K. The effect of temperature on the constant water activity lines has been studied. Furthermore, the extended Flory-Huggins theory with temperature-dependent parameters has been used for the correlation of the experimental water activity data.
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