Title of article
An improved isopiestic method for measurement of water activities in aqueous polymer and salt solutions
Author/Authors
Lin، نويسنده , , Dong-Qiang and Mei، نويسنده , , Le-He and Zhu، نويسنده , , Zi-Qiang and Han، نويسنده , , Zhao-Xiong، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1996
Pages
8
From page
241
To page
248
Abstract
The isopiestic method was described, and its advantages and disadvantages were discussed. A nine-legged glass apparatus was developed and the experimental procedure was improved. The time for equilibration was greatly reduced to 3 or 4 d, even for the high viscous solutions. The average relative error in the observed water activities for standard electrolyte solution was ±0.01%. The water activities of PEG1000 + H2O, PEG4000 + H2O, PEG + MgSO4 + H2O and PEG + (NH4)2SO4 systems were measured at 25°C.
Keywords
method , activity , Polymers , EXPERIMENTS , electrolytes , water
Journal title
Fluid Phase Equilibria
Serial Year
1996
Journal title
Fluid Phase Equilibria
Record number
1980322
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