Measurement of the ionic conductance of regenerated cellulose membranes in alkaline solutions with attention to current refraction
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A novel cell is described for making measurements of membrane conductivity by an a.c. technique. Membrane resistance was determined from measurements of the cell resistance for various numbers of membrane layers. Plots of resistance vs. membrane thickness were curved due to current refraction into the region clamped between the mating faces of the cell. A non-empirical correction was made for this refraction which linearized the data and enabled accurate values of membrane conductance to be achieved. Conductance and thickness values for regenerated cellulose membranes in CsOH, KOH, NaOH and LiOH over a wide range of concentrations are reported.
KeywordsCellulose Physical Chemistry Refraction Ionic Conductance Alkaline Solution
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