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Abstract

Equilibrium water adsorption data, obtained by immersing dry rayon or other dry fibers in an organic solvent containing water at 30°C, were determined at different concentrations of water in the solvent by the Karl Fischer method and were plotted against the concentrations of water to obtain the adsorption isotherm. For ethyl acetate and other solvents, sigmoidal curves of the adsorption isotherms were obtained which were similar to those resulting from adsorption of moisture on the fiber in gaseous media at the same temperature. The Brunauer-Emmett-Teller (BET) equation was used for those sigmoidal curves, and the specific surface areas of the fibers were evaluated from the BET plots. There was fair agreement among the results for liquid media compared with those for gaseous media and those found in the literature.

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The Adsorption of Water by Fibers Immersed in Organic Solvents

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