Ethanol sorption and partial molar volume in cellulose acetate films

Autor:	Saima Kint, James R. Scherer, Barbara A. Bolton, G. F. Bailey
Rok vydání:	1986
Předmět:	Chromatography Chemistry General Engineering Analytical chemistry Sorption Partial molar property Cellulose acetate chemistry.chemical_compound Cellulose triacetate Membrane Adsorption Volume (thermodynamics) Physical and Theoretical Chemistry Absorption (chemistry)
Zdroj:	The Journal of Physical Chemistry. 90:1207-1211
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100278a049
Popis:	The absorption characteristics of cellulose acetate (CA398) and cellulose triacetate membranes for ethanol vapor were determined by integrated optical techniques. Changes in the refractive index and film thicknesses are used to calculate the ethanol concentration within the membrane, to calculate the partial molar volume of sorbed ethanol as a function of ethanol concentration, and to estimate the average void volume of the dry film. The refractive index is shown to be very sensitive to the available void space within the membrane. The average total void space for the films considered here was less than 1% of the dry polymer volume. 22 references, 6 figures, 1 table.
Databáze:	OpenAIRE
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