AbstractsChemistry

The effect of surrounding media on cellulose.

by Forestier. Walker




Institution: McGill University
Department: Department of Chemistry.
Degree: PhD
Year: 1937
Keywords: Chemistry.
Record ID: 1570287
Full text PDF: http://digitool.library.mcgill.ca/thesisfile132213.pdf


Abstract

Adsorption and desorption isotherms for water on standard cellulose were measured at two different temperatures, the heats of adsorption and desorption calculated and found tobe in qualitative agreement with previously measured heats of wetting as determined in an adiabatic calorimeter.It was definitely proved that the hysteresis which occurs in the adsorption and desorption of water by cellulose is not affected by the pressureof residual permanent gases. The apparent density of water adsorbed on standard cellulose at various concentrations was determined with ahigher degree of accuracy than had been previously obtained, by employing a modification of the apparatus used by other investigators. [...]