Kinetic Studies of the Wool-Water System
- 1 June 1960
- journal article
- Published by SAGE Publications in Textile Research Journal
- Vol. 30 (6) , 443-450
- https://doi.org/10.1177/004051756003000605
Abstract
Studies have been made of the sorption of water by wool fibers, after changes of the external water vapor pressure, by following the weight changes of the fibers. The sorption kinetics are dependent on the size of the concentration change and the initial regain of the wool. For low regains, 0-2.5%, sorption is Fickian with a concentration- dependent diffusion coefficient. At 35° C. and zero regain the diffusion coefficient D0 = 1.0 × 10-10 cm.2/sec. and the activation energy of diffusion is > 11 kcal./mole. For concentrations above 2.5% regain, a portion of the water vapor uptake on absorption occurs by a non-Fickian mechanism; the relative contributions of the Fickian and nbn- Fickian mechanisms to the total uptake vary with the initial regain.Keywords
This publication has 18 references indexed in Scilit:
- The sorption of water by dry keratin fibers in atmospheres above 90% R.H.Journal of Applied Polymer Science, 1959
- Sorption kinetics of water vapor in wool fibersJournal of Polymer Science, 1958
- Concentration gradients during sorption of vapor into polymers in the glassy stateJournal of Polymer Science, 1956
- Two-stage Sorption and Desorption of Organic Vapors in Cellulose Acetate1,2Journal of the American Chemical Society, 1955
- Diffusion of Acetone into Polyvinyl Acetate above and below the Second-Order TransitionThe Journal of Chemical Physics, 1952
- Diffusion in high polymers: some anomalies and their significanceTransactions of the Faraday Society, 1951
- Sorption of vapours by keratin and woolTransactions of the Faraday Society, 1945
- Permeability of keratin membranes to water vapourTransactions of the Faraday Society, 1945
- Absorption of water by woolTransactions of the Faraday Society, 1945
- Propagation of temperature changes through textiles in humid atmospheresTransactions of the Faraday Society, 1940