ISSN:
0001-1541
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
An experimental technique has been developed for measuring the permeability (or surface resistance) of various monolayers to gases, as well as their effectiveness in hindering any substrate motion which accompanies the absorption process. Results are reported for sulfur dioxide absorbing into water and into aqueous gels in the presence of several surface-active agents. Measured surface resistances extend from a maximum of 200 sec./cm. for a condensed layer of hexadecanol to an indeterminably small value for expanded and gaseous films. After an initial period in which transfer is by diffusion alone, convective motion sets in. The onset and magnitude of the convective motion is displayed by measured absorption rates into water covered with monomolecular films and into viscous gels. The relative magnitude of the convective retardation of the various films parallels their permeabilities, both effects being proportional to the compressibility of the monolayer.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aic.690120512
