Record Display for the EPA National Library Catalog

RECORD NUMBER: 491 OF 680

OLS Field Name OLS Field Data
Main Title Permeability of Polymeric Membrane Lining Materials.
Author Haxo, Jr., H. E. ; Miedema, J. A. ; Nelson, N. A. ;
CORP Author Matrecon, Inc., Oakland, CA.;Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1984
Report Number EPA-68-03-2969; EPA-600/D-84-080;
Stock Number PB84-166859
Additional Subjects Hazardous materials ; Linings ; Permeability ; Polymeric films ; Membranes ; Diffusion ; Solubility ; Water pollution ; Solid waste disposal ; Transport properties ; Gases ; Earth fills ; Laboratory equipment ; Vapor phases ; Thermoplastic resins ; Liquid waste disposal
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-166859 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 10p
Abstract
Permeabilities to three gases (carbon dioxide, methane, and nitrogen), water vapor, and five solvents (methanol, acetone, cyclohexane, xylene, and chloroform) are reported for a broad range of commercial polymeric membranes. Gas and water vapor transmission (WVT) data were determined by ASTM methods and solvent vapor transmission data were obtained in a modified WVT procedure. Permeability characteristics of thermoplastic and partially crystalline membranes were also assessed in pouch-type tests with salt solutions, actual wastes, acetone, xylene, and water-soluble and organic-soluble dyes. All membranes were permeable to some extent. Magnitude and direction of fluid transport vary with the membrane composition and its thickness, temperature, the permeant fluid, and the driving force which depends upon the concentration or the vapor pressure gradient across the membrane. Permeability depends upon the solubility and diffusion characteristics of the permeant in the particular membrane.