Mechanisms of gas permeation through polymer membranes

Technical Report · Wed Jan 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/6857120· OSTI ID:6857120

Stern, S A

Progress is reported in two areas: (1) Concentration-temperature superposition principle (CTSP). CTSP is a theoretical model for describing the gas solubility in glassy polymers swollen by the penetrant gas. It has been extended to describe the dependence of gas diffusivity and permeability on penetrant pressure. Further extension to diffusion of gas mixtures is being studied. (2)Solubility of gases in poly(alkyl methacrylates). Solubility of methane in poly(ethyl methacrylate) and poly(n-butyl methacrylate) was measured; the Langmuir capacity constant was found to not reflect a lower excess free volume; an equation is given for relating the constant to the glass transition temperature. Solubility of ethane in the latter polymer is affected by plasticization.

• Research Organization: Syracuse Univ., NY (United States). Dept. of Chemical Engineering and Materials Science
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-87ER13649
• OSTI ID: 6857120
• Report Number(s): DOE/ER/13649-T2; ON: DE93005960
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKANES
DIFFUSION
DOCUMENT TYPES
ETHANE
FLUIDS
GASES
HYDROCARBONS
MEMBRANES
METHANE
ORGANIC COMPOUNDS
PERMEABILITY
POLYMERS
PROGRESS REPORT
SORPTION