Permeation of several gases through elastomers, with emphasis on the deuterium/hydrogen pair
- Univ. of Texas, Austin (United States)
- Los Alamos National Lab., NM (United States)
The diffusion and permeation coefficients for He, H[sub 2], D[sub 2], O[sub 2], and N[sub 2] in a variety of elastomers were measured by simple manometric methods. The elastomers studied were butyl rubber; Hypalon[reg sign] 40 and 45; Viton[reg sign] E60 and GF; Hydrin[reg sign] 100 and filled Hydrin[reg sign] 100; Kraton[reg sign] G, FG, and KG VTEOS; EPDM; epoxidized natural rubber; and neoprene. Consistent with earlier studies, elastomers with higher glass transition temperatures exhibited lower diffusion coefficients. The ratio of diffusion coefficients of the hydrogen isotope pair differed from the purely molecular-weight-based prediction. Deuterium's slightly smaller size relative to hydrogen is consistent with observed deviations from the molecular-weight-based diffusion coefficient ratio.
- OSTI ID:
- 6783797
- Journal Information:
- Journal of Applied Polymer Science; (United States), Vol. 47:6; ISSN 0021-8995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DEUTERIUM
DIFFUSION
ELASTOMERS
PERMEABILITY
HELIUM
HYDROGEN
NITROGEN
OXYGEN
MOLECULAR WEIGHT
NEOPRENE
RUBBERS
TRANSITION TEMPERATURE
ELEMENTS
FLUIDS
GASES
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
POLYMERS
RARE GASES
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
400600* - Radiation Chemistry