Gaseous Flow Through Thin Carbon Films

Gaseous Flow Through Thin Carbon Films

Thin carbon films, when used as coatings on prosthetic devices, must be a barrier to gases and physiological fluids. Using CO2 at room temperature, the gas permeability of carbon films ranging in thickness from about 200 to 5000Å was measured. The average permeability constant of 21 carbon films was...

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Veröffentlicht in:Artificial cells, blood substitutes, and immobilization biotechnology blood substitutes, and immobilization biotechnology, 1980, Vol.8 (3), p.257-264
Hauptverfasser: Shim, Hong S., Haubold, Axel D.
Format: Artikel
Sprache:eng
Schlagworte:
Biocompatible Materials
Carbon
Carbon Dioxide
Gases
Membranes, Artificial
Permeability
Prostheses and Implants
Surface Properties
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Zusammenfassung:Thin carbon films, when used as coatings on prosthetic devices, must be a barrier to gases and physiological fluids. Using CO2 at room temperature, the gas permeability of carbon films ranging in thickness from about 200 to 5000Å was measured. The average permeability constant of 21 carbon films was determined to be 1.91 (±1.02) x 10−12 cm3-cm/cm2-sec-mmHg. This value is quite comparable to or smaller than that of nuclear graphites, which are considered to be impermeable to gases.
ISSN:1073-1199
0090-5488
1532-4184
DOI:10.3109/10731198009118982