Highly asymmetrical carbon membranes
Date
1994
Authors
Linkov V.M.
Sanderson R.D.
Jacobs E.P.
Journal Title
Journal ISSN
Volume Title
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Abstract
Carbon membranes have been produced by thermo-oxidative stabilization and carbonization of polyacrylonitrile-based hollow-fibre precursors. The inner layer of coarse pores, the system of channels which penetrate through most of the wall, and the dense outer skin form the highly asymmetrical structure of the membrane. Transmission electron microscopy images of Pt/C replicas of the membrane's outer surfaces revealed that the pore sizes and shapes in the outer skin could be altered by the use of polymers of different intrinsic viscosities as a precursor material as well as changing the stabilization atmosphere and carbonization temperature.Carbon membranes have been produced by thermo-oxidative stabilization and carbonization of polyacrylonitrile-based hollow-fibre precursors. The inner layer of coarse pores, the system of channels which penetrate through most of the wall, and the dense outer skin form the highly asymmetrical structure of the membrane. Transmission electron microscopy images of Pt/C replicas of the membrane's outer surfaces revealed that the pore sizes and shapes in the outer skin could be altered by the use of polymers of different intrinsic viscosities as a precursor material as well as changing the stabilization atmosphere and carbonization temperature.
Description
Keywords
Carbon, Carbonization, Mechanical properties, Morphology, Polyacrylonitriles, Porosity, Precipitation (chemical), Structure (composition), Surfaces, Thermooxidation, Transmission electron microscopy, Viscosity, Carbon membranes, Macromolecules, Membrane preparature, Microporous membranes, Pore sizes, Pore structure, Porous membranes, Membranes, carbon, article, membrane preparation, membrane structure, priority journal, transmission electron microscopy, Membranes-Synthetic, Separation-Gas/Gas
Citation
Journal of Membrane Science
95
1
95
1