| 摘要 |
Improved porous polymeric membranes, annealed by a process of plasma-annealing, are used in separations and concentrative applications involving solutions or suspensions containing proteinaceous substances. Thus, porous membranes, which were treated by exposure to a glow discharge through a gas mixture containing an alkane such as methane in combination with oxygen, air, or a hydrophilic unsaturated organic monomer, exhibit greatly improved flux toward protein-containing fluids, and reduced protein fouling and loss due to adsorption on membrane surfaces. The plasma-annealed membranes are useful in fractionations and separations involving protein-containing fluids.
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