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Study on CO2/N2 Mixture Gas Permeation Behavior through Polyethersulfone Membrane Treated by Plasma  

Park, Hee-Jin (Department of Chemical Engineering, College of Engineering Science, Hanyang University)
Noh, Sang-Ho (Department of Chemical Engineering, College of Engineering Science, Hanyang University)
Bae, Seong-Youl (Department of Chemical Engineering, College of Engineering Science, Hanyang University)
Moon, Sei-Ki (Department of Chemical Engineering, College of Engineering Science, Hanyang University)
Publication Information
Korean Chemical Engineering Research / v.40, no.6, 2002 , pp. 687-693 More about this Journal
Abstract
The surface of polyethersulfone(PES) membrane treated by Ar, $NH_3$ plasma, and the effects were observed before and after the treatment. The membrane treated by Ar plasma was increased the O/C ratio and measured the hydrophilic group, and the one by $NH_3$ plasma was attached the amine group and the amino group. In addition, with the wettability of polyethersulfone membrane $CO_2$ and the polar functional groups of surface interacted increasingly. Thus by comparable increase of the soluble selectivity $CO_2$ to $N_2$ both the permeability and the selectivity of $CO_2$ was improved. The optimum condition for the $CO_2$ permeation and actual separation factor of the plasma treated membrane was as follows; the measurement of Ar-10 W-2 min plasma treatment was $13.19{\times}10^{-10}cm^3(STP)cm/cm^2{\cdot}s{\cdot}cmHg$ and 20.12, and the measurement of $NH_3$-50 W-2 min plasma treatment was $15.40{\times}10^{-10}cm^3(STP)cm/cm^2{\cdot}s{\cdot}cmHg$ and 20.06.
Keywords
Polyethersulfone; Plasma Treatment; Selectivity; Permeation;
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