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Fabrication of Fluorinated Polymeric Membranes and Their Noble Gas Separation Properties  

Kim, Gi-Bum (Nano Bio-Sensor Research Team (BK21), Department of Chemistry, Hannam University)
Yoon, Kuk-Ro (Nano Bio-Sensor Research Team (BK21), Department of Chemistry, Hannam University)
Publication Information
Applied Chemistry for Engineering / v.21, no.4, 2010 , pp. 475-478 More about this Journal
Abstract
Fluorinated polymeric membranes were prepared by direct surface modification of PDMS with fluorine gas ($50{\sim}2000\;{\mu}mol/mol$ in nitrogen). The formed fluorinated polymeric membranes were characterized by FT-IR spectroscopy, GC (Gas chromatography), atomic force microscopy, and scanning electron microscopy. Direct fluorination resulted in the change of permeability and selectivity of various gases (pure gases such as $CO_2$, $O_2$, $N_2$, $C_2H_4$, mixture of He, Ne, Kr, Xe) through PDMS membranes. Fluorination resulted in the maximum 50% increase of selectivity through PDMS membrane.
Keywords
Polydimethylsiloxane/polyethersulfone (PDMS/PES); surface modification; noble gas;
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