Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
636882 | Journal of Membrane Science | 2009 | 7 Pages |
Abstract
Surface fluorination effectively reduced the water absorption of crosslinked polyvinyl alcohol (PVA)/poly(styrene sulfonic acid-co-maleic acid) (PSSA_MA) membranes. The crosslinked PVA membranes were prepared using PSSA_MA as a crosslinking agent as well as a donor of the hydrophilic group (–SO3H and/or –COOH). Surface treatment by gaseous fluorine treatment disrupted the C–OH bonds and generated C–F and C–F2 groups at the membrane surface where atomic percent of fluorine increased up to 5.4%. The membranes with highly hydrophobic fluorinated surface exhibited improved proton conductivity and methanol permeability at a relatively low water uptake.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Dae Sik Kim, Hyun Il Cho, Dae Hoon Kim, Byung Seong Lee, Bo Sung Lee, Suk Won Yoon, Yu Seung Kim, Go Young Moon, Hongsik Byun, Ji Won Rhim,