Abstract
Electro-osmotic drag effect on the methanol permeation was investigated for sPEEK membrane, and its result was compared to that of Nafion. The electro-osmotic drag coefficient was determined from the limiting current density which is a function of applied potential and temperature. The methanol permeability of sPEEK membrane increased with temperature but its temperature dependence was not as strong as Nafion. The methanol permeability or the total methanol flux of Nafion was at least twice higher than that of sPEEK 75, as it was highly associated with the electro-osmotic drag. This higher electro-osmotic drag of Nafion is attributed to the bigger ion cluster size and thus more free water absorption than sPEEK.
| Original language | English |
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| State | Published - 2011 |
| Event | 18th International Conference on Composites Materials, ICCM 2011 - Jeju, Korea, Republic of Duration: 21 Aug 2011 → 26 Aug 2011 |
Conference
| Conference | 18th International Conference on Composites Materials, ICCM 2011 |
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| Country/Territory | Korea, Republic of |
| City | Jeju |
| Period | 21/08/11 → 26/08/11 |
Keywords
- And electro-osmotic drag
- Proton conductivity
- SAXS
- SPEEK