| 초록 |
Organic–inorganic composite membranes could be prepared by the incorporation of various inorganic solids into an organic polymer and serves as the matrix component being able to enhanced membrane performances such as thermal stability, mechanical property and methanol crossover. Inorganic oxide such as silica, zirconium oxide, TEOS and montmorillonite (MMT) have been introduced to increase water retention level at a high temperature and to reduce methanol crossover in the cases of perfluorinated ionomer membranes. We synthesized the sulfonated poly(arylene ether sulfone) copolymer and subsequently prepared PAES /silica nano-composite membrane using a hydrophilic and hydrophobic silica. The proton conductivity, methanol permeability, ion exchange capacity (IEC), water uptake and thermal properties of the membranes prepared in the study were evaluated for DMFC application. |
