Preparation and characterization of SMA/S-POSS hybrid membranes for direct methanol fuel cell applications
- Authors
- Wang Erdong; Shi Pengfei; Chang Young-wook
- Issue Date
- Oct-2006
- Publisher
- NONFERROUS METALS SOC CHINA
- Keywords
- SMA; sulfonated polyhedral oligomeric silsesquioxane; proton conductivity; methanol permeability
- Citation
- RARE METALS, v.25, no.6 suppl 1, pp.224 - 228
- Indexed
- SCIE
SCOPUS
- Journal Title
- RARE METALS
- Volume
- 25
- Number
- 6 suppl 1
- Start Page
- 224
- End Page
- 228
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/44656
- DOI
- 10.1016/S1001-0521(07)60078-3
- ISSN
- 1001-0521
- Abstract
- A novel sulfonated polyhedral oligomeric silsesquioxane(S-POSS) monomer was synthesized successfully in this article. S-POSS acted as a donor of sulfonic acid group and reacted with poly (styrene-co-maleic anhydride) (SMA). FT-IR spectroscopy confirmed the modification through introduction of peaks characteristic of ester linkages and carboxylic groups. The SMA/S-POSS hybrid membranes were fabricated from different S-POSS contents. The proton conductivity and methanol permeability of the hybrid membranes were studied with changing S-POSS content from 5wt. % to 30wt. %. It was found that the proton conductivity and the methanol permeability were dependent on the S-POSS content. Both of proton conductivity and methanol permeability properties improve with increasing S-POSS content. The proton conductivities of the hybrid membranes are in the range of 10(-3) - 10(-2) S center dot cm(-1), and the range of methanol permeabilities was between 10(-8) and 10(-7) cm(2)center dot s(-1). The membranes show good thermal properties characterized by thermogravimetric analysis (TGA).
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