Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1279347 | International Journal of Hydrogen Energy | 2011 | 7 Pages |
Abstract
Proton-conductive membranes, exhibiting high chemical and thermomechanical resistance, have been obtained by s-PS films with the β crystalline phase and a sulfonated amorphous phase. These membranes can be obtained by a solid-state procedure on δ form films, which allows an easy and uniform sulfonation of the phenyl rings of the amorphous phase and preserves the crystalline phase, followed by suitable thermal treatments leading to the δ → β crystal-to-crystal transition. The high degree of sulfonation of the amorphous phase makes this phase highly hydrophilic and proton conductive while the presence of the high melting and thermodynamically stable β phase assures high chemical and thermomechanical stability.
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Physical Sciences and Engineering
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Authors
Fasano Gianluca, Rosa Califano, Marina Pellegrino, Vincenzo Venditto, Gaetano Guerra, Anna Borriello, Luigi Ambrosio, Lucia Sansone,