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- W2040373987 abstract "A novel sulfonated diamine bearing sulfophenyl pendant groups of 2,2′-(4-sulfophenyl) benzidine (BSPhB) was synthesized. Sulfonated polyimides (SPIs) derived from 1,4,5,8-naphthalene tetracarboxylic dianhydride, BSPhB and other non-sulfonated diamines were successfully synthesized. The SPIs with ion exchange capacity (IEC) of 1.5–2.8 meq g−1 showed high reduced viscosity of 3–10 dL g−1 and high desulfonation temperature of 320 °C. The SPI membranes were tough and flexible, having high stress at break of more than 80 MPa and elongation of 80–100%. They showed highly anisotropic membrane swelling in water with larger swelling in thickness direction than in plane direction. They showed fairly high proton conductivity (σ). For example, the membrane with IEC of 1.77 meq g−1 exhibited σ values of 120 and 260 mS cm−1 at 60 and 120 °C, respectively, in water. They also showed fairly high water stability." @default.
- W2040373987 created "2016-06-24" @default.
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- W2040373987 date "2007-03-01" @default.
- W2040373987 modified "2023-10-14" @default.
- W2040373987 title "Synthesis and properties of novel sulfonated polyimides bearing sulfophenyl pendant groups for polymer electrolyte fuel cell application" @default.
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- W2040373987 doi "https://doi.org/10.1016/j.polymer.2007.02.011" @default.
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