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Effects of different acid functional groups on proton conductivity of polymer-1,2,4-triazole blends

✍ Scribed by S. T. Günday; A. Bozkurt; W. H. Meyer; G. Wegner

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
394 KB
Volume
44
Category
Article
ISSN
0887-6266

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✦ Synopsis

Abstract

Proton transfer reactions under anhydrous conditions have attracted remarkable interest due to chemical energy conversions in polymer electrolyte membrane fuel cells. In this work, 1H‐1,2,4‐triazole (Tri) was used as a proton solvent in different polymer host matrices such as Poly(vinylphosphonic acid) (PVPA), and poly(2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid) (PAMPS). PVPATri__~x~__ and PAMPSTri__~x~__ electrolytes were investigated where x is the molar ratio of Tri to corresponding polymer repeat unit. The interaction between polymer and Tri was studied via FTIR spectroscopy. Thermogravimetry analysis and differential scanning calorimetry were employed to examine the thermal stability and homogeneity of the materials, respectively. PVPATri~1.5~ showed a maximum water‐free proton conductivity of 2.3 × 10^−^^3^ S/cm at 120 °C and that of PAMPSTri~2~ was 9.3 × 10^−^^4^ S/cm at 140 °C. The results were interpreted in terms of different acidic functional groups and composition. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 3315–3322, 2006

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