Abstract
Proton conducting polyimides containing pendant benzimidazole groups have been synthesized by different ratios of 5-(1H-benzimidazol-2-yl)-benzene-1-3-diamine (DABI) and oxydianiline (ODA) in the presence of oxydianiline (ODPA). All the polymers were structurally characterized by Fourier transform infrared (FT-IR) spectroscopy while the thermal properties were studied by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). From application point of view, proton conductivity of all polymers doped with phosphoric acid was studied by impedance analyzer. All the polymers have been found to be thermally stable with high dielectric constants and are proton conductive. The polymer with highest DABI value showed highest conductivity (max 0.11 S/cm).
Keywords: Dielectrics, polymers, proton conductivity, thermal properties, fuel cell, thermodynamic limitation, pollution, oxygen solubility, benzimidazole ring, spectroscopy technique
Letters in Organic Chemistry
Title:Synthesis, Characterization and Fuel Cell Application of Polyimides
Volume: 9 Issue: 9
Author(s): Minju Lee, Sher B. Khan, Kwangwon Seo, Jin-Woo Lee, Kalsoom Akhtar, Haksoo Han and Abdullah M. Asiri
Affiliation:
Keywords: Dielectrics, polymers, proton conductivity, thermal properties, fuel cell, thermodynamic limitation, pollution, oxygen solubility, benzimidazole ring, spectroscopy technique
Abstract: Proton conducting polyimides containing pendant benzimidazole groups have been synthesized by different ratios of 5-(1H-benzimidazol-2-yl)-benzene-1-3-diamine (DABI) and oxydianiline (ODA) in the presence of oxydianiline (ODPA). All the polymers were structurally characterized by Fourier transform infrared (FT-IR) spectroscopy while the thermal properties were studied by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). From application point of view, proton conductivity of all polymers doped with phosphoric acid was studied by impedance analyzer. All the polymers have been found to be thermally stable with high dielectric constants and are proton conductive. The polymer with highest DABI value showed highest conductivity (max 0.11 S/cm).
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Cite this article as:
Lee Minju, B. Khan Sher, Seo Kwangwon, Lee Jin-Woo, Akhtar Kalsoom, Han Haksoo and M. Asiri Abdullah, Synthesis, Characterization and Fuel Cell Application of Polyimides, Letters in Organic Chemistry 2012; 9 (9) . https://dx.doi.org/10.2174/157017812803521090
DOI https://dx.doi.org/10.2174/157017812803521090 |
Print ISSN 1570-1786 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6255 |
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