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  Proton conducting copolymers on the basis of vinylphosphonic acid and 4-vinylimidazole

Bozkurt, A., Meyer, W. H., Gutmann, J., & Wegner, G. (2003). Proton conducting copolymers on the basis of vinylphosphonic acid and 4-vinylimidazole. Solid State Ionics, 164(3-4), 169-176.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-63C3-7 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-63C4-5
Genre: Journal Article

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 Creators:
Bozkurt, A., Author
Meyer, Wolfgang H.1, Author           
Gutmann, Jochen1, Author           
Wegner, Gerhard1, Author           
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: Copolymers of vinylphosphonic acid (VPA) and 4-vinylimidazole (4-VIm) were synthesized with various monomer feed ratios by free-radical polymerization. The copolymers were characterized by 1H-NMR, and the copolymer composition was determined via elemental analysis. The protonation of the heterocycles at the `free' nitrogen was confirmed by FT-IR. Thermogravimetric analysis (TG) illustrates that the copolymers are stable up to 200 °C. The morphology of the copolymers was characterized by wide-angle X-ray scattering (WAXS). For all the copolymers, no distinct glass transition temperatures were found up to the onset of degradation. The temperature dependence of the alternating current (AC) conductivities of the samples were investigated by means of impedance spectroscopy. The direct current (DC) conductivities of the samples were derived from the AC conductivity data.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: eDoc: 60319
Other: P-03-92
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Title: Solid State Ionics
  Alternative Title : Solid State Ionics
Source Genre: Journal
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Pages: - Volume / Issue: 164 (3-4) Sequence Number: - Start / End Page: 169 - 176 Identifier: -