Intrinsically proton-conducting poly(1-vinyl-1,2,4-triazole)/triflic acid blends

Aslan, Ayşe; Çelik, Sevim Ünügür; Şen, Ünal; Haser, Resul; Bozkurt, Ayhan

doi:10.1016/j.electacta.2008.12.026

Cited by 52 publications

(52 citation statements)

References 17 publications

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“…In poly(4 (5)-vinylimidazole), polymer-acid complexation blocked the imidazole ring nitrogens and inhibited the structure diffusion at higher acid contents. Poly(1-vinyl-1,2,4-triazole) is a heterocyclic polymer that has three nitrogen sites per monomeric unit and showed that proton transfer is a strong contribution to proton conduction in poly(1-vinyl-1,2,4-triazole)/acid composites [7,13].…”

Section: Introductionmentioning

confidence: 99%

Proton conducting composite membranes based on poly(1-vinyl-1,2,4-triazole) and nitrilotri (methyl triphosphonic acid)

Gustian

Çelik

Suratno

et al. 2011

Journal of Physics and Chemistry of Solids

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a b s t r a c tPolymer electrolyte composite membranes based on poly(1-vinyl-1,2,4-triazole) (PVTRI) and nitrilotri(methyl triphosphonic acid) (TPA) were investigated. PVTRI was produced by free radical polymerization of 1-vinyl-1,2,4-triazole. The polymer PVTRI was doped with TPA at various molar ratios x ¼ 0.125, x ¼ 0.25, and x ¼ 0.5. The proton transfer from TPA to the triazole rings was proved with Fourier-transform infrared spectroscopy (FT-IR). Thermogravimetry (TG) analysis showed that the samples are thermally stable up to approximately 250 1C. DSC results illustrated the homogeneity of the materials as well as the softening effect of the dopant. Cyclic voltammetry results illustrated that the electrochemical stability domain of the dopant extends over 1.5 V. The maximum proton conductivity has been measured for PVTRITPA-0.25 as 8.5 Â 10 À 4 S cm À 1 at 150 1C.

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Section: Introductionmentioning

confidence: 99%

Proton conducting composite membranes based on poly(1-vinyl-1,2,4-triazole) and nitrilotri (methyl triphosphonic acid)

Gustian

Çelik

Suratno

et al. 2011

Journal of Physics and Chemistry of Solids

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“…-(H + ) [26][27][28]. The intensity of -SO3 -(H + ) peak also increases in parallel with the increase of molar ratio of H2SO4 in the blends.…”

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confidence: 54%

Magnetic Vinylphenyl Boronic Acid Microparticles for Surface Catalytic Performance in Esterification of Propionic Acid with Methanol

Kara¹,

Erdem²

2016

ANADOLU UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY a - Applied Sciences and Engineering

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Magnetic vinylphenyl boronic acid microparticles, poly(ethylene glycol dimethacrylate-vinylphenyl boronic acid) [mpoly(EGDMA-VPBA)], produced by suspension polymerization, was found to be efficient solid acid catalyst for the esterification of methanol and propionic acid. Characterization techniques such as FT-IR, Elemental analyses, ICP-AES, ESR, SEM and N2 sorption showed that both of Fe3O4 and H2SO4 are bonded to the polymer successfully. Esterification was studied for different molar percentages of H2SO4 at temperature range of 50-70 o C. The apparent activation energy was found to be 28.4 kj.mol -1 for 10% H2SO4 doped m-poly(EGDMA-VPBA). Combining of strong acid H2SO4 with m-poly(EGDMA-VPBA), leads to materials with different functional properties. In addition, H2SO4 species could be introduced into the structure as acid centers, therefore this micro-dimensional catalyst has potential candidate for applications in the catalytic esterifications such as propionic acid with methanol.

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“…The FTIR spectrum of the homopolymer is shown in Figure 2a. The triazole ring of the pristine polymer PVTri gives several medium strong peaks in the 1430–1650 cm −1 range because of ring stretching (CN, C  N) vibrations 21, 22. The broad peak centered at 3450 cm −1 was assigned to OH vibration of molecular water interacting with the pristine PVTri.…”

Section: Resultsmentioning

confidence: 99%

“…In poly(45‐vinylimidazole), polymer‐acid complexation blocked the imidazole ring nitrogens and inhibited the structure diffusion at higher acid contents. Poly(1‐vinyl‐1,2,4‐triazole) is another heterocyclic polymer that has three nitrogen sites per monomeric unit and our recent studies21, 22 showed that proton transfer is a strong contribution to proton conduction in poly(1‐vinyl‐1,2,4‐triazole)/acid composites.…”

Section: Introductionmentioning

confidence: 99%

Polymer electrolyte membranes based on p‐toluenesulfonic acid doped poly(1‐vinyl‐1,2,4‐triazole): Synthesis, thermal and proton conductivity properties

Özden

Celik

Bozkurt

2010

J Polym Sci B Polym Phys

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Throughout this work, the synthesis, thermal as well as proton conducting properties of acid doped heterocyclic polymer were studied under anhydrous conditions. In this context, poly(1‐vinyl‐1,2,4‐triazole), PVTri was produced by free radical polymerization of 1‐vinyl‐1,2,4‐triazole with a high yield. The structure of the homopolymer was proved by FTIR and solid state 13C CP‐MAS NMR spectroscopy. The polymer was doped with p‐toluenesulfonic acid at various molar ratios, x = 0.5, 1, 1.5, 2, with respect to polymer repeating unit. The proton transfer from p‐toluenesulfonic acid to the triazole rings was proved with FTIR spectroscopy. Thermogravimetry analysis showed that the samples are thermally stable up to ∼250 °C. Differential scanning calorimetry results illustrated that the materials are homogeneous and the dopant strongly affects the glass transition temperature of the host polymer. Cyclic voltammetry results showed that the electrochemical stability domain extends over 3 V. The proton conductivity of these materials increased with dopant concentration and the temperature. Charge transport relaxation times were derived via complex electrical modulus formalism (M*). The temperature dependence of conductivity relaxation times showed that the proton conductivity occurs via structure diffusion. In the anhydrous state, the proton conductivity of PVTri1PTSA and PVTri2PTSA was measured as 8 × 10−4 S/cm at 150 °C and 0.012 S/cm at 110 °C, respectively. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1016–1021, 2010

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Intrinsically proton-conducting poly(1-vinyl-1,2,4-triazole)/triflic acid blends

Cited by 52 publications

References 17 publications

Proton conducting composite membranes based on poly(1-vinyl-1,2,4-triazole) and nitrilotri (methyl triphosphonic acid)

Proton conducting composite membranes based on poly(1-vinyl-1,2,4-triazole) and nitrilotri (methyl triphosphonic acid)

Magnetic Vinylphenyl Boronic Acid Microparticles for Surface Catalytic Performance in Esterification of Propionic Acid with Methanol

Polymer electrolyte membranes based on p‐toluenesulfonic acid doped poly(1‐vinyl‐1,2,4‐triazole): Synthesis, thermal and proton conductivity properties

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