Alternative Trifluorovinyl Ether Derived Fluoropolymer Membranes and Functionalized Carbon Composite Electrodes for Fuel Cells

Perpall, Mark W.; Smith, Dennis W.; DesMarteau, Darryl D.; Creager, Stephen E.

doi:10.1080/15583720600796466

Cited by 13 publications

(5 citation statements)

References 35 publications

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“…Aromatic polymers have received great attention because of their usefulness in meeting high-performance requirements for structural resins, polymer films, and coating materials that are heavily applied in the aerospace and electronics industries [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. PAEs are generally synthesized via nucleophilic aromatic substitution of an activated dihalide with an aromatic bisphenol.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated Poly(Arylene Ether)s

Ghosh

Mukherjee

Ghosh

et al. 2015

Handbook of Specialty Fluorinated Polymers

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Section: Introductionmentioning

confidence: 99%

Fluorinated Poly(Arylene Ether)s

Ghosh

Mukherjee

Ghosh

et al. 2015

Handbook of Specialty Fluorinated Polymers

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“…PFCB aryl ether polymer systems possess tunable refractive indices, controllable glass transition temperatures, and are thermally robust. As a consequence, they are of particular interest in a multitude of material applications including high performance optics, photonics, electro-optics, atomic oxygen resistant coatings, and proton exchange membranes (PEMs) for fuel cells 1 [2+2] Thermal Polymerization of TFVE Monomers Producing PFCB Aryl Ether Polymers …”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Surface Morphology of Pendant Polyhedral Oligomeric Silsesquioxane Perfluorocyclobutyl Aryl Ether Copolymers

et al. 2007

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The synthesis and characterization of solution processable, semi-fluorinated perfluorocyclobutyl (PFCB) aryl ether polymers possessing covalently bound pendant polyhedral oligomeric silsesquioxanes (POSS) cages is reported. The synthesis of POSS aryl trifluorovinyl ether (TFVE) monomers was accomplished by the condensation of commercial monosilanolalkyl-POSS with a TFVE-functionalized chlorosilane. POSS TFVE monomers were elucidated by 1H, 19F, 13C, and 29Si NMR spectroscopy, ATR-FTIR analysis, and elemental (C, H, and F) combustion analysis. Bulk thermal copolymerization of POSS TFVE monomers afforded random and block PFCB aryl ether copolymers functionalized with various POSS loadings. Quantitative monomer conversion was monitored by 19F NMR, which produced copolymer number-average molecular weights (M n) of (19.5−24.9) × 103 (in CHCl3 using polystyrene as standard) determined by gel permeation chromatography (GPC). Thermal properties of POSS PFCB aryl ether copolymers were evaluated by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Transmission electron microscope (TEM) analysis of spin cast optically transparent, flexible POSS PFCB aryl ether copolymer films revealed the presence of 5−20 nm-sized POSS agglomerates. Optical profilometer analysis of spin and drop cast film surfaces exhibited a modest increase in surface roughness of POSS PFCB aryl ether copolymers as compared to PFCB aryl ether homopolymers without POSS inclusion. The POSS copolymers exhibited a modest increase in hydrophobicity as measured by static water contact angle analysis. Synthesis, characterization, thermal analysis, and unique surface features of POSS PFCB aryl ether copolymers are discussed.

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“…Several new alternative fluoropolymer electrolytes are of interest for improved mechanical and thermal stability [6,7]. Specifically, McGrath reported increased thermal stability and significantly reduced water uptake in PEMs by incorporating the hexafluoropropane linkage into the backbone of sulfonated poly(arylene ether sulfone)s (SPAES) [8].…”

Section: Repeat Structure Of Nafionmentioning

confidence: 99%

Sulfonated Fluorovinylene Aromatic Ether Polymers for Proton Exchange Membranes²

Iacono

Ewald

Sankhe

et al. 2007

High Performance Polymers

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A new semi-fluorinated perfluorocyclobutyl (PFCB) aryl ether containing polymer was prepared in high yield via the condensation of a commercial 4,4 1 -((1,2,3,3,4,4-hexafluorocyclobutane-1,2-diyl)bis(oxy))bisphenol (bisphenol T) and bis(trifluorovinyloxyether)biphenyl producing transparent, flexible films. The polymer system was structurally characterized using 1 H and 19 F NMR and exhibited a high degree of thermal stability as determined by thermogravimetric analysis capacity. The sulfonated analogue showed the highest degree of sulfonation at 27% from ion-exchange chromatography, producing a conductivity of 0.011 S cm 21 at 100% relative humidity.

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Alternative Trifluorovinyl Ether Derived Fluoropolymer Membranes and Functionalized Carbon Composite Electrodes for Fuel Cells

Cited by 13 publications

References 35 publications

Fluorinated Poly(Arylene Ether)s

Fluorinated Poly(Arylene Ether)s

Synthesis, Characterization, and Surface Morphology of Pendant Polyhedral Oligomeric Silsesquioxane Perfluorocyclobutyl Aryl Ether Copolymers

Sulfonated Fluorovinylene Aromatic Ether Polymers for Proton Exchange Membranes²

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Alternative Trifluorovinyl Ether Derived Fluoropolymer Membranes and Functionalized Carbon Composite Electrodes for Fuel Cells

Cited by 13 publications

References 35 publications

Fluorinated Poly(Arylene Ether)s

Fluorinated Poly(Arylene Ether)s

Synthesis, Characterization, and Surface Morphology of Pendant Polyhedral Oligomeric Silsesquioxane Perfluorocyclobutyl Aryl Ether Copolymers

Sulfonated Fluorovinylene Aromatic Ether Polymers for Proton Exchange Membranes2

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Sulfonated Fluorovinylene Aromatic Ether Polymers for Proton Exchange Membranes²