Results 151 to 160 of about 14,368 (203)

Acidity in Nafion

Journal of Macromolecular Science: Part A - Chemistry, 1990
Abstract Hammett acidity functions have been measured for Nafion films equilibrated with a series of nitroaniline dyes in hydrochloric acid solutions. The effect of ionic strength of alkali metal and tetraalky-lammonium bromides on the ability of the Nafion film to donate a proton to Bronsted bases is the reverse of that expected for acid in solution ...
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Activity of Nafion

ECS Meeting Abstracts, 2015
The activity of protons and water content in Nafion films are considered for different electrolytes and electrolyte concentrations in the solution.  A model of activity effects in Nafion will allow optimization of operating conditions for systems such as fuel cells and sensors where proton exchange membranes and films significantly impact system ...
Nadeesha Rathuwadu, Johna Leddy
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Streaming Potential Across Nafion Membranes

Berichte der Bunsengesellschaft für physikalische Chemie, 1989
AbstractMembranes / Nonequilibrium Phenomena / Streaming Potential / Thermodynamics / Transport PropertiesThe streaming potential Δϕ which arises between the uni‐univalent electrolyte solutions of the same concentration separated by nafion 125 membrane in the presence of a pressure difference ΔPapplied across the membrane has been studied.
SCIBONA, Giancarlo, BOTRE', Francesco, C. Botre', C. Fabiani, F. Croce   +4 more
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Selective Cation Transport through Graphene in Nafion | Graphene | Nafion Membranes

ECS Meeting Abstracts, 2020
Graphene and related two-dimensional (2D) materials are being intensively studied for use in membrane separators. The ultrathin nature of 2D materials combined with the opportunities they afford for intentional creation of nanometer-sized pores having controllable size and chemical character could allow for membrane separations with high flux and ...
Saheed Bukola, Liyanage Mayura Silva, Stephen E Creager   +2 more
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Performance of EDLCs using Nafion and Nafion composites as electrolyte

Journal of Applied Electrochemistry, 2010
We present the electrochemical performance of solid-state EDLCs constructed using composites of perfluorosulfonic acid polymer (Nafion) with micro porous polytetrafluoroethylene (PTFE) membrane and with cellulose acetate (CA), as electrolyte with carbon as electrodes (surface area: 260 m2 g−1).
C. K. Subramaniam, C. S. Ramya, K. Ramya
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SAXS Measurements of Hydration Processes in Nafion and Nafion-Like Membranes

ECS Meeting Abstracts, 2006
Abstract not Available.
Niccolo Aieta, Michael Yandrasits, Steven Hamrock, Ronald J. Stanis, David J. Cooksen, Andrew M. Herring   +5 more
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Hydrophilic Clustering and Swelling in Nafion and Modified Nafion Films

ECS Meeting Abstracts, 2008
Abstract not Available.
Vojtech Svoboda, Matthew Wormington, Alexis Bourgeois, Bor Yann Liaw, Shelley Minteer, Plamen Atanassov   +5 more
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Electrochemical Proton / Deuteron Separation in Nafion | Graphene | Nafion Hydrogen Pump Cells

ECS Meeting Abstracts, 2018
Hydrogen pump cells fabricated from Nafion membranes and Pt-on-carbon electrodes were used to measure rates of proton and deuteron transfer across single-layer graphene embedded in Nafion | graphene | Nafion sandwich structures in proton and deuteron form respectively.
Stephen E Creager, Saheed Bukola, Carol Korzeniewski, Joel Mark Harris   +3 more
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Counterion Condensation in Nafion

Macromolecules, 2011
Nafion(117) membranes in contact with acidic solutions were characterized by small-angle X-ray scattering and by acid solution uptake measurements.
Keith M. Beers, Daniel T. Hallinan, Xin Wang, John A. Pople, Nitash P. Balsara   +4 more
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Nafion as Cosurfactant: Solubilization of Nafion in Water in the Presence of Pluronics

Langmuir, 2010
Incorporation of Nafion to aqueous solutions of Pluronics adversely impacts micellization due to extensive Nafion/copolymer interactions. Light scattering and zeta potential measurements provide evidence for the formation of sizable and stable Nafion/copolymer complexes, in expense of the neat copolymer micelles.
Kelarakis, Antonios, Giannelis, Emmanuel P.   +1 more
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