Search Results - "Beers, Keith M"
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Design of Cluster-free Polymer Electrolyte Membranes and Implications on Proton Conductivity
Published in ACS macro letters (16-10-2012)“…Nanoscale ionic aggregates are ubiquitous in copolymers containing charged and uncharged monomers. In most cases, these clusters persist when these polymers…”
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Effect of Morphology of Nanoscale Hydrated Channels on Proton Conductivity in Block Copolymer Electrolyte Membranes
Published in Nano letters (09-07-2014)“…Hydrated membranes with cocontinuous hydrophilic and hydrophobic phases are needed to transport protons in hydrogen fuel cells. Herein we study the water…”
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Mesoporous Block Copolymer Morphology Studied by Contrast-Matched Resonant Soft X‑ray Scattering
Published in Macromolecules (27-11-2012)“…We demonstrate the use of contrast-matched resonant soft X-ray scattering (RSoXS) for studying the morphology of mesoporous…”
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Absence of Schroeder’s Paradox in a Nanostructured Block Copolymer Electrolyte Membrane
Published in The journal of physical chemistry. B (19-06-2014)“…This is a study of morphology, water uptake, and proton conductivity of a sulfonated polystyrene-block-polyethylene (PSS-PE) copolymer equilibrated in humid…”
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Counterion Condensation in Nafion
Published in Macromolecules (22-11-2011)“…Nafion(117) membranes in contact with acidic solutions were characterized by small-angle X-ray scattering and by acid solution uptake measurements. The…”
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Morphology and Thermodynamic Properties of a Copolymer with an Electronically Conducting Block: Poly(3-ethylhexylthiophene)-block-poly(ethylene oxide)
Published in Nano letters (12-09-2012)“…We report on the synthesis and morphology of a block copolymer, poly(3-(2′-ethylhexyl)thiophene)-b-poly(ethylene oxide) (P3EHT-b-PEO), that conducts both…”
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Effect of Crystallization on Proton Transport in Model Polymer Electrolyte Membranes
Published in Macromolecules (08-07-2014)“…Polymer electrolyte membranes with bicontinuous microphases comprising soft hydrated domains and mechanically robust hydrophobic domains are used in a wide…”
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On the Origin of Slow Changes in Ionic Conductivity of Model Block Copolymer Electrolyte Membranes in Contact with Humid Air
Published in Macromolecules (22-06-2010)“…Proton conductivity (σ) and degree of hydration (λ) of poly(styrenesulfonate−methylbutylene) (PSS−PMB) block copolymers in contact with humid air were studied…”
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Proton conduction in materials comprising conducting domains with widths less than 6nm
Published in European polymer journal (01-04-2011)“…We review the literature on proton conductivity and water uptake of composite polymer electrolyte membranes comprising bicontinuous hydrophilic and hydrophobic…”
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