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Morphology of Block Copolymer Ionomer Thin Films for Micro Fuel Cell Devices

Morphology of Block Copolymer Ionomer Thin Films for Micro Fuel Cell Devices. Daniel C. Ralph, Cornell University, ECCS 0335765. XRD results showing changes in the crystallinity of Nafion® upon Supercritical Fluid CO 2 Processing with Counter-Ion Substitution. .

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Morphology of Block Copolymer Ionomer Thin Films for Micro Fuel Cell Devices

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  1. Morphology of Block Copolymer Ionomer Thin Films for Micro Fuel Cell Devices Daniel C. Ralph, Cornell University, ECCS 0335765 XRD results showing changes in the crystallinity of Nafion® upon Supercritical Fluid CO2 Processing with Counter-Ion Substitution. The purpose of this investigation is to develop selective and efficient block copolymer ionomers for direct methanol micro-fuel cell (mDMFC) applications. The study evaluated changes in the morphology and nanostructure of Nafion® and poly(styrene-isobututylene-styrene) (SIBS) with changes in: sulfonation level, counter-ion substitution, hydration effect and even substrate type. The results show significant variations in crystallinity upon supercritical fluid processing of Nafion®, and changes in the morphology as well as the interconnected ionic distance with sulfonation for SIBS membranes. SAXS results for poly(styrene-isobutylene-styrene) showing changes in morphology and interstitial ionic distance TEM image of sulfonated poly(styrene-isobutylene-styrene David Suleiman, Universidad de Puerto Rico Mayaguez, PR Work performed at U. Washington

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