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000892627 1001_ $$00000-0001-5100-9230$$aZhao, Yue$$b0$$eCorresponding author
000892627 245__ $$aThree-Component Domains in the Fully Hydrated Nafion Membrane Characterized by Partial Scattering Function Analysis
000892627 260__ $$aWashington, DC$$bSoc.$$c2021
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000892627 520__ $$aA fully hydrated Nafion membrane is generally treated as a three-component system comprising the tetrafluoroethylene-like main chain, the fluorinated side chain ending with a sulfonic acid group, and absorbed water. We applied the contrast variation small-angle neutron scattering technique to decompose scattering intensity profiles to partial scattering functions (PSFs) of each component in Nafion quantitatively. In the large scale (>30 nm), structural heterogeneities were observed in the main- and side-chain domains but not in water domains. In the middle scale (5–30 nm), a bicontinuous-like structure of crystalline and amorphous phases with a mean separation distance of 11 nm was observed, as a result of the main-chain semicrystalline templating effect. In the small scale (<5 nm), another bicontinuous-like structure exists in the amorphous phase with a mean separation distance of about 4 nm, indicating a well-connected water network responsible for the good membrane conductivity. Cross-term analysis of PSFs for two components suggested the location of each component that the main-chain domains tends to phase-separate from either the side-chain or water domains, but the side-chain and water domains are closely attached through sulfonic acid groups.
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000892627 65017 $$0V:(DE-MLZ)GC-1602-2016$$2V:(DE-HGF)$$aPolymers, Soft Nano Particles and  Proteins$$x0
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000892627 7001_ $$00000-0002-2635-8989$$aYoshimura, Kimio$$b1
000892627 7001_ $$0P:(DE-HGF)0$$aMotegi, Toshinori$$b2
000892627 7001_ $$0P:(DE-HGF)0$$aHiroki, Akihiro$$b3
000892627 7001_ $$0P:(DE-Juel1)130905$$aRadulescu, Aurel$$b4
000892627 7001_ $$0P:(DE-HGF)0$$aMaekawa, Yasunari$$b5$$eCorresponding author
000892627 773__ $$0PERI:(DE-600)1491942-4$$a10.1021/acs.macromol.1c00587$$gVol. 54, no. 9, p. 4128 - 4135$$n9$$p4128 - 4135$$tMacromolecules$$v54$$x1520-5835$$y2021
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000892627 8564_ $$uhttps://juser.fz-juelich.de/record/892627/files/ma-2021-00587k_R1_20210420.pdf$$yPublished on 2021-04-29. Available in OpenAccess from 2022-04-29.
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