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Journal Articles

Elucidation of the morphology of the hydrocarbon multi-block copolymer electrolyte membranes for proton exchange fuel cells

Zhao, Y.; Yoshida, Miru*; Oshima, Tatsuya*; Koizumi, Satoshi*; Rikukawa, Masahiro*; Szekely, N.*; Radulescu, A.*; Richter, D.*

Polymer, 86, p.157 - 167, 2016/03

 Times Cited Count:12 Percentile:49(Polymer Science)

Journal Articles

PFG-NMR and SANS studies in cation exchange membranes based on sulfonated polyphenylene multiblock copolymers

Yoshida, Miru*; Zhao, Y.; Fujita, Masahiro*; Ohira, Akihiro*; Takeoka, Yuko*; Koizumi, Satoshi*; Rikukawa, Masahiro*

ECS Transactions, 50(2), p.1045 - 1053, 2012/10

Oral presentation

Small angle neutron scattering study on morphology and water distribution in block-copolymer electrolyte membranes

Zhao, Y.; Koizumi, Satoshi; Rikukawa, Masahiro*; Yoshida, Miru*

no journal, , 

Oral presentation

Small angle neutron scattering study on morphology and water distribution in block-copolymer electrolyte membranes

Zhao, Y.; Koizumi, Satoshi; Rikukawa, Masahiro*; Yoshida, Miru*

no journal, , 

Oral presentation

Structural analysis on hydrocarbon polymer electrolyte membrane by solvent contrast variation small-angle neutron scattering

Koizumi, Satoshi; Rikukawa, Masahiro*; Yoshida, Miru*; Tokumasu, Takashi*; Zhao, Y.; Maekawa, Yasunari

no journal, , 

We employed contrast variation small-angle neutron scattering method to investigate the morphologies of a newly designed polymer electrolyte membrane, made of multi-block copolymer poly(sulphonate phenylene)-b-poly(arylene ether ketone), which is coded as S-6H (n) x:y where x:y denote a ration between hydrophilic and hydrophobic block components. Two scattering maximums were observed at low q and high q regions for wet membranes, where q is a magnitude of scattering vector. The low q maximum is attributed to formation of microdomain upon swelling, whereas the high q maximum is due to the ion clusters in a swollen microdomain. The morphology could be stressed by the contrast variation method, which results in matching in scattering contrast between mixed water (H$$_{2}$$O/D$$_{2}$$O) and the swollen microdomain. In this talk, we present the understandings on the morphology and water distributions in these membranes.

Oral presentation

SANS study on ion conducting channels and water distribution in synthesized hydrocarbon polymer electrolyte membrane

Zhao, Y.; Koizumi, Satoshi; Rikukawa, Masahiro*; Yoshida, Miru*

no journal, , 

Oral presentation

Contrast Variation Small-Angle Neutron Scattering Study on Morphology of Polymer Electrolyte Membranes

Zhao, Y.; Koizumi, Satoshi; Rikukawa, Masahiro*; Yoshida, Miru*

no journal, , 

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