State of water in hybrid sulfonated poly(ether ether ketone) - silica membranes by 1H solid-state NMR

Maria Baias; Dan E. Demco; Bernhard Blümich; Martin Möller

doi:10.1016/j.cplett.2009.03.063

State of water in hybrid sulfonated poly(ether ether ketone) - silica membranes by ¹H solid-state NMR

Maria Baias, Dan E. Demco, Bernhard Blümich, Martin Möller

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

The state of water in fully hydrated sulfonated poly(ether ether ketone) - silica hybrid proton exchange membranes were characterized in terms of the exchange rate between bound and free water, the water dynamics in each phase, and the relative water populations by ¹H ODESSA and transverse magnetization relaxation NMR. The exchange rate, the amount of bound water, and the reorientation of free water molecules increase in the presence of silica particles. The dynamics of bound water was described by the Lévy statistics with a Cauchy propagator. The proton exchange membranes performances could be improved by addition of small concentrations of silica in the range of 5-10 wt.%.

Original language	English (US)
Pages (from-to)	142-145
Number of pages	4
Journal	Chemical Physics Letters
Volume	473
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2009.03.063
State	Published - Apr 29 2009

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2009.03.063

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title = "State of water in hybrid sulfonated poly(ether ether ketone) - silica membranes by 1H solid-state NMR",

abstract = "The state of water in fully hydrated sulfonated poly(ether ether ketone) - silica hybrid proton exchange membranes were characterized in terms of the exchange rate between bound and free water, the water dynamics in each phase, and the relative water populations by 1H ODESSA and transverse magnetization relaxation NMR. The exchange rate, the amount of bound water, and the reorientation of free water molecules increase in the presence of silica particles. The dynamics of bound water was described by the L{\'e}vy statistics with a Cauchy propagator. The proton exchange membranes performances could be improved by addition of small concentrations of silica in the range of 5-10 wt.%.",

author = "Maria Baias and Demco, {Dan E.} and Bernhard Bl{\"u}mich and Martin M{\"o}ller",

note = "Funding Information: The authors thank Dr. I. Colicchio for samples preparation. The useful discussions with Dr. Xiaomin Zhu and Dr. Rostislav Vinokur are gratefully acknowledged. D.E.D. gratefully acknowledges the support of Romanian Ministry of Education and Research under Project PN II, ID-1102.",

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doi = "10.1016/j.cplett.2009.03.063",

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AU - Baias, Maria

AU - Demco, Dan E.

AU - Blümich, Bernhard

AU - Möller, Martin

N1 - Funding Information: The authors thank Dr. I. Colicchio for samples preparation. The useful discussions with Dr. Xiaomin Zhu and Dr. Rostislav Vinokur are gratefully acknowledged. D.E.D. gratefully acknowledges the support of Romanian Ministry of Education and Research under Project PN II, ID-1102.

PY - 2009/4/29

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N2 - The state of water in fully hydrated sulfonated poly(ether ether ketone) - silica hybrid proton exchange membranes were characterized in terms of the exchange rate between bound and free water, the water dynamics in each phase, and the relative water populations by 1H ODESSA and transverse magnetization relaxation NMR. The exchange rate, the amount of bound water, and the reorientation of free water molecules increase in the presence of silica particles. The dynamics of bound water was described by the Lévy statistics with a Cauchy propagator. The proton exchange membranes performances could be improved by addition of small concentrations of silica in the range of 5-10 wt.%.

AB - The state of water in fully hydrated sulfonated poly(ether ether ketone) - silica hybrid proton exchange membranes were characterized in terms of the exchange rate between bound and free water, the water dynamics in each phase, and the relative water populations by 1H ODESSA and transverse magnetization relaxation NMR. The exchange rate, the amount of bound water, and the reorientation of free water molecules increase in the presence of silica particles. The dynamics of bound water was described by the Lévy statistics with a Cauchy propagator. The proton exchange membranes performances could be improved by addition of small concentrations of silica in the range of 5-10 wt.%.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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State of water in hybrid sulfonated poly(ether ether ketone) - silica membranes by ¹H solid-state NMR

Abstract

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