Synthesis and Characterization of Sulfonated Poly(phthalazinone ether sulfone)(sPPES)/Silica Membrane for Proton Exchange Membrane Materials

Kim, Dae Sik; Park, Ho Bum; Nam, Sang Young; Rhim, Ji Won; Lee, Young Moo

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자료유형: 학술저널

저자정보: Kim, Dae Sik (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyang University) Park, Ho Bum (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyang University) Nam, Sang Young (Department of Polymer Science and Engineering, Gyeongsang National University, Engineering Research Institute) Rhim, Ji Won (Department of Chemical Engineering Hannam University) Lee, Young Moo (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyang University)

저널정보: 한국막학회 Korean Membrane Journal Korean membrane journal 제6권 제1호

발행연도: 2004.1

수록면: 44 - 54 (11page)

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Organic-inorganic composite membranes based on sulfonated poly(phthalazinone ether sulfone) (sPPES)/silica hybrid were prepared using the sol-gel process under acidic conditions. The sulfonation of PPES with concentrated sulfuric acid as sulfonation agent was carried out to prepare proton exchange membrane material. The behaviors of the proton conductivity and methanol permeability are depended on the sulfonation time (5-100 hr). The hybrid membranes composed of highly sulfonated PPES (IEC value: 1.42 meq./g) and silica were fabricated from different silica content (5-20 wt%) in order to achieve desirable proton conductivity and methanol permeability demanded for fuel cell applications. The silica particles within membranes were used for the purpose of blocking excessive methanol cross-over and for forming the path way to transport of the proton due to absorbing water molecules with ≡SiOH on silica. The presence of silica particles in the organic polymer matrix results in hybrid membranes with reduced methanol permeability and improved proton conductivity.

#sulfonated poly #phthalazinone ether sulfone) #silica #proton conductivity #methanol permeability #hybrid membrane

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Kim, Dae Sik

소속기관 National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyang University