Výsledky vyhledávání - "Eui-Won Choe"

High-Temperature Polybenzimidazole Fuel Cell Membranes via a Sol−Gel Process

Autor: Eugene Scanlon, Diana F. Rogers, L. S. Ramanathan, Eui-Won Choe, Lixiang Xiao, Haifeng Zhang, Brian C. Benicewicz, Tom Apple

Publikováno v: Chemistry of Materials. 17:5328-5333

A sol−gel process is described to produce phosphoric acid (PA)-doped polybenzimidazole (PBI) films that operate as fuel cell membranes above 150 °C for extended periods of time without the need for feed gas humidification. When solutions of high m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5401be3b6bb02c57e3274c49e164dcf
https://doi.org/10.1021/cm050831+

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Catalysts for the preparation of polybenzimidazoles

Autor: Eui-Won Choe

Publikováno v: Journal of Applied Polymer Science. 53:497-506

The single-stage preparation of poly[2,2′-(m-phenylene)-5,5′-bibenzimidazole] (PBI), from 3,3′,4,4′-tetraaminobiphenyl (TAB) with isophthalic acid (IPA) in the presence of a catalyst, was explored and developed. The effects of a variety of ca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6ceb36423a4da9c36895461bbed6bae
https://doi.org/10.1002/app.1994.070530504

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Synthesis and randomization of well-defined sequence, wholly aromatic copolyester/esteramides

Autor: Eui-Won Choe, Marie Borzo

Publikováno v: Journal of Applied Polymer Science. 53:621-632

Well-defined sequence, wholly aromatic copolyester/esteramides have been synthesized by an interfacial polycondensation of a preformed triad diacid chloride monomer, di(para-chlorocarbonylphenyl)isophthalate, with the disodium salt of hydroquinone or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4f26a5be9b42e3323c205a63071177e
https://doi.org/10.1002/app.1994.070530513

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High performance polymer blends

Autor: Tai-Shung Chung, Michael Jaffe, Eui Won Choe, Subhash Makhija, Paul N. Chen

Publikováno v: Advances in Polymer Science ISBN: 354058238X

This chapter is an overview of the science and technology of high temperature polymer blends, an area which has become a major topic of scientific investigation in the last two decades. The morphology and, hence, the property spectrum of polymer blen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a3fbfb3936bf0d4d49937420cb494e8
https://doi.org/10.1007/bfb0021202

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METHYL- AND 3,3,3-TRIFLUOROPROPYL-SUBSTITUTED m-XYLYLENESILOXANYLENE POLYMERS

Autor: Harold Rosenberg, Eui-won Choe

The synthesis and characterization of a new class of organosilicon polymers, the poly( m -xylylenesiloxanylenes) with general structure I, was undertaken as part of an investigation Figure options Download full-size image Download as PowerPoint slide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5db7bf69e24f05fdff2054ea3965ca9
https://doi.org/10.1016/b978-0-12-160850-7.50028-9

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THERMAL STABILITY-STRUCTURE CORRELATIONS IN ARYLENESILOXANYLENE POLYMERS

Autor: Harold Rosenberg, Ivan J. Goldfarb, Eui-won Choe

The need for new integral fuel tank sealants with use temperatures exceeding the limits of present materials has led to the synthesis in this laboratory of a family of new silicon-containing polymers. Inasmuch as the thermal stability of these polyme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::895a173996a1af03d0b84ad9d34a90c0
https://doi.org/10.1016/b978-0-12-160850-7.50029-0

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