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  1. Article

    Open Access

    Proton Transport in Aluminum-Substituted Mesoporous Silica Channel-Embedded High-Temperature Anhydrous Proton-Exchange Membrane Fuel Cells

    Polymer composite membrane technology is promising for enhancing the performance of membrane electrode assemblies for high-temperature fuel cells. In this study, we developed a novel anhydrous proton-exchange ...

    Kwangwon Seo, Ki-Ho Nam, Haksoo Han in Scientific Reports (2020)

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    Article

    Dimensionally stable and light-colored polyimide hybrid reinforced with layered silicate

    Light-colored polyimide hybrids with a quaternary alkylammonium modified montmorillonite, Cloisite® 20A (C20A) were successfully synthesized via a solution intercalation method. The structural and morphological f...

    Ki-Ho Nam, Sejeong Kim, Jungkun Song, Seungsu Baek… in Macromolecular Research (2016)

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    Article

    Phlorotannins suppress adipogenesis in pre-adipocytes while enhancing osteoblastogenesis in pre-osteoblasts

    Osteoporosis, a prevalent bone disease in an aging population, is considered to be closely related to osteoblastogenesis and adipogenesis. As a part of an ongoing trend to develop natural substances that atten...

    Fatih Karadeniz, Byul-Nim Ahn, Jung-Ae Kim, Youngwan Seo… in Archives of Pharmacal Research (2015)

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    Article

    Effect of tetrapod ZnO whiskers on the physical and moisture barrier properties of transparent polyimide/TZnO-W composite films

    Tetrapod zinc oxide whiskers (TZnO-Ws) were successfully prepared by a thermal oxidation method and confirmed using scanning electron microscopy (SEM) and wide angle X-ray diffraction (WAXD). A series of polyi...

    Ki-Ho Nam, Dowan Kim, Jongchul Seo, Kwangwon Seo, Haksoo Han in Macromolecular Research (2014)

  5. No Access

    Article

    Effects of nanoclay on the properties of low temperature cured polyimide system

    Polyimide is a major polymer material in the electronics industry, and we conducted a study to cure polyimide at low temperatures in order to improve its thermal and mechanical properties. In this study, polyi...

    Kwangin Kim, Taewon Yoo, Ki-Ho Nam, Patrick Han, Wonbong Jang… in Macromolecular Research (2014)

  6. No Access

    Article

    Residual stress behavior and physical properties of transparent polyimide/surface-modified CaCO3 nanocomposite films

    A series of polyimide (PI) nanocomposite films with various surface-modified colloidal calcium carbonate (SCaCO3) contents were prepared and their physical properties were investigated to understand their possibl...

    Ki-Ho Nam, Jongchul Seo, Kwangwon Seo, Wonbong Jang, Haksoo Han in Macromolecular Research (2014)

  7. No Access

    Article

    Whitening effects of 4-hydroxyphenethyl alcohol isolated from water boiled with Hizikia fusiformis

    Isolation of phenolic compounds from water boiled with Hizikia fusiformis and purificartrion of the extracts from solvent fractions was achieved using column chromatography. The simple phenolic compound, 4-hydrox...

    Mi-Soon Jang, Hee-Yeon Park, Ki-Ho Nam in Food Science and Biotechnology (2014)