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    Article

    Norbornene end-capped polyimide for low CTE and low residual stress with changes in the diamine linkages

    The effects of norbornene (NE) crosslinking and diamine bridge linkages (ether, sulfone, and trifluoromethyl) on polyimide films were investigated. The purpose of this study was to study the behavior of the NE...

    Taewon Yoo, Kwangin Kim, Patrick Han, Wonbong Jang, Haksoo Han in Macromolecular Research (2015)

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    Article

    Effects of the paraffin wax (PW) content on the thermal and permeation properties of the LDPE/PW composite films

    A series of low density polyethylene/paraffin wax (LDPE/PW) composite films were fabricated via a twin-screw extruder, and their morphologies, thermal properties, gas and vapor permeations, and surface propert...

    Dowan Kim, Insik Park, Jongchul Seo, Haksoo Han in Journal of Polymer Research (2015)

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    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)

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    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)

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    Article

    Thermal properties and water sorption behaviors of epoxy and bismaleimide composites

    In this work, we prepared epoxy/BMI composites by usingN,Nā€²-bismaleimide-4,4ā€²-diphenylmethane (BMI), epoxy resin (diglycidyl ether of bisphenol-A (DGEBA)), and 4,4ā€™-diamino diphenyl methane (DDM). The thermal pro...

    Jongchul Seo, Wonbong Jang, Haksoo Han in Macromolecular Research (2007)