Auteur Chang Keun Kim
Documents disponibles écrits par cet auteur (2)
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Article : texte imprimé
Hyungu Im, Auteur ; Hyomi Kim, Auteur ; Chang Keun Kim, Auteur |To enhance poor gas selectivity of polyimides based on hexafluoroisopropylidene diphthalic anhydride (6FDA), such as 6FDA−4,4′-hexafluoroisopropylidene diamine (6FDA−6FpDA) and 6FDA−6FpDA:diaminobenzoic acid (6FDA−6FpDA:DABA), membranes were fab[...]
Article : texte imprimé
Hyungu Im, Auteur ; Sang Chul Roh, Auteur ; Chang Keun Kim, Auteur |Thermoplastic polyurethane (TPU) elastomers are frequently used in underwater applications. Desirable polymeric materials have lower densities and lower swelling ratios for seawater and paraffin oil, along with better mechanical strength than TP[...]
