10 Result(s)
within
Jongchul Seo
English
Nanochemistry
Nanotechnology
Polymer Sciences
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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,Nā²-bismaleimide-4,4ā²-diphenylmethane (BMI), epoxy resin (diglycidyl ether of bisphenol-A (DGEBA)), and 4,4ā-diamino diphenyl methane (DDM). The thermal pro...
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Article
Synthesis and characterization of novel PPC-silica hybrid with improved thermal, mechanical, and water sorption properties
Organic-inorganic hybrids (H1-H5) based on environmentally friendly and biodegradable polymer, poly (propylene carbonate) (PPC) and tetraethoxysilane (TEOS) were synthesized using the sol-gel technique. The sy...
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Article
Preparation of cationic latent initiators containing imidazole group and their effects on the properties of DGEBA epoxy resin
The thermal cationic latent initiators, N-benzyl-3-methylimidazolium hexafluoroantimonate (BMH1) and N-butyl-3-methylimidazolium hexafluoroantimonate (BMH2) were synthesized and applied to the thermal cationic po...
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Article
Synthesis and characterization of novel UV-Curable PU-Si hybrids: Influence of silica on thermal, mechanical, and water sorption properties of polyurethane acrylates
Organic-inorganic hybrid membranes (HM1-HM4) were synthesized by incorporating 3 wt% (HM1), 5 wt% (HM2), 10 wt% (HM3), and 20 wt% (HM4) of silica precursors into UV-curable polyurethane acrylate (PU) matrix us...
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Article
Enhanced moisture barrier films based on EVOH/exfoliated graphite (EGn) nanocomposite films by solution blending
A series of ethyl-vinyl alcohol (EVOH) nanocomposite films with exfoliated graphite nanosheets (EGn) were prepared via a solution blending method and their physical and moisture barrier properties were investigat...
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Article
Water sorption behavior in polyimide thin films controlled by inorganic additives
We investigated the decreased water diffusivity depending on the content and size of carbon black (CB) added to polyimide (PI) in order to synthesize composite films (PI-CB). CBs with different diameters were ...
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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...
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Article
Preparation and properties of poly(vinyl alcohol)/vinyltrimethoxysilane (PVA/VTMS) hybrid films with enhanced thermal stability and oxygen barrier properties
To enhance the thermal stability and barrier properties of pure poly(vinyl alcohol) (PVA), a series of poly(vinyl alcohol)/vinyltrimethoxysilane (PVA/VTMS) hybrid films were prepared via a sol-gel process, and th...
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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...
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Article
Water resistance and antimicrobial properties of poly(vinyl alcohol) composite films containing surface-modified tetrapod zinc oxide whiskers
Tetrapod zinc oxide whiskers (TZnO-W) were successfully synthesized via a thermal oxidation method and surface-modified TZnO-W (STZnO-W) were prepared using a silane coupling agent to ensure good dispersion in...
