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Articles by Junhwa Shin
Total Records ( 2 ) for Junhwa Shin
  Youn-Mook Lim , Sung-Jun An , Hae-Kyoung Kim , Yun-Hye Kim , Min-Ho Youn , Hui-Jeong Gwon , Junhwa Shin and Young-Chang Nho
  Atopic dermatitis (AD) is a familial and chronic inflammatory pruritic skin disease that affects a large number of children and adults in industrialized countries. It is known that one of the prominent features of AD and chronic pruritus is partially due to the histamine released from mast cell. In this work, hydrogel patches with natural herbal extracts were prepared by “freezing and thawing”, and a gamma irradiation. It showed eminent healing results as a consequence of long-term moisturizing effects and natural herbal extracts on atopic wounds. Besides its non-toxicity and human harmlessness, it can be easily attached to or detached from the skin without any trace and help patients to feel refreshment when attached. Based on this work, the hydrogel patches we made can be potentially used as an alternative remedy for not only pruritus in AD, but other dermatitis.
  Joon-Yong Sohn , Jong Su Im , Sung-Jin Gwon , Jae-Hak Choi , Junhwa Shin and Young-Chang Nho
  In this study, polyethylene separators were modified by dip coating of polyethylene (PE) separators in poly(vinylidene fluoride-co-hexafluoropropylene)/poly(ethylene glycol) dimethacrylate (PVDF-HFP/PEGDMA) mixtures at different humidity levels (0–50%), followed by electron beam irradiation. Micro-porous structures of the coating layer were generated by performing dip-coating process at high humidity levels (i.e. phase inversion process) and were found to be affected by the PEGDMA content and humidity level. The thermal shrinkage of the prepared separators significantly decreased with increasing EB absorption dose due to the formation of crosslinked networks of the PVDF-HFP/PEGDMA-coated PE separators. It was also observed that the separators prepared under high humidity condition showed a higher liquid electrolyte uptake and the ionic conductivity than the original PE separators.
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