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서해천,이선영,김현철,박노정,길명섭,Seo, Hae-Cheon,Lee, Sun-Young,Kim, Hyun-Cheol,Park, No-Jeong,Khil, Myung-Seob 한국섬유공학회 2021 한국섬유공학회지 Vol.58 No.3
Since natural dyes show poor affinity for cellulosic fibers such as cotton and viscose, the dyeing of cotton fabrics with natural dyes requires mordanting treatment. The purpose of this study is to investigate the effect of the soy flour compared to casein sodium salt and soy protein acid as a natural mordant on the dyeability of the cotton fabrics dyed with caesalpinia sappan extracts. As a result, the total K/S value of soy flour treated and untreated cotton fabrics dyed with 40% of caesalpinia sappan extracts were 107.14 and 74.21, respectively. After mordanting and washing, the total K/S value of pre-mordanting treated and untreated cotton fabrics was 69.50 and 42.77, respectively. Therefore treatment of soy flour as a mordant shows relatively excellent dyeability compared to the untreated sample.
서해천,강영식,최경은,오태환,길명섭,Seo, Hae-Cheon,Kang, Young-Sic,Choi, Kyung-Eun,Oh, Tae-Hwan,Khil, Myung-Seob 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.6
A polyhedral oligomeric silsesquioxane (POSS) macromonomer with the cage structure of $Si_8O_{12}$ consists of an inorganic silicon and oxygen core surrounded by organic groups on the corners. In this study, POSS was blended with polyurethane and electrospun to produce organic/inorganic hybrid nanofibrous mats. Silica was formed on the nanofibers after exposing the nanofibrous mats to silicic acid under ambient conditions. Structural characterization was analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The morphological difference resulted from the condition of water evaporation and the hybrid with and without the POSS after silicification. The thermal behavior was examined by thermogravimetric analysis (TGA). These 3D inorganic-organic hybrids have potential applications as templates for photonic materials, novel membranes, and scaffolds for hard tissue.