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박재중,황기섭,이찬민,이준영 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
Formaldehyde is a probable human carcinogen, an allergen, and an intense irritant of eyes and mucous membranes and is therefore highly problematic as an indoor pollutant. While there are numerous methods for detecting and measuring gaseous formaldehyde, there remains a need for an inexpensive, sensitive, and rapid analytical technology. pH-sensitive chromic textiles are promising materials that can be used as flexible sensor systems providing an easily visible signal. However to date, mainly conventional dyeing techniques have been applied for obtaining these textile sensors, which limits the possibilities in terms of pH-sensitive dyes and textile types. Therefore, The pH sensible material was obtained via sol-gel by using methyl red, a pH indicator, siloxane precursor. In conclusion, sol-gel showed to be a highly effective technique for the development of flexible sensors which allow for monitoring pH-variations through a color change.
박재중,황기섭,이준영 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
We successfully synthesized Poly(styrene-co-maleic anhydride) (PSMA) by using the co-polymerization system of styrene and maleic anhydride monomer. Then, PSMA-PEI copolymer was synthesized by reaction between PSMA copolymer and NH2 bond of Polyetyleneimine (PEI). The molecular weight is changed by controlling the amount of styrene, maleic anhydride and PEI was analyzed by GPC. PSMA-PEI copolymer was characterized by using FT-IR and 1H-NMR spectra. Also, the thermal property of PSMA-PEI copolymer was confirmed by DSC and TGA analysis.