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폴리에틸렌테레프탈레이트의 용융거동에 미치는 기핵제의 영향 : ethylene terephtalate
나상권,공병기,최창용,나재운 한국공업화학회 2004 응용화학 Vol.8 No.1
Effect of nucleating agent on the melting behavior of PET was studied by DSC. The low crystallization temperature(T_(ch)) shifted to the low temperature and the nonisothermal crystallization peak temperatures(T_(cc)) shifted to the higher temperature as the concentration of the nucleating agent increased.
공병기,나상권,최창용,나재운 한국공업화학회 2004 응용화학 Vol.8 No.2
Generally, photocatalysis can be applied to get energy economically, synthesize the useful materials, and remove environmentally harmful materials by transforming solar energy to chemical energy. Recently, the availability of photocatalysis has largely interested in the environment of Ubiquitous. Therefore, the study for photocatalysis has progressed by many investigators in domestic. In this study, titania sol was prepared by the sol-gel proess and characteristics of the products was investigated by TGA, XRD and SEM.
공병기,나상권,최창용,나재운 한국공업화학회 2004 응용화학 Vol.8 No.2
Stable titania sols for preparation of TiO₂ thin films were synthesized from titanium tetra isopropoxide. TiO₂ thin films were prepared with by dipping the sols on the glass substrates, and the properties of the films were investigated with XRD, SEM and EDS.
졸-겔 법에 의해 제조된 광촉매 화합물의 항균 및 탈취 특성
공병기,최창용,나상권,나재운 한국공업화학회 2004 응용화학 Vol.8 No.1
Photocatalysis, which can be applied to get energy economically, to synthesis useful materials, and to remove environmentally harmful materials by transforming solar energy to chemical energy, has many advantages. In this study, photocatalystic compound was prepared by sol-gel technique for antimicrobial activity and deodorization. It showed that in case of deodorization, formaldehyde and ammonia were degraded by 98.3 and 97.1%, respectively. In addition, this compound gives the highest efficiency for disinfection of E. coli and S. aureus.