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김병주 한국교육정치학회 2015 한국교육정치학회 학술대회논문집 Vol.39 No.-
그동안 우리나라 대학교육은 양적 팽창에도 불구하고 질적 수준은 높지 않다는 지적을 많이 받아 왔다(김병주 외, 2014). 연구경쟁력은 세계적 수준에 근접하고 있지만, 학부교육의 질은 떨 어지고, 기업들은 대학교육의 현장 적합도가 미흡하고 신규직원의 재교육 부담이 크다고 지적한 다. 주요 기업들의 신입직원에 대한 직업능력 만족도는 72점, 신입사원이 평가한 대학교육의 산 업현장 적용도는 48점에 불과하다(경영계, 2009). 국내 기업 인사담당자는 신입사원이 `인성, 도덕성, 창의성, 의사소통력, 리더십도 부족하다”고 지적한다(채창균, 옥준필, 2006).
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김병주,배경민,안계혁,박수진 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.10
Aluminum oxide (Al2O3) nanofibers were treated thermally under an ammonia (NH3) gas stream balanced by nitrogen to form a thin aluminum nitride (AlN) layer on the nanofibers, resulting in the enhancement of thermal conductivity of Al2O3/epoxy nanocomposites. The micro-structural and morphological properties of the NH3- assisted thermally-treated Al2O3 nanofibers were characterized by X-ray diffraction (XRD) and atomic force microscopy (AEM), respectively. The surface characteristics and pore structures were observed by X-ray photoelectron spectroscopy (XPS), Zeta-potential and N2/77 K isothermal adsorptions. From the results, the formation of AlN on Al2O3 nanofibers was confirmed by XRD and XPS. The thermal conductivity (TC) of the modified Al2O3 nanofibers/epoxy composites increased with increasing treated temperatures. On the other hand, the severely treated Al2O3/epoxy composites showed a decrease in TC, resulting from a decrease in the probability of heat-transfer networks between the filler and matrix in this system due to the aggregation of nanofiber fillers.
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Elemental Mercury Adsorption Behaviors of Chemically Modified Activated Carbons
김병주,배경민,Kay-Hyeok An,박수진 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.4
In this work, the effects of different surface functional groups on the elemental mercury adsorption of porous carbons modified by chemical treatments were investigated. The surface properties of the treated carbons were observed by Boehm’s titration and X-ray photoelectron spectroscopy (XPS). It was found that the textural properties, including specific surface area and pore structures, slightly decreased after the treatments, while the oxygen content of the ACs was predominantly enhanced. Elemental mercury adsorption behaviors of the acidtreated ACs were found to be four or three times better than those of non-treated ACs or base-treated ACs,respectively. This result indicates that the different compositions of surface functional groups can lead to the high elemental mercury adsorption capacity of the ACs. In case of the acid-treated ACs, the R_(C=O)/R_(C-O) and R_(COOH)/R_(C-O) showed higher values than those of other samples, indicating that there is a considerable relationship between mercury adsorption and surface functional groups on the ACs.
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Roles of Nickel Layer Deposition on Surface and Electric Properties of Carbon Fibers
김병주,임승순,이재열,박종규,송흥섭,문철환,배경민,최웅기,박수진 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.5
Electroless plating of metallic nickel on carbon fiber surfaces was carried out to control specific electric resistivity of the fibers, and the effects of the nickel content and coating thickness on the electric properties were studied. The structural and surface properties of the carbon fibers were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The specific resistivity of the fibers was measured using a four-point probe testing method. From the XPS results, the oxygen and Ni atomic ratio of the fibers was greatly enhanced as the plating time increased. Additionally, it was observed that the specific electric resistivity decreased considerably in the presence of metallic nickel particles and with the formation of nickel layers on carbon fibers.
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A Study of the Optimum Pore Structure for Mercury Vapor Adsorption
김병주,배경민,박수진 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.5
In this study, mercury vapor adsorption behaviors for some kinds of porous materials having various pore structures were investigated. The specific surface area and pore structures were studied by BET and D-R plot methods from N2/77 K adsorption isotherms. It was found that the micropore materials (activated carbons,ACs) showed the highest mercury adsorption capacity. In a comparative study of mesoporous materials (SBA-15 and MCM-41), the adsorption capacity of the SBA-15 was higher than that of MCM-41. From the pore structure analysis, it was found that SBA-15 has a higher micropore fraction compared to MCM-41. This result indicates that the mercury vapor adsorptions can be determined by two factors. The first factor is the specific surface area of the adsorbent, and the second is the micropore fraction when the specific surface areas of the adsorbent are similar.
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김병주,Joon-Hyung Byun,박수진 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.8
In this work, mechanical and electrical properties of graphenes (GP)/carbon nanotubes (CNTs) co-reinforced high density polyethylene (HDPE) matrix composites were studied. The microstructure, morphologies, and electric properties of the composites were evaluated by XRD, TEM, and 4-probe methods, respectively. It was found that the electric resistivity of 0.5 wt %-GP/HDPE was immeasurable, and 2.0 wt %-CNTs/HDPE showed high resistivity (6.02 × 104 Ω·cm). Meanwhile, GP (0.5 wt %)/CNTs (2.0 wt %)/HDPE showed excellent low resistivity (3.1 × 102 Ω·cm). This result indicates that the co-reinforcement systems can dramatically decrease electric resistivity of the carbon/polymer nanocomposites.
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