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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Plasma-treated Polymeric Nanofibers for High-efficiency PM2.5 capturing

2018년 2월 13일 16시 21분 32초
POLY.P-68 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 20일 (금요일) 11:00~12:30
Polymer Chemistry
저자 및
Ji Young Lee, oh seok kwon1,*
Applied Chemistry, Dongduk Women's University, Korea
1BNT research center, KRIBB, Korea
Particulate matter (PM) pollution is serious human health issue. Various filter technologies have been developed to improve the air filtration efficiency. Recently, nanofibrous membrane filters have received much attention due to its outstanding transparency and high efficiency for PM≤2.5μm (PM2.5) capture/removal compared to conventional micro-structured filters. Although these filters provide high-efficiency PM2.5 capture, obtaining strong PM adhesion via surface engineering remains a challenge. In this study, we demonstrate a high efficiency PM2.5 capture air-filter by electrospun polyacrylonitrile nanofibers (EPNFs). The surface of the EPNFs was modified by oxygen plasma treatment for generating functional groups such as CONH⁠2, COOH and COOR. The EPNFs were utilized as air filter in hand-made PM removal system which is consisted of DC power supply, PM source, PM sensor and PM removal test chamber. The test result showed high air flow and effective air filtration (PM2.5 removal efficiency: 94.02%, pressure drop: 18Pa, Time to reach the PM level recommended by the World Health Organization (T⁠WHO PM2.5): 15min, quality factor: 0.1564Pa⁠−1) compared to commercial filters. The intermolecular interaction between the plasma-treated EPNFs (PEPNFs) and PMs was investigated by density functional theory (DFT) calculations. The PEPNF filter showed high long-term reproducibility in a cycle test with a high PM concentration (over 2,000μgm⁠−3). The filter was applied as a car interior air purifier using a cigar jack as a power supply, ca. 16min was required to reach the PM level recommended by the World Health Organization (<25μgm⁠−3).