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HEPA Filter Tests Using PLS and Composite Nanospheres  

Hwang, Min-Jin (Center for Functional Nano Fine Chemicals and School of Applied Chemical Engineering, Chonnam National University)
Sung, Dong Chan (Dong Yang Chemical Co., Ltd.)
Moon, Hee (Center for Functional Nano Fine Chemicals and School of Applied Chemical Engineering, Chonnam National University)
Publication Information
Applied Chemistry for Engineering / v.24, no.4, 2013 , pp. 357-362 More about this Journal
Abstract
Monodispersed polystyrene latex spheres (PLS) and PS-MPS/silica composite nanospheres were used to test high efficiency particulate air (HEPA) filters. Prior to filter tests, all nanospheres used in this work were characterized by measuring their average particle diameters and coefficients of variation (CV) for assessing them as artificial dusts. The average particle sizes of PLS and composite nanospheres could be well controlled in the range of 100~300 nm well by changing reaction temperature and the amount of a stabilizer during emulsion polymerization. The CV of all nanospheres were also in the range of 3~7%, lower than 15% that is the criterion for monodispersed particle distributions. Furthermore the results of HEPA filter tests show that all nanospheres used were quite proper as artificial dusts for testing air filters.
Keywords
polystyrene latex spheres; PS/silica composite spheres; artificial dusts; monodispersed; high efficiency particulate air filter test;
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