“…PSF is extensively employed as an thermoplastic material in fabricating membranes for use in water ultrafiltration systems (Kaeselev, Pieracci, & Belfort, 2001;Kilduff, Mattaraj, Pieracci, & Belfort, 2000) and gas separation, such as in stripping carbon dioxide from natural gas streams and producing highly pure nitrogen from air (Liu, Chakma, & Feng, 2004). In particular, PSF is also used in ion exchange membranes in electro-membrane processes such as electrodialysis and polymer electrolyte membrane electrolysis (Yoshikawa, Hara, Tanigaki, Guiver, & Matsuura, 1992;Guiver et al, 2001). However, PSF membrane filter has very been used less in aerosol filtration, such as in aerosol sampling (Cullen, Field, & Sherrell, 2001).…”