Pervaporation Characteristics in Removal of Benzene from Water through Polystyrene-Poly (Dimethylsiloxane) IPN Membranes

Autor:	Tadashi Uragami, Tadashi Shiraiwa, Takashi Miyata, Hiroshi Tamura, Tatsuo Yajima, Iusaku Sumida
Rok vydání:	2011
Předmět:	chemistry.chemical_compound Aqueous solution Membrane Materials science chemistry Chemical engineering Polymer chemistry Synthetic membrane Pervaporation Polystyrene Permeation Benzene Selectivity
Zdroj:	Materials Sciences and Applications. :169-179
ISSN:	2153-1188 2153-117X
Popis:	This paper focuses on the effects of the PSt content of polystyrene (PSt)-poly (dimethylsiloxane) (PDMS) interpenetrateing network (IPN) polymer membranes, on the pervaporation (PV) characteristics during the removal of benzene from an aqueous solution of dilute benzene. When an aqueous solution of 0.05wt% benzene was permeated through the PSt-PDMS IPN membranes, they showed high benzene/water selectivity. Both the permeability and the benzene/water selectivity of the membranes were enhanced with increasing PSt content in the PSt-PDMS IPN membrane. The physicochemical mechanism of permeation and separation through the PSt-PDMS IPN membranes during PV is also discussed. The best normalized permeation rate, separation factor for benzene selectivity, and PV separation index of the PSt-PDMS IPN membrane were 1.27 × 10-6 kgm (m2hr)-1, 3293, and 41821, respectively. These PV characteristics are discussed from the viewpoint of the chemical and physical structure of the PSt-PDMS IPN membranes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ea46fb9c5581b7d7eb521b82a16fdfbd https://doi.org/10.4236/msa.2011.23021 Zobrazit plný text záznamu