Influence of ionic liquid content on properties of dense polymer membranes

Pervaporation was used for removal of butan-1-ol from its 5 wt.% of aqueous solution, at which the concentration of Clostridium acetobutylicum starts to decrease. The polydimethylsiloxane (PDMS) membrane containing 0, 10, 20 or 30 wt.% of benzyl-3-butylimidazolium tetrafluoroborate ([BBIM][BF 4]) io...

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Veröffentlicht in:	European polymer journal 2009-03, Vol.45 (3), p.813-819
Hauptverfasser:	Kohoutová, M., Sikora, A., Hovorka, Š., Randová, A., Schauer, J., Tišma, M., Setničková, K., Petričkovič, R., Guernik, S., Greenspoon, N., Izák, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Biofuel Clostridium acetobutylicum Dense polymer membranes Exact sciences and technology Exchange resins and membranes Fermentation Forms of application and semi-finished materials Ionic liquids Pervaporation Polymer industry, paints, wood Technology of polymers
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Beschreibung
Zusammenfassung:	Pervaporation was used for removal of butan-1-ol from its 5 wt.% of aqueous solution, at which the concentration of Clostridium acetobutylicum starts to decrease. The polydimethylsiloxane (PDMS) membrane containing 0, 10, 20 or 30 wt.% of benzyl-3-butylimidazolium tetrafluoroborate ([BBIM][BF 4]) ionic liquid was used. Differential scanning calorimetry measurements showed that PDMS-[BBIM][BF 4] membranes (though optically homogeneous) contained PDMS and [BBIM][BF 4] phases. Pervaporation selectivity increased and total flux through membranes raised moderately with an increased content of [BBIM][BF 4] in PDMS-[BBIM][BF 4] membranes. Hence, immobilization of a proper ionic liquid in a membrane results in the creation of pervaporation membranes, effective in the removal of alcohol from fermentation broths.
ISSN:	0014-3057 1873-1945
DOI:	10.1016/j.eurpolymj.2008.11.043