TY - JOUR
T1 - Poly(ionic liquid)s as phase splitting promoters in aqueous biphasic systems
AU - João, Karen G.
AU - Tomé, Liliana C.
AU - Isik, Mehmet
AU - Mecerreyes, David
AU - Marrucho Ferreira, Isabel Maria
PY - 2015
Y1 - 2015
N2 - Aqueous biphasic systems (ABSs) provide a sustainable and efficient alternative to conventional liquid-liquid extraction techniques with volatile organic solvents, and can be used for the extraction, recovery, and purification of diverse solutes. In this work, and for the first time, ABSs composed of poly(ionic liquid)s (PILs) and inorganic salts were measured at 25 °C and atmospheric pressure. New PILs having pyrrolidinium polycations combined with different counter-anions, namely acetate [Ac]-, trifluoroacetate [TFAc]-, hexanoate [Hex]-, adipate [Adi]-, and citrate [Cit]- were synthesized, by a simple and environmentally-friendly procedure, and characterized. The effect of the PIL features, namely molecular weight and anionic character, and other experimental variables, such as temperature, on the phase splitting ability was researched. The aptitude of the studied ABS to be implemented as separation technologies was also evaluated through the use of a model biomolecule, tryptophan.
AB - Aqueous biphasic systems (ABSs) provide a sustainable and efficient alternative to conventional liquid-liquid extraction techniques with volatile organic solvents, and can be used for the extraction, recovery, and purification of diverse solutes. In this work, and for the first time, ABSs composed of poly(ionic liquid)s (PILs) and inorganic salts were measured at 25 °C and atmospheric pressure. New PILs having pyrrolidinium polycations combined with different counter-anions, namely acetate [Ac]-, trifluoroacetate [TFAc]-, hexanoate [Hex]-, adipate [Adi]-, and citrate [Cit]- were synthesized, by a simple and environmentally-friendly procedure, and characterized. The effect of the PIL features, namely molecular weight and anionic character, and other experimental variables, such as temperature, on the phase splitting ability was researched. The aptitude of the studied ABS to be implemented as separation technologies was also evaluated through the use of a model biomolecule, tryptophan.
UR - http://www.scopus.com/inward/record.url?scp=84944345743&partnerID=8YFLogxK
U2 - 10.1039/c5cp03521j
DO - 10.1039/c5cp03521j
M3 - Article
AN - SCOPUS:84944345743
SN - 1463-9076
VL - 17
SP - 27462
EP - 27472
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 41
ER -