Tian Yao*, Jialin Liu, Baohua Liu and Jialing Song,
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引用次数: 0
Abstract
Thermosensitive magnetic ionic liquid was applied to fabricate an aqueous biphasic system with pH-sensitive copolymers. These novel systems are responsive to an external magnetic field, enabling accelerated phase separation with the simple application of a magnet. The phase-forming reagents, comprising thermosensitive magnetic ionic liquid and pH-sensitive copolymers, can be effortlessly recovered through heating and pH adjustment, without the need for any use of organic solvents. In this study, liquid–liquid equilibrium data of the developed triple-responsive aqueous biphasic systems ([BMIMPPG400BMIM][Tempo-OSO3]2 + different PADB + H2O) at three different temperatures were determined under 0.1 MPa. The Merchuk equation was utilized to model the experimental binodal data, with all systems demonstrating satisfactory correlation performance. Higher temperatures were found to be beneficial for the formation of the aqueous biphasic system, and the phase-forming abilities of pH-sensitive copolymers are ranked in this order: PADB4.06 > PADB4.7 > PADB6.0. The tie-line data for different PADB at 298.15 K were ascertained and correlated by two empirical equations, both exhibiting good correlation performance. All of these measured liquid–liquid equilibrium data and the theoretical correlations of these green triple-responsive aqueous biphasic systems provide us a valuable reference for future endeavors in the field of extraction and purification.
期刊介绍:
The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.