A temperature-responsive mixed matrix membrane based on poly(ionic liquid)@poly(N-isopropylacrylaminde) microgels and polyvinylidene fluoride for the selective separation of citrus flavonoids

文献类型： 外文期刊

第一作者： Qin, Zongkui

作者： Qin, Zongkui;Lei, Tian;Liu, Leilei;Wang, Shanshan;Liu, Leilei;Tan, Zhijian

作者机构：

关键词： Citrus flavonoids; Membrane separation; Temperature-responsive mixed matrix; membranes; Poly(ionic liquid)s; Bioactive compounds

期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：4.8； 五年影响因子：4.5 ）

ISSN： 0026-265X

年卷期： 2024 年 199 卷

页码：

收录情况： SCI

摘要： Herein, four novel poly(ionic liquid)@poly(N-isopropylacrylaminde) microgels were prepared and doped into polyvinylidene fluoride (PVDF) to fabricate eight temperature-responsive mixed matrix membranes (TRMs) for the efficient separation of natural citrus flavonoids, viz. naringin, neohesperidin, naringenin, and hesperetin. Dynamic light scattering of microgels in water at 20 and 50 degrees C confirmed their temperature-responsive properties. Water flux of TRMs at different temperatures proved their switchable response characteristic between 30 and 35 degrees C. The mechanical property, pore size distribution, porosity, and specific surface area of these TRMs were measured. Moreover, the chemical structure, microstructure, hydrophobicity, thermostability, anti-fouling performance, and charge property were also confirmed for them. The M4 membrane exhibited a maximum separation selectivity of 81.66% at 20 degrees C. Binding energy of G4 microgel to flavanone glycosides through Hbonding was greater than that of G4/flavanones. These TRMs, as a kind of novel separation materials, have the potential in the separation of various natural products.

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