beta-Cyclodextrin-based poly(ionic liquids) membranes enable the efficient separation of the amino acids mixture

文献类型： 外文期刊

第一作者： Yu, Wang

作者： Yu, Wang;Tan, Zhijian;Yu, Wang;Tan, Zhijian;Tan, Zhijian;Liu, Lianglei;Li, Fenfang

作者机构：

关键词： Poly(ionic liquid); Poly(ionic liquid) membrane; L-glutamic acid; L-threonine; Selective separation

期刊名称：JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY （ 影响因子：6.064； 五年影响因子：5.914 ）

ISSN： 1226-086X

年卷期： 2021 年 103 卷

页码：

收录情况： SCI

摘要： As a kind of novel polyelectrolyte materials, poly(ionic liquids) (PILs) have excellent potentiality in the separation of ampholytes suchlike amino acids. Herein, the beta-cyclodextrin-based PILs had been synthe-sized, followed by blending with poly(vinylidene fluoride) (PVDF) to prepare poly(ionic liquid) mem-branes (PILMs). The Fourier transformed infrared (FT-IR) spectroscopy, H-1 nuclear magnetic resonance (H-1 NMR), scanning electron microscope (SEM), thermal gravimetric analysis (TGA), mechanical strength, zeta potential, and pore size distribution were characterized for these membranes or their intermediates. These PILMs had been developed for the selection separation of the amino acids mixture of L-glutamic acid (L-Glu) and L-threonine (L-Thr). The factors influencing the separation result were investigated, including the solution pH of the amino acids mixture and the PVDF amount in PILMs. The maximum selectivity of 55% can be obtain by one-step separation under the optimal conditions. This separation pro-cess using PILMs had the advantages of good selectivity, low operating pressure, larger water flux, and good reusability, which had the potentiality in the separation of various amino acids mixtures. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

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