New Hybrid Membrane Based on Poly(m-phenylene-iso-phthalamide) for Pervaporation of Methanol/n-Heptane Azeotropic Mixture

IF 2 Q4 CHEMISTRY, PHYSICAL

Membranes and Membrane Technologies Pub Date : 2023-08-06 DOI:10.1134/S2517751623040054

A. Yu. Pulyalina, I. I. Faykov, A. S. Sorokina, N. S. Tian, I. S. Kuryndin, G. A. Polotskaya

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引用次数: 0

Abstract

The object of this work is a new hybrid membrane based on poly(m-phenylene-iso-phthalamide) (PA) modified with a complex filler consisting of equal amounts of heteroarm star-shaped macromolecules (HSMs) and [BMIM⁺Tf₂N^–] ionic liquid (IL). Comparative studies of the structures have been carried out on samples of membranes made of pristine PA and hybrid PA/HSM and PA/(HSM:IL) containing 5 wt % additives. Methods of AFM, X-ray powder diffraction, measurement of density, and contact angles have been used. The transport properties of membranes have been studied in separation of a methanol/n-heptane mixture by the pervaporation method. The actuality of this problem is associated with the process of oil refining. In pervaporation of an azeotropic methanol/n-heptane mixture, the hybrid PA/(HSM:IL) membrane has demonstrated higher performance and separation factor relative to reference membranes. Mechanical tests of the membranes have revealed a high level of properties important for operation (strength and relative elongation) of the hybrid membrane.

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基于聚间苯-异邻苯二胺的新型杂化膜用于甲醇/正庚烷共沸混合物的渗透蒸发

本研究的目的是用等量的异臂星形大分子(HSMs)和[BMIM+Tf2N -]离子液体(IL)组成的复合填料对聚间苯-异邻苯二胺(PA)进行改性，制备一种新型杂化膜。在含有5 wt %添加剂的原始PA和混合PA/HSM和PA/(HSM:IL)制成的膜样品上进行了结构的比较研究。采用原子力显微镜、x射线粉末衍射、密度测量和接触角测量等方法。研究了渗透汽化法分离甲醇/正庚烷混合物时膜的输运特性。这一问题的现状与石油炼制过程有关。在共沸甲醇/正庚烷混合物的渗透汽化过程中，PA/(HSM:IL)混合膜比参比膜表现出更高的性能和分离系数。膜的机械测试已经揭示了高水平的性能重要的操作(强度和相对伸长率)的混合膜。

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来源期刊

Membranes and Membrane Technologies Multiple-

CiteScore

3.10

自引率

31.20%

发文量

期刊介绍： The journal Membranes and Membrane Technologies publishes original research articles and reviews devoted to scientific research and technological advancements in the field of membranes and membrane technologies, including the following main topics:novel membrane materials and creation of highly efficient polymeric and inorganic membranes;hybrid membranes, nanocomposites, and nanostructured membranes;aqueous and nonaqueous filtration processes (micro-, ultra-, and nanofiltration; reverse osmosis);gas separation;electromembrane processes and fuel cells;membrane pervaporation and membrane distillation;membrane catalysis and membrane reactors;water desalination and wastewater treatment;hybrid membrane processes;membrane sensors;membrane extraction and membrane emulsification;mathematical simulation of porous structures and membrane separation processes;membrane characterization;membrane technologies in industry (energy, mineral extraction, pharmaceutics and medicine, chemistry and petroleum chemistry, food industry, and others);membranes and protection of environment (“green chemistry”).The journal has been published in Russian already for several years, English translations of the content used to be integrated in the journal Petroleum Chemistry. This journal is a split off with additional topics.