Effect of Titanosilicate Mineral Natisite on Gas Transport Properties of Copolyimide P84

IF 2 Q4 CHEMISTRY, PHYSICAL

Membranes and Membrane Technologies Pub Date : 2025-03-18 DOI:10.1134/S2517751625600037

A. E. Mukhin, G. A. Polotskaya, E. B. Lodonova, I. S. Kuryndin, V. N. Yakovenchuk, G. O. Kalashnikova, A. Yu. Pulyalina

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Abstract

The development of membrane processes requires new materials for the fabrication of highly efficient membranes. In this work, a composite based on copolyimide P84 with a novel modifier, the titanosilicate mineral natisite, used an additive has been created. For this purpose, natisite has been synthesized and identified. The composite P84/natisite (5 wt %) prepared in a DMF solution was used to obtain a flat film membrane. The physicochemical, mechanical, and gas transport properties of the P84/natisite membrane were studied in comparison with the P84 membrane. The transport properties were evaluated by the permeability of the membranes to He, O₂, N₂, and CO₂. The gas permeability through the membranes made of the composite is lower than that of the pure P84 membrane, and the H₂/N₂, CO₂/N₂, and O₂/N₂ selectivities are improved by including the modifier natisite. It is shown that the presence of 5 wt % natisite does not significantly alter the mechanical properties of the P84/natisite (5%) membrane, which meet the performance requirements.

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钛硅酸盐矿物原生石对共聚亚胺P84气体输运性能的影响

膜工艺的发展需要新的材料来制造高效的膜。在这项工作中，以共聚亚胺P84为基础，用一种新的改性剂，钛硅酸盐矿物原生土，添加添加剂，制备了一种复合材料。为此，已合成并鉴定了原生土。在DMF溶液中制备了P84/原生土（5 wt %）复合材料，得到了一种平面膜。研究了P84/原生土膜与P84膜的物理化学、力学和气体输运特性。通过膜对He、O2、N2和CO2的渗透性来评价膜的传输特性。该复合材料制备的膜的透气性低于纯P84膜，并通过添加改性剂原生土提高了H2/N2、CO2/N2和O2/N2的选择性。结果表明，5 wt %的原生石的存在对P84/原生石（5%）膜的力学性能没有显著影响，满足性能要求。

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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.