A. Yu. Pulyalina, N. S. Tyan, I. I. Faykov, G. A. Polotskaya, V. A. Rostovtseva
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引用次数: 2
摘要
这项工作表明，在共聚亚胺/纳米金刚石(coPI/ND)复合材料的基础上，形成具有不对称多孔结构的膜的可能性。通过x射线衍射分析、热重分析、扫描电子显微镜和红外光谱研究了纳米金刚石以及引入离子液体后溶剂性质的变化对膜结构和热性能的影响。研究了蛋白质水溶液超滤过程中膜的输运特性。研究了离子液体的加入对优化输运特性的影响。研究表明，基于coPI/ND复合材料的膜具有更高的水力性能:与基于PA的膜相比，引入高达3wt %的ND并使用离子液体作为助溶剂可使通量增加到600 L m−2 h−1 bar−1。
Transport Properties of Ultrafiltration Membranes Based on Copolyimide/Nanodiamonds Composites
This work shows the possibility of formation of membranes with an asymmetric porous structure based on copolyimide/nanodiamonds (coPI/ND) composites. The influence of nanodiamonds as well as variation of the nature of the solvent by introducing an ionic liquid on the structure and thermal properties of the membranes is investigated by X-ray diffraction analysis, thermogravimetric analysis, scanning electron microscopy, and IR spectroscopy. The transport properties of the membranes are investigated in the process of ultrafiltration of aqueous solutions of proteins. The effect of the additions of an ionic liquid on the optimization of transport characteristics is carried out. It is shown that membranes based on coPI/ND composites possess increased hydraulic performance: the introduction of up to 3 wt % ND and use of an ionic liquid as a cosolvent lead to increase in the flux up to 600 L m−2 h−1 bar−1 compared to a membrane based on PA.
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.
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