Synthesis and Properties of Polysulfones for Fabricating Porous Hollow-Fiber Membranes

IF 2 Q4 CHEMISTRY, PHYSICAL

Membranes and Membrane Technologies Pub Date : 2023-06-05 DOI:10.1134/S2517751623030022

I. L. Borisov, D. N. Matveev, T. S. Anokhina, K. T. Shakhmurzova, A. A. Zhansitov, A. L. Slonov, Zh. I. Kurdanova, S. Yu. Khashirova, V. V. Volkov

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Abstract

Polysulfones are synthesized in aprotic dipolar solvents, such as dimethylacetamide, N-methyl-2-pyrrolidone, and dimethyl sulfoxide, in a wide range of molecular weights from 42 000 to 184 000 g/mol for hollow-fiber membranes spinning for the first time. Dependence of the thermal and mechanical properties of polysulfones on molecular weight characteristics is investigated. A comparison of the mechanical properties of the synthesized PSF and commercial PSF Ultrason S 6010 (BASF, Germany) and PSF-150 (JSC Institute of Plastics, Russia) shows that the synthesized polymers are not inferior to their commercial analogs and some samples even surpass them in terms of the elastic modulus and strength. According to the dynamic viscosity of spinning solutions, promising PSF samples are chosen to form porous hollow-fiber supports. It is demonstrated that the hollow-fiber supports based on PSF with a molecular weight of 110 000 g/mol have a high nitrogen permeability of 47.5 m³/(m² h bar). These supports show promise for casting composite membranes with a thin selective layer.

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多孔中空纤维膜用聚砜的合成及性能研究

首次在二甲基乙酰胺、n -甲基-2-吡咯烷酮、二甲基亚砜等非质子偶极溶剂中合成了分子量为42000 ~ 184000 g/mol的聚砜，用于中空纤维膜纺丝。研究了聚砜的热性能和力学性能与分子量特性的关系。将合成的PSF与商用PSF Ultrason S 6010(德国巴斯夫)和PSF-150(俄罗斯JSC塑料研究所)的力学性能进行了比较，结果表明，合成的聚合物在弹性模量和强度方面不逊于其商用类似物，有些样品甚至超过了它们。根据纺丝溶液的动态粘度，选择有潜力的聚砜样品形成多孔中空纤维支架。结果表明，分子量为11万g/mol的PSF中空纤维支架具有47.5 m3/(m2 h bar)的高氮渗透率。这些支撑物有望铸造具有薄选择层的复合膜。

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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.