Modification of polyacrylonitrile membranes by incoherent IR radiation


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

Polyacrylonitrile (PAN) membranes with the rejection coefficients of bovine serum albumin (Mw = 69000 Da) up to 97% have been developed. The effect of IR irradiation of PAN membranes at temperatures to 180°С has been studied for the first time. It has been found that the IR modification of the membranes at 120°С for 5 min makes PAN insoluble in a wide range of organic solvents. The test PAN membranes were obtained from PAN solutions in dimethyl sulfoxide (DMSO) with different polymer concentrations in casting solution. The morphology and filtration characteristics of the membranes are almost unaffected by the treatment. The permeability of the membranes to DMSO, dimethylformamide (DMF), dimethylacetamide (DMAA), and N-methyl-2-pyrrolidone (NMP) has been measured. It has been demonstrated that the IR-treated PAN membranes can be used for filtering the above solvents, although the initial polymer is soluble in these solvents. These membranes can also be used as supports of chemically resistant nanofiltration membranes for aprotic solvents.

Sobre autores

A. Yushkin

Topchiev Institute of Petrochemical Synthesis

Autor responsável pela correspondência
Email: Halex@ips.ac.ru
Rússia, Moscow

M. Efimov

Topchiev Institute of Petrochemical Synthesis

Email: Halex@ips.ac.ru
Rússia, Moscow

A. Vasilev

Topchiev Institute of Petrochemical Synthesis

Email: Halex@ips.ac.ru
Rússia, Moscow

Yu. Bogdanova

Department of Chemistry

Email: Halex@ips.ac.ru
Rússia, Moscow

V. Dolzhikova

Department of Chemistry

Email: Halex@ips.ac.ru
Rússia, Moscow

G. Karpacheva

Topchiev Institute of Petrochemical Synthesis

Email: Halex@ips.ac.ru
Rússia, Moscow

A. Volkov

Topchiev Institute of Petrochemical Synthesis

Email: Halex@ips.ac.ru
Rússia, Moscow

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Pleiades Publishing, Ltd., 2017