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Solvent Resistant Hydrolyzed Polyacrylonitrile Membranes

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We have studied the solvent resistance of polyacrylonitrile membranes hydrolyzed by NaOH. The hydrolyzed polyacrylonitrile membranes provide a candidate material for either the selective layer or the supporting layer for the solvent resistant composite membrane. The origin of this solvent resistance is summarized. Polyacrylonitrile (PAN) cation-exchange NF membranes were prepared from ultrafiltration (UF) membranes through a convenient way developed recently by us. Several explanations for the difference of various solvent permeability coefficients of the cation-exchange PAN NF membrane were also suggested. Relatively high permeability was observed for the solvents with a benzene ring structure. Furthermore, products of their viscosities and permeability, [image omitted], are close to a constant.

Keywords: Nanofiltration membrane; polyacrylonitrile; pure solvent permeability coefficients; solvent resistance

Document Type: Research Article


Affiliations: Center of Advanced Materials for the Purification of Water with Systems, Department of Material Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA

Publication date: September 1, 2009

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