Separation of liquid mixtures by using polymer membranes. IV. Water‐alcohol separation by pervaporation through modified acrylonitrile grafted polyvinyl alcohol copolymer (PVA‐G‐AN) membranes | Zendy

Chiang WenYen | Zendy; Huang ChingChong | Zendy

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Separation of liquid mixtures by using polymer membranes. IV. Water‐alcohol separation by pervaporation through modified acrylonitrile grafted polyvinyl alcohol copolymer (PVA‐G‐AN) membranes

Author(s) -

Chiang WenYen,

Huang ChingChong

Publication year - 1993

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1993.070480202

Subject(s) - pervaporation , polyvinyl alcohol , membrane , acrylonitrile , copolymer , chemical engineering , polymer chemistry , aqueous solution , materials science , polymer , alcohol , vinyl alcohol , chemistry , permeation , organic chemistry , composite material , biochemistry , engineering

The acrylonitrile (AN) grafted onto polyvinyl alcohol (PVA) can improve the mechanical properties and water resistance of PVA; however, its hydrophilicity is decreased. Prepared PVA‐g‐AN membranes through modification with the NaOH and HCHO aqueous solutions can enhance its hydrophilicity. This modified PVA‐g‐AN membranes were used to separate alcohol/water solution with the pervaporation method. The flux was increased from 0.72 kg/m 2 h of the original membrane to 2.06 kg/m 2 h of the modified membrane. Moreover, adding a small quantity of CoSO 4 to the water‐alcohol mixture can simultaneously increase the separation factor. © 1993 John Wiley & Sons, Inc.

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