Permselective properties for aqueous ethanol solutions through copolymer membranes from benzyl methacrylate and polyethylene glycol dimethacrylate

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399208029226· OSTI ID:7076216

Okuno, Hiroshi; Okado, Takashi; Matsumoto, Akira; Oiwa, Masayoshi; Uragami, Tadashi ^[1]

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1. Kansai Univ., Osaka (Japan)

Copolymer membranes prepared by bulk copolymerization of polyethylene glycol dimethacrylates of three different degrees of polymerization as macromonomer and benzyl methacrylate as comonomer were used for the separation of aqueous ethanol solutions in both pervaporation and evapomeation. The copolymer membranes preferentially permeated water from an aqueous ethanol solutions in both pervaporation and evapomeation. The copolymer membranes preferentially permeated water from an aqueous ethanol solution in evapomeation. In pervaporation, ethanol was predominantly permeated from an aqueous ethanol solution through the copolymer membranes containing a long polyethylene glycol (PEG) chain above about 20 wt% PEG content in a copolymer. This result was attributed to a remarkable swelling of the copolymer membrane containing a long PEG chain by the aqueous ethanol solution in pervaporation. In evapomeation, both the separation factors and the permeation rates through these membranes are not much affected by the ethanol concentration in the feed vapor. In pervaporation, they were significantly dependent on the ethanol concentration in the feed solution. The above results are discussed from the viewpoint of the physical structure of the membrane in evapomeation and pervaporation.

• OSTI ID: 7076216
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 27:12; ISSN 0149-6395; ISSN SSTED
• Country of Publication: United States
• Language: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
ACRYLATES
ALCOHOLS
AQUEOUS SOLUTIONS
CARBOXYLIC ACID SALTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
DISPERSIONS
ELECTRON MICROSCOPY
ETHANOL
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
MEMBRANE TRANSPORT
MEMBRANES
MICROSCOPY
MIXTURES
MORPHOLOGY
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PERFORMANCE
PERMEABILITY
POLYETHYLENE GLYCOLS
POLYMERIZATION
POLYMERS
QUANTITY RATIO
SCANNING ELECTRON MICROSCOPY
SEPARATION PROCESSES
SOLUTIONS
SWELLING
SYNTHESIS