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

Journal Article · Thu Oct 01 00:00:00 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), Vol. 27:12; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
10 SYNTHETIC FUELS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ETHANOL
MEMBRANE TRANSPORT
MEMBRANES
CHEMICAL PREPARATION
PERFORMANCE
ACRYLATES
AQUEOUS SOLUTIONS
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
MORPHOLOGY
PERMEABILITY
POLYETHYLENE GLYCOLS
POLYMERIZATION
POLYMERS
QUANTITY RATIO
SCANNING ELECTRON MICROSCOPY
SWELLING
ALCOHOLS
CARBOXYLIC ACID SALTS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
DISPERSIONS
ELECTRON MICROSCOPY
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
MICROSCOPY
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
SEPARATION PROCESSES
SOLUTIONS
SYNTHESIS
090900* - Biomass Fuels- Processing- (1990-)
100200 - Synthetic Fuels- Production- (1990-)
400105 - Separation Procedures