The study on radiation grafting of acrylic acid onto fluorine-containing polymers. IV. Properties of membrane obtained by preirradiation grafting onto poly(tetrafluoroethylene-hexafluoropropylene)

Journal Article · Fri Apr 01 00:00:00 EST 1983 · J. Appl. Polym. Sci.; (United States)

DOI:https://doi.org/10.1002/app.1983.070280420· OSTI ID:5903196

Hegazy, E A; Tshigaki, I; Rabie, A; Dessouki, A M; Okamoto, J

Some properties of the membranes obtained by preirradiation grafting of acrylic acid onto poly(tetrafluoroethylene-hexafluoropropylene) (FEP) film have been investigated. Swelling behavior, dimensional change by grafting, electric conductivity, and mechanical properties of the grafted films were found to depend largely on the degree of grafting and to increase as the grafting proceeds. These properties were also found to be independent of the preparation conditions such as irradiation dose, grafting temperature, film thickness, and monomer concentration lower than 60 wt %. The electric conductivity of the membranes prepared at lower monomer concentration (lower than 60 wt %) is higher than that prepared at 80 wt % acrylic acid concentration. X-ray microscopy of the grafted film revealed that the grafting proceeds from both surfaces of the film to the direction of center to give finally homogeneous grafting through the whole bulk of film. At lower monomer concentration the homogeneous grafting was achieved at a degree of grafting around 18%, while at 80 wt % acrylic acid it was achieved at a degree of grafting higher than 70%. The homogeneously grafted membranes show good electrochemical and mechanical properties which make them acceptable for practical uses as cation-exchange membranes.

• Research Organization: Japan Atomic Energy Research Inst., Takasaki
• OSTI ID: 5903196
• Journal Information: J. Appl. Polym. Sci.; (United States), Vol. 28:4
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
36 MATERIALS SCIENCE
ACRYLIC ACID
CHEMICAL RADIATION EFFECTS
FLUORINATED ALIPHATIC HYDROCARBONS
ELECTRIC CONDUCTIVITY
GRAFT POLYMERS
ION EXCHANGE
IRRADIATION
MEMBRANES
MONOMERS
ORGANIC POLYMERS
CARBOXYLIC ACIDS
CHEMISTRY
ELECTRICAL PROPERTIES
HALOGENATED ALIPHATIC HYDROCARBONS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERS
RADIATION CHEMISTRY
RADIATION EFFECTS
400600* - Radiation Chemistry
360406 - Materials- Polymers & Plastics- Radiation Effects- (-1987)