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Membranes 2015, 5(1), 1-10;

Characteristics of PVDF Membranes Irradiated by Electron Beam

Department of Physics, Bu-Ali Sina University, Hamedan 65174, Iran
Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
Author to whom correspondence should be addressed.
Academic Editor: Spas D. Kolev
Received: 2 July 2014 / Accepted: 24 November 2014 / Published: 5 January 2015
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Polyvinylidene fluoride (PVDF) membranes were exposed vertically to a high energy electron beam (EB) in air, at room temperature. The chemical changes were examined by Fourier Transform Infrared Spectroscopy (FTIR). The surface morphologies were studied by Scanning Electron Microscopy (SEM) and showed some changes in the pore size. Thermogravimetric (TGA) analysis represented an increase in the thermal stability of PVDF due to irradiation. Electron paramagnetic resonance (EPR) showed the presence of free radicals in the irradiated PVDF. The effect of EB irradiation on the electrical properties of the membranes was analyzed in order to determine the dielectric constant, and an increase in the dielectric constant was found on increasing the dose. The surface hydrophilicity of the modified membrane was characterized by water contact angle measurement. The contact angle decreased compared to the original angle, indicating an improvement of surface hydrophilicity. Filtration results also showed that the pure water flux (PWF) of the modified membrane was lower than that of the unirradiated membrane. View Full-Text
Keywords: electron beam irradiation; membrane; PVDF electron beam irradiation; membrane; PVDF

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Jaleh, B.; Gavary, N.; Fakhri, P.; Muensit, N.; Taheri, S.M. Characteristics of PVDF Membranes Irradiated by Electron Beam. Membranes 2015, 5, 1-10.

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