Dielectric Relaxation Behaviour of Ethyl Methacrylate and Vinyl Acetate Grafted Poly[tetrafluoroethylene-co-(perfluorovinyl ether) Films Prepared by Direct Radiation Grafting Method]

Abdelaal, Mervat, Massarat B. S. Osman, Samia M. Mokhtar,

Abstract


ABSTRACT: Dielectric Relaxation Behaviour Poly(tetrafluoroethylene-co perfluorovinyl ether) (PFA) grafted by Ethyl Methacrylate (EMA) and Vinyl Acetate (VAc) of different compositions prepared by direct radiation was studied at 0.1, 1 and 100 KHz between 273 and 550 K. Two wellresolved relaxation peaks are observed in all Films except that with EMA/VAc of composition 10/90 wt% in which the second peak is masked. In OFA film grafted by EMA/VAc of 50/50 wt% at low temperature the third relaxation was observed. The activation Energy of conduction was evaluated. X- ray diffraction pattern and IR spectra were also measured.


Other data

Title Dielectric Relaxation Behaviour of Ethyl Methacrylate and Vinyl Acetate Grafted Poly[tetrafluoroethylene-co-(perfluorovinyl ether) Films Prepared by Direct Radiation Grafting Method]
Authors Abdelaal, Mervat ; Massarat B. S. Osman ; Samia M. Mokhtar 
Keywords Key Words: Dielectric constant / Dielectric Loss / Conductivity / Activation Energy
Issue Date 1996
Journal Polymer Journal. Vol. 28 No. 5. pp. 383-391 (1996) 
URI http://research.asu.edu.eg/handle/123456789/168070

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