A.C conductivity and dielectric properties of (PVA/PEO) blends doped with MWCNTs | ||
| Iraqi Journal of Physics | ||
| Article 1, Volume 14, Issue 30, August 2016, Pages 64-72 | ||
| Authors | ||
| Ahmad A. Hasan; Muna B. Jasim | ||
| Abstract | ||
| A.C electrical conductivity and dielectric properties for poly (vinyl alcohol)(PVA) /poly (ethylene oxide) (PEO) blends undoped and doped with multi-walled carbon nanotube (MWCNTs)with different concentrations (1,and 3 wt %) in the frequency range (25x103 -5x106 Hz) were investigated. Samples of (PVA/PEO) blends undoped and doped withMWCNTs were prepared using casting technique. The electrical conductivity measurements showed that σA.C is frequency dependent and obey the relation σA.C =Aωsfor undoped and doped blends with 1% MWCNTs, while it is frequency independent with increases of MWCNTs content to 3%. The exponent s showed proceeding increase with the increase of PEO ratio(≥50%) for undoped blends samples, while s value for doped blends exhibits to change in different manner, i.e. s increases and reach maximum value at 50/50 PVA/PEO, then decreases for residual doped blends samples with 1% MWCNTs on the other hand the exponent s decrease and reach minimum value at 50/50 PVA/PEO for samples doped with 3% MWCNTs, then return to increase. The results explained in different terms. | ||
| Keywords | ||
| Carbon Nanotubes; poly; poly; PVA; Nanocomposites; electrical properties | ||
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