%0 Journal Article
%T Electrical and optical properties of well
%A Ayman S Ayesh
%A Emad AM Farrag
%A Rami A Abdel-Rahem
%A SS Ibrahim
%J Journal of Thermoplastic Composite Materials
%@ 1530-7980
%D 2019
%R 10.1177/0892705718759705
%X Series of polymer nanocomposites films consisting of pretreated multiwalled carbon nanotubes (PT-MWCNTs) and poly (vinyl alcohol) (PVA) were prepared at room temperature. The MWCNTs were initially pretreated with 1.0 M sulfuric acid (PT-MWCNTs) and then allowed to disperse in aqueous solutions at different pH values (2¨C14). It was found that the dispersion of the PT-MWCNTs is a pH dependent. The best PT-MWCNTs dispersion was obtained at pH = 10. Films of PT-MWCNTs/PVA, at this optimum pH-value, were then prepared by casting technique at different PT-MWCNTs weight fractions. The resulted PT-MWCNTs/PVA films were characterized through the direct visualization, Fourier transform infrared, and morphology test. Besides, current¨Cvoltage and direct current electrical conductivity for PT-MWCNTs/PVA nanocomposites at 60ˇăC showed that the conductivity mechanism was ohmic and the percolation threshold was around 0.8 wt% PT-MWCNTs. Optical results showed that PT-MWCNTs are homogeneously distributed in the neat PVA and optical gap is significantly decreased from 4.40 to 2.96 eV
%K Electrical
%K dispersion
%K MWCNTs
%K PVA
%K pH
%U https://journals.sagepub.com/doi/full/10.1177/0892705718759705