THE IMPACT OF F -MWCNT ON PVA/F -MWCNT FILMS PHYSICAL PROPERTIES
Polyvinyl alcohol (PVA) and PVA/functionalized multi-walled carbon nanotube (PVA/f-MWCNT) films were were manufactured by a casting method. PVA was dissolved in distilled water, and the doping process of PVA was accomplished by utilizing f-MWCNTs. A different weight ratios (0, 1, 3, and 5 wt%) of the f-MWCNTs were added to PVA for enhance and modify their electrical and optical properties. The FE-SEM images revealed the morphology of PVA and PVA/f-MWCNT films was in generally good diffusion of f-MWCNTs in host polymer. The optical energy gap was determined from optical measurements in the wavelengths in the range of 300–1000 nm. The optical results indicated that the prepared films allowed direct transition, and the optical energy gap was dependent on the weight ratio of f-MWCNT as dopant. The electrical measurements showed that the electrical conductivity of the PVA/f-MWCNT film at 1 wt% was about 7.33E-09 S/cm, which increased to 92E-08 S/cm at 5 wt%.