Structural and optical properties of pure PVA/PPY and cobalt chloride doped PVA/PPY films

• Main Authors: G.M. Elkomy, S.M. Mousa, H. Abo Mostafa
• Format: Article
• Language: English
• Published: Elsevier 2016-11-01
• Series: Arabian Journal of Chemistry
• Subjects: PVA/PPY composite; CoCl2·6H2O; XRD; IR; TEM; Optical properties
• Online Access: http://www.sciencedirect.com/science/article/pii/S1878535212001050

Polyvinyl alcohol-polypyrrole (PVA/PPY) composite polymer films were prepared by chemical polymerization. Cobalt chloride CoCl2·6H2O was used at different concentrations as doping (x = 0.2–1.0 g). The produced films were characterized by X-ray diffraction (XRD), Infrared spectroscopy (IR) and transmission electron microscopy (TEM). The optical properties of all produced films were studied, where the optical absorption of the prepared films decreases with increasing the x value of CoCl2·6H2O in both VIS (500–700 nm) and UV (200–400 nm) regions. The calculated energy gaps (Eg1 and Eg2) were found to decrease as the CoCl2·6H2O concentration increases. While Eg3 tended to be constant as CoCl2·6H2O content increases.