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Bulletin of Materials Science

, 41:160 | Cite as

Study of optical properties of potassium permanganate (\(\hbox {KMnO}_{4}\)) doped poly(methylmethacrylate) (PMMA) composite films

  • Ankit Kumar Gupta
  • Minal Bafna
  • Y K Vijay
Article
  • 1 Downloads

Abstract

We have developed films of pure polymethylmethacrylate (PMMA) (0.5, 1, 2 and 5%) and potassium permanganate \((\hbox {KMnO}_{4})\)-doped PMMA composite films of thickness (\(\sim 100\, \upmu \hbox {m}\)) using the solution-cast technique. To identify the possible change that happen to the PMMA films due to doping, the optical properties were investigated for different concentrations of \(\hbox {KMnO}_{4}\) by recording the absorbance (A) and transmittance (\(T\%\)) spectra of these films using UV–Vis spectrophotometer in the wavelength range of 300–1100 nm. From the data obtained from the optical parameters viz. absorption coefficient (\(\alpha \)), extinction coefficient (\(\kappa \)), finesse coefficient (F), refractive index (\(\eta \)), real and imaginary parts of dielectric constant (\(\varepsilon _{\mathrm{r}}\) and \(\varepsilon _{\mathrm{i}})\) and optical conductivity (\(\sigma \)) were calculated for the prepared films. The indirect optical band gap for the pure and the doped-PMMA films were also estimated.

Keywords

PMMA–\(\hbox {KMnO}_{4}\) composite films optical properties energy band gap dielectric constant 

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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Department of PhysicsAgrawal P. G. CollegeJaipurIndia
  2. 2.Department of PhysicsVivekananda Global UniversityJaipurIndia

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