Optical and structural properties of polyvinylidene fluoride (PVDF) / reduced graphene oxide (RGO) nanocomposites

Abstract Nanocomposites consisting of polyvinylidene fluoride [PVDF] and reduced graphene oxide [RGO] were fabricated by solution casting method. TEM image of the RGO exhibits paper-like structure with single or very thin layers. FTIR and XRD revealed that the structure of PVDF is strongly affected upon the addition of RGO and the β-phase fraction was found to increase on the expense of α-phase. DSC data indicates that increasing the RGO content decreases the nanocomposites crystallinity. Optical properties were investigated in the wavelength range (200–800 nm). The effect of RGO content on the optical band gap was studied. Doppler broadening parameters (S and W) of 511 keV annihilation radiations were measured. A reasonable correlation was found between S-parameter, the crystallinity and the optical band gap. Doppler broadening parameters provide an explanation of the positronium formation as well as the type and concentration of defects in the investigated composites.

• Publication year

  2018

• Venue

  Journal of Molecular Structure

• Publication date

  2018-10-01

• Fields of study

  Chemistry, Materials Science, Physics

• Identifiers
  DOI 10.1016/J.MOLSTRUC.2018.05.083
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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