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The WS(2)dependence on the elasticity and optical band gap energies of swollen PAAm composites

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Date
2020
Author
Evingür, Gülsen Akın
Sağlam, Nafia Alara
Çimen, Büşra
Uysal, Bengü Özuğur
Pekcan, Önder
Abstract
New generation nano-filler polymer composites have many applications including biomedical, electronic and maritime related applications because of their mechanical, electronic and optical properties. The properties of composites were investigated as a function of nano-filler content. Among these, tungsten disulfide (WS2) has the potential to be used as a component in electronic devices owing to its high electron mobility and easily tunable optical band gap energy. Tungsten disulfide (WS2)- Polyacrylamide (PAAm) composite was prepared using free radical co-polymerization and wet laboratory methods with WS(2)content. Composites were characterized for mechanical and optical properties using an Elasticity Instrument and UV-vis Spectrophotometer, respectively. Elastic modulus was modeled by a statistical thermodynamics model. Tauc's and Urbach's Tail model for direct transition were used to model for the optical band gap. In this study, the swelling and WS(2)effect on the optical band gap and elasticity of WS2- PAAm composites were investigated. It was observed that the elasticity presented a reversed behavior of optical band gap energies with respect to WS(2)content. For the applications of nano-filler doped polymer composites in flexible electronic devices, WS(2)content strongly influences the mechanical and optical properties.

Source

Journal of Composite Materials

URI

https://hdl.handle.net/20.500.12469/3171

Collections

  • Araştırma Çıktıları / Scopus [1319]
  • Araştırma Çıktıları / WOS [1335]
  • Biyoinformatik ve Genetik / Bioinformatics and Genetics [212]

Keywords

Tungsten disulfide (WS2)
Polyacrylamide (PAAm)
UV-vis absorbance
Modulus
Optical band gap

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