Journal of the Iranian Chemical Society

, Volume 8, Supplement 1, pp S161–S168 | Cite as

UV-degradation effect on optical and surface properties of polystyrene-TiO2 nanocomposite film

  • B. Jaleh
  • M. Shayegani Madad
  • M. Farshchi Tabrizi
  • S. Habibi
  • R. Golbedaghi
  • M. R. Keymanesh


Thin films of polystyrene and polystyrene-TiO2 nanocomposite were prepared by spin coating from a polystyrene solution in which TiO2 nanoparticles were dispersed by mechanical mixing. Thin films of polystyrene (PS) and polystyrene-TiO2 nanocomposite were exposed to UV irradiation for varied time intervals. The effect of UV radiation on the optical properties, crystallinity, surface energy and degradation of PS-TiO2 nano-composite has been studied. X-Ray diffraction analysis (XRD), UV-Vis and FTIR spectroscopy, Atomic Force Microscopy (AFM) and contact angle measurement were used to study the induced changes of the properties of the irradiated PS-TiO2 nanocomposite. Optical band gaps and hydrophilicity in UV-irradiated samples were altered by destruction processes. The optical band gap values were found to reduce from 4.54 eV in pure PS to 4.45 eV for PS-TiO2 nanocomposite prior to irradiation. This value is further reduced to 3.46 after UV irradiation for 45 h.


PS-TiO2 UV Degradation Band gap AFM Nanocomposite 


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Copyright information

© Iranian Chemical Society 2011

Authors and Affiliations

  • B. Jaleh
    • 1
  • M. Shayegani Madad
    • 1
  • M. Farshchi Tabrizi
    • 2
  • S. Habibi
    • 1
  • R. Golbedaghi
    • 3
  • M. R. Keymanesh
    • 4
  1. 1.Physics DepartmentBu-Ali Sina UniversityHamedanIran
  2. 2.Max-Plank Institute for Polymer ResearchManizGermany
  3. 3.Department of ChemistryPayame Noor University (PNU)Iran
  4. 4.Construction Engineering and Management DepartmentPayame Noor University (PNU)Iran

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