Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/1919
Title: Anomalous transmittance of polystyrene-ceria nanocomposites at high particle loadings†
Authors: Parlak, Onur
Demir, Mustafa Muammer
Keywords: Composite films
Polystyrenes
Nanocomposites
Exponential decays
Issue Date: 14-Jan-2013
Publisher: Royal Society of Chemistry
Source: Parlak, O., and Demir, M.M. (2013). Anomalous transmittance of polystyrene-ceria nanocomposites at high particle loadings. Royal Society of Chemistry, 1(2), 290-298. doi: 10.1039/c2tc00084a
Abstract: Optical nanocomposites based on transparent polymers and nanosized pigment particles have usually been produced at low particle concentrations due to the undesirable optical scattering of the pigment particles. However, the contribution of the particles to many physical properties is realized at high concentrations. In this study, nanocomposites were prepared with transparent polystyrene (PS) and organophilic CeO2 nanoparticles using various compositions in which the particle content was up to 95 wt%. The particles, capped by 3-methacryloxypropyltrimethoxysilane (MPS), were dispersed into PS and the transmittance of the spin-coated composite films was examined over the UV-visible region. When the particle concentration was <20 wt%, the transmittance of the films showed a first-order exponential decay as the Rayleigh scattering theory proposes. However, a positive deviation was observed from the decay function for higher particle contents. The improvement in transmittance may be a consequence of interference in the multiple scattering of light by the quasi-ordered internal microstructure that gradually develops as the particle concentration increases.
URI: http://doi.org/10.1039/c2tc00084a
http://hdl.handle.net/11147/1919
ISSN: 2050-7534
2050-7526
2050-7534
Appears in Collections:Chemistry / Kimya
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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