Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/1909
Title: Toward transparent nanocomposites based on polystyrene matrix and PMMA-grafted CeO 2 nanoparticles
Authors: Parlak, Onur
Demir, Mustafa Muammer
Keywords: Polymer matrix composites
Core shell nanoparticles
Index matching
Ceria
Light scattering
Optical nanocomposite
Polymerizable surfactant
Publisher: American Chemical Society
Source: Parlak, O., and Demir, M. M. (2011). Toward transparent nanocomposites based on polystyrene matrix and PMMA-grafted CeO 2 nanoparticles. ACS Applied Materials and Interfaces. 3(11), 4306-4314. doi:10.1021/am200983h
Abstract: The association of transparent polymer and nanosized pigment particles offers attractive optical materials for various potential and existing applications. However, the particles embedded into polymers scatter light due to refractive index (RI) mismatch and reduce transparency of the resulting composite material. In this study, optical composites based on polystyrene (PS) matrix and poly(methyl methacrylate) (PMMA)-grafted CeO 2 hybrid particles were prepared. CeO 2 nanoparticles with an average diameter of 18 ± 8 nm were precipitated by treating Ce(NO 3) ·6H 2O with urea in the presence of a polymerizable surfactant, 3-methacyloxypropyltrimethoxy silane. PMMA chains were grafted on the surface of the nanoparticles upon free radical in situ solution polymerization. While blending of unmodified CeO 2 particles with PS resulted in opaque films, the transparency of the composite films was remarkably enhanced when prepared by PMMA-grafted CeO 2 hybrid particles, particularly those having a PMMA thickness of 9 nm. The improvement in transparency is presumably due to the reduction in RI mismatch between CeO 2 particles and the PS matrix when using PMMA chains at the interface.
URI: http://doi.org/10.1021/am200983h
http://hdl.handle.net/11147/1909
ISSN: 1944-8244
1944-8244
1944-8252
Appears in Collections:Chemistry / Kimya
Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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