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Effect of Core-shell Ceria/Poly(Vinylpyrrolidone) (PVP) Nanoparticles Incorporated in Polymer Films and Their Optical Properties (2): Increasing the Refractive Index

National Institute of Advanced Industrial Science and Technology (AIST), Shimo-shidami, Moriyama-ku, Nagoya 463-8560, Japan
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Academic Editor: Biqiong Chen
Materials 2017, 10(7), 710; https://doi.org/10.3390/ma10070710
Received: 1 May 2017 / Revised: 2 June 2017 / Accepted: 23 June 2017 / Published: 27 June 2017
(This article belongs to the Section Advanced Composites)
We investigated the preparation of well-dispersed core-shell ceria-poly(vinylpyrrolidone) (PVP) nanoparticles with an average particle size of around 20 nm which were used to produce a hybrid film with a polymer coating of dipentaerythritol hexaacrylate (DPHA). We obtained good dispersion of the nanoparticles in a mixed solvent of 48% 1-methoxy-2-propanol (MP), 32% 3-methoxy-3-methyl-1-butanol (MMB), and 20% methyl i-butyl ketone (MIBK). An ink of the polymer coating consisting of 68.7 wt% nanoparticles and 31.3 wt% DPHA with a polymerization initiator was prepared using this solvent mixture. The surface of the hybrid film showed low roughness and the nanoparticles formed a densely packed structure in the DPHA matrix. The resulting coating possessed excellent transparency and a high refractive index of 1.69. View Full-Text
Keywords: core-shell nanoparticles; cerium oxide; poly(vinylpyrrolidone); refractive index; dipentaerythritol hexaacrylate core-shell nanoparticles; cerium oxide; poly(vinylpyrrolidone); refractive index; dipentaerythritol hexaacrylate
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Itoh, T.; Uchida, T.; Izu, N.; Shin, W. Effect of Core-shell Ceria/Poly(Vinylpyrrolidone) (PVP) Nanoparticles Incorporated in Polymer Films and Their Optical Properties (2): Increasing the Refractive Index. Materials 2017, 10, 710.

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