Abstract
We successfully dispersed amorphous bismuth titanate nanoparticles (<50 nm)in situ in poly-hydroxy ethyl methacrylate via a sol-gel process. Since less than 20% of the polymer composition is bismuth titanate by weight, the material exhibits high refractive indices (>1.6) and good optical transparency (>90% transmittance from 530 to 800 nm). Furthermore, this highly cross-linked material has an improved thermal stability and a lower coefficient of thermal expansion than that of neat polymers. The material also displays a high dielectric constant (>10) without ferroelectricity. Thus the material has potential applications in optical lenses, optical waveguides, and capacitors.
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Su, WF., Lee, JF., Chen, MY. et al. Bismuth titanate nanoparticles dispersed polyacrylates. Journal of Materials Research 19, 2343–2348 (2004). https://doi.org/10.1557/JMR.2004.0312
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DOI: https://doi.org/10.1557/JMR.2004.0312