论文部分内容阅读
Carbon black(CB)/polymer composites with high refractive index(RI) were fabricated from poly(vinyl alcohol) (PVA) and covalently functionalized nano-CB(PVA-es-CB) by simple esterification reaction.Transmission electron microscopy showed that uniform aggregates of PVA-es-CB nanoparticles with a size smaller than 100 nm formed in the nanocomposite films.EUipsometric measurements indicated that the PVA-es-CB/PVA composite films had a RI in the range 1.520-1.598 linearly increased with the PVA-es-CB volume content.Theoretical equation based on Lorentz-Lorenz theory provided reasonably close estimation of the refractive indices to the experimentally observed values.The hybrid films also revealed relatively good surface planarity,thermal stability and optical transparency.
Carbon black (CB) / polymer composites with high refractive index (RI) were fabricated from poly (vinyl alcohol) (PVA) and covalently functionalized nano-CB (PVA-es-CB) by simple esterification reaction. Transmission electron microscopy showed that uniform aggregates of PVA-es-CB nanoparticles with a smaller smaller than 100 nm formed in the nanocomposite films. Euripsometric measurements indicated that the PVA-es-CB / PVA composite films had a RI in the range of 1.520-1.598 linearly increased with the PVA- es-CB volume content. theorem based on Lorentz-Lorenz theory provided reasonably close estimation of the refractive indices to the experimentally observed values. the hybrid films also revealed relatively good surface planarity, thermal stability and optical transparency.