Abstract
The refractive index (RI) of polymer nanocomposite of poly(vinyl alcohol) films with nanoparticle inclusions with low concentration up to 1.2 wt. % was investigated. Accurate refractometric measurements, by a specially designed laser microrefractometer, were performed at wavelengths 532 and 632.8 nm. The influence of concentration on the RI dispersion curves was predicted based on the well-known Sellmeier model. The theoretical analysis, in a small filling factor approximation, was performed, and a relation between the effective RI of the nanocomposite and weight concentrations of the nanofiller was derived. The experimental values were approximated by two different functions (linear and a quadratic polynom). The polynomial approximation yields better result, where .
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Pramitha Vayalamkuzhi, Rani Joseph, Krishnapillai Sreekumar, and Cheranellore Sudha Kartha
Appl. Opt. 50(18) 2886-2891 (2011)
Seong-Shan Yap, Wee-Ong Siew, Teck-Yong Tou, and Seik-Weng Ng
Appl. Opt. 41(9) 1725-1728 (2002)
Shencheng Fu, Xintong Zhang, Runyuan Han, Shiyu Sun, Lingling Wang, and Yichun Liu
Appl. Opt. 51(16) 3357-3363 (2012)