In-situ preparation of core-shell-like scatterers and their effects on optical and mechanical properties of PC-matrix light diffusing materials

Publication date: 5 February 2017
Source:Materials & Design, Volume 115
Author(s): Ziru Zhao, Jiangdong Qiu, Ying Xiong, Xiao Liu, Jiabin Shen, Shaoyun Guo
In this study, a light diffusing material containing in-situ formed core-shell-like scatterers was easily prepared by the melt blending process depending on the selective dispersion of organic silicone bead (OSB) in polycarbonate (PC)/poly (styrene-co-acrylonitrile) (SAN) blend. The morphology of scatterers was modulated by the content of SAN and the diameter of OSB, and their effects on performance of PC-matrix blend were studied in detail. The scattering angle has been markedly improved due to the multi-scattering effect of core-shell-like scatterers, while the transmittance decreased and then followed by an increase with increasing content of SAN. At the same time, the haze, shielding ability, processability as well as tensile strength were also enhanced with addition of SAN. Moreover, samples added to OSB in small diameter obtained larger scattering angle, higher haze and lower transmittance compared with their counterparts added to larger one. In general, a light diffusing PC/SAN/OSB material containing core-shell-like scatterers was prepared, which has large scattering angle, high transmittance, high haze and good mechanical property.

Graphical abstract

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