Novel multifunctional microspheres of polysiloxane@CeO2-PMMA: Optical properties and their application in optical diffusers
Novel multifunctional microspheres of polysiloxane@CeO2-PMMA: Optical properties and their application in optical diffusers
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新型多功能聚硅氧烷@CeO2-PMMA微球：光学性能及其在光扩散片中的应用
DOI：
10.1016/j.optmat.2013.09.007
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发表时间：
2013-12-01
影响因子：
3.9
通讯作者：
Yang, Xiaoming
中科院分区：
文献类型：
--
作者：
Hu, Jingang;Zhou, Yuming;Yang, Xiaoming
本研究描述了一种新的方法，使用微球颗粒的光学扩散在液晶显示器背光单元。采用一锅法合成了聚氧化铈/聚甲基丙烯酸甲酯杂化微球，并通过粉末透射电镜（TEM）、X射线衍射（XRD）、红外光谱（FT-IR）、紫外可见光谱（UV-vis）和扩散能力分析等手段对其物理化学性能进行了研究。FT-IR光谱分析和XRD分析证实了所合成材料的杂化结构。TEM和SEM结果表明，所合成的材料为具有常规结构的核壳微球。在抗辐射实验中，混合微球通过有效地吸收紫外线而表现出比传统塑料显著的改进。当聚硅氧烷@CeO2-聚（甲基丙烯酸甲酯）的量增加到8wt%时，微球阻挡了几乎所有的紫外光，高达97.5%。仅这种性质就表明，聚氧化铈@CeO2-聚（甲基丙烯酸甲酯）混合微球可能是对目前用于常规光学漫射体的材料的改进。我们还表征了含有聚硅氧烷@CeO2-PMMA核壳微球的新型光学漫射体的漫射能力，发现聚硅氧烷漫射体的光学漫射效果随着聚硅氧烷@CeO2-PMMA的量的增加而增加，超过了常规光学漫射体的漫射能力。(C)2013爱思唯尔有限公司版权所有。
This study describes a new approach to using microsphere particles for optical diffusion in a liquid crystal display backlighting unit. We developed a one pot synthesis of polysiloxane@CeO2-poly( methyl methacrylate) hybrid microspheres and examined its physical and chemical properties by powder transmission electron microscopy (TEM), X-ray diffraction (XRD) analysis, FT-IR spectra analysis, UV-vis spectra analysis and diffusing abilities analysis. FT-IR spectra analysis and XRD analysis confirmed the hybrid structure of the synthesized materials. The TEM and SEM results indicated that the synthesized materials are core-shell microspheres with a conventional structure. In an anti-radiation experiment the hybrid microspheres exhibited a significant improvement over conventional plastic by effectively absorbing ultraviolet light. When the amount of polysiloxane@CeO2-poly(methyl methacrylate) was increased to 8 wt%, the microspheres blocked almost all UV light, up to 97.5%. This quality alone suggests that polysiloxane@CeO2-poly(methyl methacrylate) hybrid microspheres may be an improvement over materials currently used in conventional optical diffusers. We also characterized diffusing abilities of a novel optical diffuser containing polysiloxane@CeO2-PMMA core-shell microspheres and found that a polysiloxane diffuser increased in optical diffusing effect as the quantity of polysiloxane@CeO2-PMMA increased, exceeding the diffusing abilities of conventional optical diffusers. (C) 2013 Elsevier B.V. All rights reserved.