基于KH570表面改性氧化锌量子点的透明聚甲基丙烯酸甲酯/氧化锌纳米复合材料

Transparent poly(methyl methacrylate)/ZnO nanocomposites based on KH570 surface modified ZnO quantum dots.

作者信息

Wang Weiying, Liu Jie, Yu Xibin, Yang Guangqian

机构信息

Department of Chemistry, Shanghai Normal University, Shang'hai 200234, China.

出版信息

J Nanosci Nanotechnol. 2010 Aug;10(8):5196-201. doi: 10.1166/jnn.2010.2223.

DOI:10.1166/jnn.2010.2223

PMID:21125870

Abstract

Transparent luminescent ZnO embedded PMMA polymer has been synthesized by means of grafting poly(methyl methacrylate) (PMMA) onto the surface of ZnO QDs after g-methacryloxypropyl trimethoxy silane (KH570) modification. The resulting ZnO/PMMA nanocomposites with KH570-modified nanoparticles have better dispersibility and preserve the superior luminescence of ZnO nanoparticles in the nanocomposites. The obtained PMMA/ZnO nanocomposite films show high transparency, high UV-shielding efficiency and improved thermal stability. The obtained nanocomposite was characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), X-ray powder diffraction (XRD), thermogravimetry (TG), ultraviolet-visible (UV-vis) absorption spectroscopy.

摘要

通过在经γ-甲基丙烯酰氧基丙基三甲氧基硅烷（KH570）改性的ZnO量子点表面接枝聚甲基丙烯酸甲酯（PMMA），合成了透明发光的ZnO嵌入PMMA聚合物。所得具有KH570改性纳米粒子的ZnO/PMMA纳米复合材料具有更好的分散性，并在纳米复合材料中保留了ZnO纳米粒子的优异发光性能。所制备的PMMA/ZnO纳米复合薄膜具有高透明度、高紫外线屏蔽效率和改善的热稳定性。通过傅里叶变换红外光谱（FT-IR）、透射电子显微镜（TEM）、X射线粉末衍射（XRD）、热重分析（TG）、紫外可见（UV-vis）吸收光谱对所得纳米复合材料进行了表征。