Synthesis of Functional TiO2 Nanoparticles and Its Effects on Physical Properties of Polymethyl Methacrylate

被引：0
|
作者：
Gu X. [1 ]
Hu L. [1 ]
Fu Z. [1 ]
Xu H. [1 ]
Li Y. [1 ]
Yan D. [1 ]
机构：
[1] College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou
[2] College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 01期
关键词：
Graft modification; Nano TiO[!sub]2[!/sub; Polymethyl methacrylate; Refractive index; Transparency;
D O I：
10.16865/j.cnki.1000-7555.2021.0013
中图分类号：
学科分类号：
摘要：
Herein, titanium dioxide (TiO2) nanoparticles were prepared via hydrothermal method. Functionalized TiO2 nanoparticles (M-TiO2) with quantitative polymethyl methacrylate (PMMA) branches were synthesized using "grafting-onto" strategy. FT-IR and TGA results exhibit that TiO2 surface is successfully grafted with long side chains of PMMA, and the PMMA graft density is 0.042 nm-2. Subsequently, TiO2 nanoparticles with or without PMMA branches were compounded with PMMA matrix by melt blending. Compared with pure TiO2, the M-TiO2 has better dispersion in PMMA, and no obvious agglomeration is observed under SEM and TEM. Through the transmittance-haze characterization, it is found that the optical performance of PMMA composite with 5% barren TiO2 is poor (transmittance: 83.7%, haze: 15.99%). With the same loading level of M-TiO2, the transmittance and haze of resultant composite (transmittance: 90.0%, haze: 4.96%) are very close to the bulk PMMA, and the refractive index can be improved from 1.487 to 1.524. Besides, the mechanical properties and thermal stability of PMMA/M-TiO2 nanocomposites are also improved significantly. This provides a novel and reliable way for the preparation of organic-inorganic hybrid nanocomposites with high mechanical performance and excellent optical refractive properties. © 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：1 / 7and31
页数：730
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