Study on Nano TiO2 Grafted with Polystyrene and Its Resistance to UV Aging

Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (17): 1917-1921. Previous Articles Next Articles

Original Articles

纳米TiO₂表面接枝聚苯乙烯及其抗紫外老化研究

徐立新, 李为立, 杨慕杰*

(浙江大学高分子科学研究所杭州 310027)

投稿日期:2006-10-10 修回日期:2007-03-26 发布日期:2007-09-14
通讯作者: 杨慕杰

Study on Nano TiO₂ Grafted with Polystyrene and Its Resistance to UV Aging

XU Li-Xin; Li Wei-Li; Yang Mu-Jie*

(Institute of Polymer Science, Zhejiang University, Hangzhou 310027)

Received:2006-10-10 Revised:2007-03-26 Published:2007-09-14
Contact: Yang Mu-Jie

Abstract

The TiO₂ nanoparticles were treated using coupling agent γ-(trimethoxysilyl)propyl methacrylate (KH570) and then grafted on its surface with polystyrene (PSt) by dispersion polymerization. The TiO₂ nanoparticles treated have been characterized by FTIR, thermal gravimetry analysis (TGA), transmission electron microscopy (TEM), and the resistance to UV aging of TiO₂ nanoparticles in polypropylene/polystyrene (PP/PSt) are compared by artificial accelerated UV aging testing. The results show that KH570 and PSt were grafted on the surface of TiO₂ nanoparticles and the grafting ratio of PSt is about 60% (w). The TiO₂ nanoparticles grafted with PSt appear even microsphere in which the TiO₂ nanoparticles are wrapped. The dispersion status of TiO₂ nanoparticles in PP/PSt has improved remarkably and the resistance to UV aging are enhanced greatly by grafting with PSt.

Key words: nano TiO₂, polystyrene, surface grafting, resistance to UV aging

Cite this article

XU Li-Xin; Li Wei-Li; Yang Mu-Jie*. Study on Nano TiO₂ Grafted with Polystyrene and Its Resistance to UV Aging[J]. Acta Chimica Sinica, 2007, 65(17): 1917-1921.

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纳米TiO₂表面接枝聚苯乙烯及其抗紫外老化研究

Study on Nano TiO₂ Grafted with Polystyrene and Its Resistance to UV Aging

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纳米TiO2表面接枝聚苯乙烯及其抗紫外老化研究