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*   

  1. (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*   

  1. (Institute of Polymer Science, Zhejiang University, Hangzhou 310027)
  • Received:2006-10-10 Revised:2007-03-26 Published:2007-09-14
  • Contact: Yang Mu-Jie

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