Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (06): 659-665. Previous Articles     Next Articles

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  1. (1厦门大学材料学院材料科学与工程系 厦门 361005)
    (2特种先进材料福建省重点实验室 厦门 361005)
  • 投稿日期:2010-05-19 修回日期:2010-09-05 发布日期:2010-10-21
  • 通讯作者: 程璇
  • 基金资助:


Synthesis of Hydrophobic Ordered Mesoporous Silica Films

Peng Chixiang1 Wu Guoyou1 Yu Yuxi*,1,2 Cheng Xuan*,1,2   

  1. (1 Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005) (2 Fujian Key Laboratory of Advanced Materials, Xiamen 361005)
  • Received:2010-05-19 Revised:2010-09-05 Published:2010-10-21
  • Contact: Xuan Cheng

Mesoporous silica films were synthesized by sol-gel process combined with evaporation-induced self-assembly (EISA) process using block copolymer EO20PO70EO20 (P123) as a template. The films were deposited on glass substrates by dip-coating method and were characterized by Fourier transform infrared (FT-IR) spectroscopy, small-angle X-ray diffraction (SAXD) spectroscopy, and high resolution transmission electron microscopy (HRTEM). The effects of heat treatment temperature and aging time on the micro- structure of mesoporous silica films were investigated. The surface modifications of silica films with different concentrations, aging time and temperatures were studied using trimethylchlorosilane (TMCS), g-amino- propyltriethoxysilane (KH-550) and polymethyl triethoxy silane (PTS). The results showed that the high degree orders of meosporous silica thin films with the pore sizes of 8 nm were obtained and the highly ordered mesoporous structures were slightly changed after the surface modification. The surfaces of films after modified with TMCS and KH-550 became hydrophobic. The contact angles of the thin films modified with TMCS and KH-550 were 112° and 96°, respectively. Furthermore, the modified thin films exhibited good moisture stability. The ordered mesoporous structure remained unchanged with the contact angle of 93°.

Key words: ordered mesoporous, silica films, surface modification

CLC Number: