Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (21): 2531-2538.DOI: 10.6023/A1102071C     Next Articles

Full Papers

表面活性剂存在条件下脲醛树脂杂化氧化硅微球的合成和表征

郝志显*,1,罗浩1,程艺艺1,王晓岗1,王利军2,,朱志荣1,甘礼华1,徐子颉1,陈龙武1   

  1. (1同济大学化学系 上海 200092)
    (2上海第二工业大学城市建设与环境工程学院 上海 201209)
  • 投稿日期:2011-02-07 修回日期:2011-05-09 发布日期:2011-07-04
  • 通讯作者: 郝志显 E-mail:haozhixian@mail.tongji.edu.cn
  • 基金资助:

    自然科学基金;上海市自然科学基金

Synthesis of Silica Microspheres under Hybridization of Urea-Formaldehyde Resin in the Presence of Surfactants

Hao Zhixian*,1 Luo Hao1 Cheng Yiyi1 Wang Xiaogang1 Wang Lijun2 Zhu Zhirong1 Gan Lihua1 Xu Zijie1 Chen Longwu1   

  1. (1 Department of Chemistry, Tongji University, Shanghai 200092)
    (2 Department of Environmental Engineering, Shanghai Second Polytechnic University, Shanghai 201209)
  • Received:2011-02-07 Revised:2011-05-09 Published:2011-07-04
  • Supported by:

    The National Natural Science Foundation of China

Synthesis of silica microspheres has been investigated by means of urea-formaldehyde resin hybridization in the presence of surfactants. Well dispersal and spherical hybrid microspheres are obtained in the presence of surfactants. The hybrid product from the P123 (PEO20-PPO70-PEO20) condition breaks down into shell-like debris after calcined at 600 ℃, while that of CTAB (cetyltrimethylammonium bromide) deforms severely and shrinks to the one-ninth of its precursor, however, the silica product from SDBS (sodium dodecyl benzene sulfonate) condition retains good morphology. The surface area of silica products obtained in the present of P123 and CTAB increase by 20% and 13% respectively, however, that of product remains constant with its pore volume and diameter decreased by half in the case of SDBS. Quantitative analysis showed that hybridization of silica nano-particles has been inhibited in the presence of surfactants, the amount of silica from the SDBS condition almost doubles after its impregnation in TEOS (tetraethyl orthosilicate) solution and this optimized geometry guarantees the integrity and stability of the silica microspheres.

Key words: silica hybrid microsphere, urea-formaldehyde resin, SDBS, surfactant

CLC Number: