Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (12): 2487.

• Articles • Previous Articles     Next Articles

Composite Nanospheres of PAA/silica Controlled by Anionic Polymer

LI Li-Ying1,2, WANG Jin-Gui2, CHEN Tie-Hong2*   

  1. 1. School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300160, China;
    2. Tianjin Key Laboratory of Energy Material Chemistry, Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2009-05-10 Online:2009-12-10 Published:2009-12-10
  • Contact: CHEN Tie-Hong. E-mail: chenth@nankai.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20373029)资助.

Abstract:

The anionic polymer, poly(acrylic acid)(PAA), was used to synthesize composite nanospheres of PAA/silica with 3-aminopropyltrimethoxysilane(APMS) and tetraethyl orthosilicate(TEOS) as silica source. In the synthesis, the assembly of PAA, APMS and TEOS follows the mechanism of the anionic surfactant templated mesoporous silica(AMS) through a S-N+-I- pathway, where S stands for the anionic PAA, I stands for inorganic precursors(TEOS) and N stands for co-structure-directing agent(APMS). The results of SEM, TEM, TG and FTIR show that the average size of composite nanospheres of PAA/silica is 80 nm. Furthermore, it was proved that addition of organic solvent such as THF could tune the size of the composite spheres.

Key words: Anionic polymer; Poly(acrylic acid); Silica; Composite nanosphere

TrendMD: