Journal of Materials Science

, Volume 29, Issue 9, pp 2531–2535 | Cite as

Microstructural evolution of sol-gel-derived phosphosilicate gel with heat treatment

  • Y. S. Kim
  • R. E. Tressler


The microstructure of phosphosilicate gel prepared by a sol-gel process was investigated as a function of the heat-treatment temperature. Crystalline phases, Si3(PO4)4 and SiP2O7, were identified in the heat-treated phosphosilicate gel containing 56 mol% P2O5. It was found from the Fourier transform infrared spectra that phosphorus enters into the copolymer structure at ∼ 600 °C. The specific surface area of the gel increased with the heat-treatment temperature. An increase of the density of open pores with the heat-treatment temperature was observed in the secondary electron micrographs.


Polymer Microstructure Fourier Phosphorus Fourier Transform 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • Y. S. Kim
    • 1
  • R. E. Tressler
    • 1
  1. 1.Department of Materials Science and EngineeringThe Pennsylvania State UniversityUniversity ParkUSA

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