Chromatographia

, Volume 53, Issue 11–12, pp 661–664 | Cite as

Thermal immobilization of poly(methyloctylsiloxane) in the pores of chromatographic silica

  • K. E. Collins
  • A. L. A. Sá
  • C. B. G. Bottoli
  • C. H. Collins
Originals Column Liquid Chromatography

Summary

Poly(methyloctylsiloxane), PMOS, can be thermally immobilized in porous silica particles at temperatures of 80 to 150°C to produce monolayer stationary phases and efficient reversed phase columns. Thermal immobilization at higher temperatures (180–280°C) produces thicker (“bi-layer”) stationary phases with much lower HPLC efficiencies — in marked contrast to the efficient “bi-layer” stationary phases previously obtained by gamma-radiation immobilization of PMOS.

Key Words

Column liquid chromatography Silica Immobilization Adsorption Poly(methyloctylsiloxane) 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 2001

Authors and Affiliations

  • K. E. Collins
    • 1
  • A. L. A. Sá
    • 1
  • C. B. G. Bottoli
    • 1
  • C. H. Collins
    • 1
  1. 1.Instituto de QuímicaUniversidade Estadual de CampinasCampinasBrazil

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