A model for polybutadiene coatings on porous silica

M. Hanson, B. Eray, K. Unger, A. V. Neimark, J. Schmid, K. Albert, E. Bayer

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Non-wetting viscous liquids such as oligobutadiene prefer "active" sites such as pores during the process of physisorption. Thus, polybutadiene (PBD) coatings on porous silica do not result in a homogeneous polymer film but in an inhomogeneous loading where the bulk polymer is mainly sited in the pores of the silica. An increasing polymer loading leads to increasingly filled pores instead of a thicker polymer film. We cannot exclude the possibility that most of the surface is covered at least with a thin polymer film since the chromatographic behaviour is relatively good for polypeptides, which are highly susceptible to the silanol groups of silica.

Original languageEnglish (US)
Pages (from-to)403-409
Number of pages7
JournalChromatographia
Volume35
Issue number7-8
DOIs
StatePublished - Apr 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Organic Chemistry

Keywords

  • Column liquid chromatography
  • Polybutadiene coating
  • Polymer coatings
  • Reversed phase packings

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