Introduction of sulfate groups on poly(ethylene) surfaces by argon plasma immobilization of sodium alkyl sulfates

J.P. Lens, J.P. Lens, J.G.A. Terlingen, J.G.A. Terlingen, G.H.M. Engbers, Jan Feijen

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Abstract

Sulfate groups were introduced at the surface of poly(ethylene) (PE) samples. This was accomplished by immobilizing a precoated layer of either sodium 10-undecene sulfate (S11(:)) or sodium dodecane sulfate (SDS) on the polymeric surface by means of an argon plasma treatment. For this purpose, S11(:) was synthesized by sulfating 10-undecene-1-ol using the pyridine-SO3 complex. The presence of sulfate groups at the polymeric surfaces was confirmed by X-ray Photoelectron Spectroscopy (XPS). The presence of an unsaturated bond in the alkyl chain of the surfactant improved the efficiency of the immobilization process. About 25% of the initial amount of sulfate groups in the precoated S11(:) layer was retained at the PE surface compared to only 6% for SDS. The maximum surface density of sulfate groups on the resulting samples was one group per 45 and 127 Å2 respectively.
Original languageUndefined
Pages (from-to)3437-3444
Number of pages7
JournalPolymer
Volume39
Issue number15
DOIs
Publication statusPublished - 1998

Keywords

  • METIS-105653
  • IR-73670
  • sulfation
  • Surface modification
  • argon plasma treatment

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