Surface modification of polyethylene films via bromination: Reactions of brominated polyethylene with aromatic thiolate compounds

N. Chanunpanich, A. Ulman, A. Malagon, Y. M. Strzhemechny, S. A. Schwarz, A. Janke, T. Kratzmueller, H. G. Braun

Research output: Contribution to journalArticlepeer-review

Abstract

Polyethylene-bromine (PE-Br) was modified by nucleophilic substitution reactions with aromatic thiolate compounds. The amount of replacement was examined in terms of S/C mole ratio using X-ray photoelectron spectroscopy. The stronger the electron donating in the substituent group on thiolate anion, the higher the amount of substitution reaction at the PE-Br surface. The S/C ratio is the largest for PE-S-Ph-NH2 due to the enhancing nucleophilicity of thiolate anion by the amino group. The ratio in PE-S-Ph-COOH is the smallest because of the electron-withdrawing character of the COOH group. However, the film revealed an improvement in wettability, due to high hydrophilicity.

Original languageEnglish (US)
Pages (from-to)3557-3560
Number of pages4
JournalLangmuir
Volume16
Issue number7
DOIs
StatePublished - Apr 4 2000

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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