Treatment of PET nonwoven with a water vapor or carbon dioxide plasma

A.J.A. Klomp, J.G.A. Terlingen, G.A.J. Takens, A. Strikker, G.H.M. Engbers, J. Feijen

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17 Citations (Scopus)

Abstract

Gas plasma treatment of poly(ethylene terephthalate) nonwoven (NW-PET) was used to increase the hydrophilicity of single- and multilayer NW-PET. NW-PET was treated with a pulsatile CO2 or with a pulsatile H2O glow discharge. X-ray photoelectron spectroscopy (XPS) showed significantly more oxygen with CO2 glow-discharge-treated NW-PET than with H2O glow-discharge-treated-NW-PET surfaces. Moreover, the introduction rate of oxygen at a single layer of NW-PET was higher for a CO2 than for a H2O glow-discharge treatment. Titration data revealed significantly higher surface concentrations of carboxylic groups for CO2 glow-discharge NW-PET than for H2O glow-discharge-treated NW-PET. Mass spectrometry analysis revealed that the entire internal surface of a single layer of NW-PET was modified. XPS and contact measurements confirmed the modification of the internal surface of multilayers of NW-PET. H2O and CO2 glow-discharge-treated substrates consisting of six layers of NW-PET had a nonuniform surface concentration of carboxylic acid groups as determined with titration experiments. The outside layers of the substrate contained a higher surface concentration of carboxylic acid groups than did the inside layers. XPS analysis and titration data showed that the rinsing of H2O and CO2 glow-discharge-treated NW-PET with water changed the surface composition considerably. Part of the carboxylic acid group-containing species were washed off.
Original languageEnglish
Pages (from-to)480-494
JournalJournal of applied polymer science
Volume75
Issue number4
DOIs
Publication statusPublished - 2000

Keywords

  • METIS-106558
  • IR-71630
  • chemical composition
  • treatment stability
  • Surface modification
  • PET nonwoven
  • X-ray photoelectron spectroscopy
  • Leukocyte filters
  • Gas plasma treatment

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