Positive Ion mass spectrometry during an atmospheric pressure plasma treatment of polymers

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A low power atmospheric pressure helium plasma torch was used to modify the surface chemistry of poly(α-methylstyrene), polystyrene, poly(propylene) and polyethylene. Mass spectra of the positive ions present in the plasma during the treatment revealed dominant -ions with structures that reflected the structure of the polymer, e.g. C6H5CnH 2n containing a phenyl group in the aromatic polymers and hydrocarbon structures CnH2n±1 up to n = 14 for poly(propylene). Ions up to m/z 300 were detected. X-ray photoelectron spectroscopy showed that this treatment introduced oxygen-containing functional groups into the surface of the polymers.

Bibliographical metadata

Original languageEnglish
Pages (from-to)521-529
Number of pages9
JournalPlasma Processes and Polymers
Issue number8
Publication statusPublished - 15 Aug 2009