Journal
PLASMA PROCESSES AND POLYMERS
Volume 4, Issue -, Pages S1041-S1045Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200732402
Keywords
adhesion; modification; optical emission spectroscopy (OES); plasma jet; polymer treatments; surface modification
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Polyethylene (PE) samples were activated by an atmospheric pressure plasma jet. The improvement in adhesive bond strength is attributed to the incorporation of oxygen-containing functional groups into the PE surface. Optical emission spectroscopy in combination with XPS analysis shows differences in the surface reactions for a plasma jet operated with air or pure nitrogen. The results indicate that the surface modifications take place in two different environments with respect to location and time: (a) reactions while the substrate is hit by the plasma jet, and (b) reactions outside the plasma jet after the treatment.
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