Study of the Free Radicals Trapped on PET Films Induced by Atmospheric Pressure Plasma Jet Treatment
SUN Jie
WU Hui
Abstract：In order to investigate the efficiency of atmospheric pressure plasma j et (APPJ)treatment on PET films in terms of inducing free radicals and subsequent grafting polymerization,Electron Spinning Spec-troscopy (ESR)technique is used in this paper to test and analyze the free radical outcomes and their aging phenomenon.The correlation between the ESR results and grafting ratio change trend for different samples is then discussed and analyzed.The results show that pure He gas APPJ is more easily to make free radi-cals generated on PET film and the free radical concentration is increased with the prolonged treatment du-ration.The stability of trapped free radicals on PET films varies obviously with different storage condi-tions.Samples with higher free radical concentration could also gain higher grafting ratio.
Keywords：atmospheric pressure plasmaPET filmfree radicalESRgrafting ratio
Publication Date：2015-07-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 88-91 )