SELECTIVE GRAFTING OF AM INE GROUPS ON POLYETHYLENE BY MEANS OF MODULATED RF NH_3 PLASMAS

摘要

Plasma treatments in power modulated NH_3 RF glow discharges have been performed for modifying the surface of polyethylene (PE). Time Resolved Optical Emission Spectroscopy (TR-OES) has been utilized for monitoring the emission of active species during the modulation period of the discharge, Electron Spectroscopy for Chemical Analysis (ESCA) has been used for studying the surface composition of PE before and after the derivatization of plasma-grafted -NH_2 groups. We present our preliminary results here, which show how modulated NH_3 plasmas can effectively improve the grafting selectivity of-NH_2 respect to all other N-containing groups.