Nanometer structure and conductor mechanism of polymer modified by metal ion implantation
作者:Yuguang Wu、Tonghe Zhang、Yanwen Zhang、Huixing Zhang、Xiaoji Zhang、Gu Zhou
DOI:10.1007/bf02916735
日期:2001.10
Polyethylene terephthalate (PET) has been modified by Ag, Ti, Cu and Si ion implantation with a dose ranging from I X 10(16) to 2 x 10(17) ions/cm(2) using a metal vapor vacuum arc (MEVVA) source. The electrical properties of PET have been improved by metal ion implantation. The resistivity of implanted PET decreased obviously with an increase in ion dose. The results show that the conductive behavior of a metal ion implanted sample is different from Si-implantation samples. In order to understant the mechanism of electrical conduction, the structures of implanted layer were observed in detail by XRD and TEM. The nano carbon particles were dispersed in implanted PET. The nano metallic particles were built up in metallic ion implanted layers with dose range from 1 x 10(16) to 1 x 10(17) ions/cm(2). The nanometer metal net structure was formed in implanted layer when a dose of 2 x 10(17) ions/cm(2) is reached. Anomalous fractal growths were observed. These surface structure changes revealed conducting mechanism evolution. It is believed that the change would result in an improvement of the conductive properties. The conducting mechanism will be changed with increasing metal ion dose.