摘要
采用ＭＥＶＶＡ离子注入机引出的Ｃｕ 和Ｎｉ离子注入聚酯薄膜，注入后的聚酯膜极大降低了聚酯膜的电阻率。注入表面紫外线和红外线吸收特性明显地增强。用透射电子显微镜观察注入聚酯膜的横截面，ＴＥＭ观察表明，在注入层中形成了纳米金属颗粒和富集的碳颗粒。注入层的结构的变化和新相的形成引起了聚合物表面物理和化学特性的改变，进而讨论了金属离子注入聚酯膜的改性机理。
Polyethylene terephthalate (PET) has been modified by Cu and Ni ion implantation with a dose range from 1×1016 to 2×1017ions/cm2 using a metal vapor vacuum arc(MEVVA) source. The electrical properties of PET have been improved by metal ion implantation. The absorbency of infrared ray and ultraviolet radiation increased by the ion implantation. The resistivity of implanted PET decreased obviously with an increase of ion dose. In order to understand the mechanism of electrical conduction and modification of optical properties, the structures of implanted layer were observed in details by TEM. The results show that the nano carbon particles and nano metallic particles were built up in metallic ion implanted layers with dose range from 1×1016 to 2×1017ions/cm2 . The nano meter metal net structure was formed in implanted layer when the dose of 2×1017ions/cm2 was reached. These surface structure changes revealed conducting mechanism evolution. It is believed that the change would result in the improvement of the conductive properties and enhanced optical absorbency. The conducting mechanism will be changed with increasing metal ion dose.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2002年第1期96-97,100,共3页
Journal of Functional Materials
基金
国家自然科学基金资助项目(59671051)
国家863计划资助项目
关键词
金属离子注入
电阻率
纳米颗粒
导电机理
光电特性
功能材料
聚酯膜
metal ion implantation
resistivity
nano-meter particle
conducting mechanism
absorbency of infrared ray and ultraviolet radiation
