低能离子注入聚苯胺薄膜结构性能研究  

Structure and Property of Polyaniline Film Implanted by Low Energy Ion

作　　者：封伟[1] 刘效增[1] 曹猛[1] 韦玮[1] 吴洪才[1] 

机构地区：[1]西安交通大学,西安710049

出　　处：《西安交通大学学报》2000年第2期33-36,共4页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金!资助项目 ( 1 9775 0 3 9)

摘　　要：使用N+对聚苯胺溶液流延成膜进行离子注入改性,注入剂量最高为50Zm-2,能量为10～40keV.研究发现,本征态聚苯胺薄膜的电导率随着注入能量的增加而迅速增加,但随注入剂量的增加程度较缓慢,当能量增至36keV时,电导率增加9个数量级.FTIR光谱图显示了N+注入后,使聚苯胺分子链部分CC和CH的σ键断裂,从而改善了它的导电性能.X射线衍射说明,注入离子使聚合物微观结晶性能降低,无定形趋势增大.紫外可见光Uvvis吸收表明,聚苯胺薄膜随着注入剂量的增大,在可见光区的吸收逐渐减弱,说明离子注入使其分子结构中的醌式比例大大降低。Ion beam effects on polyaniline film are studied for ion implantation with nitrogen ions (N +). Examinations were made using Fourier transform infrared spectrometer (FTIR), X ray diffraction (XRD) and Uv vis absorption. Data are obtained for temperature dependence of the surface conductivity. The energy N + is from 10 keV to 40 keV, while the dose ranged from 0 1 Em -2 to 5 0 Zm -2 . The surface conductivity of PAn film enhanced by 9 orders of magnitude when dose is about 1 0 Zm -2 and energy is 36 keV. In general, the surface conductivity of the PAn film is enhanced when energy and dose are increased. FTR spectra showed that the implanted ions made some of the CC and CH σ bonds split such that the conductance is improved. Implantation of the PAn film by ion tends to increase the non crystalinity. The proportion of quinion ring of the molecular structure decreases.

关 键 词：离子注入 聚苯胺薄膜 表面电阻率 改性 电导率 

分 类 号：TM243[一般工业技术—材料科学与工程] O633.21[电气工程—电工理论与新技术]