高氯酸掺杂原位沉积聚苯胺薄膜的制备及性能研究  

The Preparation of In-situ Polymerized PANI Films Doped with HClO_4 and Its Characteristics

作　　者：范海军[1] 宫超坤[1] 张如根[1] 魏琦[1] 陶雪钰[1] 吴其晔[1] 

机构地区：[1]青岛科技大学高分子学院教育部橡塑工程重点实验室,山东青岛266042

出　　处：《塑料科技》2007年第7期40-45,共6页Plastics Science and Technology

基　　金：国家自然科学基金(50390090)

摘　　要：以高氯酸为介质酸,PVA为空间稳定剂,采用分散聚合方法,在玻璃表面原位沉积制得光滑半透明聚苯胺薄腰。研究了分散体系的反应过程、薄膜的表观形貌和微观结构、膜厚的影响因素、薄膜的电导率以及热稳定性能。结果表明:构成薄膜的聚苯胺粒子呈球型或椭球型;薄膜具有三级结构特征;高氯酸不仅作为介质酸,同时作为掺杂剂;薄膜的结晶性能不佳;薄膜厚度与介质酸的浓度并非线性关系;薄膜的电导牢处于半导体水平;电导率大小与无机介质酸的酸性强弱有一定关系,与表面形貌关系更为紧密;高氯酸掺杂聚苯胺薄膜在67.3℃时开始脱掺杂,在277.2℃脱除完全。The smooth semitransparent PANI films were deposited in-situ on glass substrates by dispersion polymerization method, using HClO4 as a dopant and PVA as a stabilizer. The reaction procedure of dispersion polymerization, the appearance and microstructure of films, the influential factor to film thickness, the conductivity and the thermal stability of films were all studied. It indicates that the PANI particles constituted films are ball like or ellipsoid like; the film takes on tertiary structure; HClO4 servers as both an acid medium and a dopant; the crystallizability of the film seems poor; the relationship between film thickness and acid concentration is not in linearity; the conductivity of the film is on a level with semiconductor, whose value depend more on film appearance than acidity of acid medium; the film starts dedoping at 67.3℃ and end at 277.2℃.

关 键 词：聚苯胺薄膜 高氯酸 掺杂 分散聚合 原位沉积 

分 类 号：TM242[一般工业技术—材料科学与工程]