乙腈与水的体积比对SDBS掺杂PPY的微观形貌与导电性的影响研究  

Effect of volume ratio of acetonitrile to water on the morphology and conductive property of polypyrrole doped with SDBS

作　　者：黄真浩[1] 胡书春[1] 仇迎[1] 金佥[1] 王秋桐[1] 田馨[1] 陈海路[1] 张楠[1] 刘莉[1] 

机构地区：[1]西南交通大学材料科学与工程学院,材料先进技术教育部重点实验室,四川成都610031

出　　处：《功能材料》2011年第B11期922-926,共5页Journal of Functional Materials

基　　金：中央高校基本科研业务费专项资金资助项目(SWJTU09CX051);西南交通大学基础科研基金资助项目(2008B18);“国家大学生创新性实验计划”资助项目(101061301)

摘　　要：以FeCl3为氧化剂,SDBS为掺杂剂,乙腈和水为混合溶剂,通过化学氧化法合成了导电聚吡咯。FT-IR和XRD表征结果表明SDBS掺杂到了吡咯环上,所合成的PPY产物为非晶态结构。在此基础上,重点研究了腈水比对PPY产物的微观形貌、产量和导电性的影响。结果表明,PPY产物的微观形貌直接受腈水比的影响,可通过调控腈水比来调控PPY产物的微观形貌为絮状、颗粒状、片状等形态。在0∶10~6∶4的范围内,随着腈水比的增大,PPY的产量逐渐降低;在0∶10~2∶8的腈水比范围内,PPY的电导率随腈水比的增大而增大,在2∶8~6∶4的腈水比范围内,PPY的电导率随腈水比的增大而减小。With FeCl3 as oxidant,SDBS as dopant,water and acetonitrile mixture as solvent,conductive polypyrrole（abbr.PPY） was prepared through pyrrole＇s oxidation polymerization in ice bath.The as-prepared PPY products were characterized by FT-IR and X-ray diffraction,and the results showed that SDBS was doped in PPY＇s molecular and the obtained PPY product was amorphous structure.On this basis,the effect of the volume ratio of acetonitrile to water（abbr.VRAW） on the morphology,yield and conductivity of PPY product was further investigated,and the results indicated that PPY＇s morphology could be manipulated through changing VRAW of the reaction mixture.PPY with such morphologies as floccus,particle and flake were obtained according to its corresponding VRAW.The investigation also showed that the yield of PPY decreased with the increase of VRAW in the range of 0∶10 to 6∶4.On the other hand,the investigation also demonstrated that the conductivity of PPY increased with the increase of VRAW in the range of 0∶10 to 2∶8,and decreased with the further increase of VRAW in the scope of 2∶8 to 6∶4.

关 键 词：聚吡咯 微观形貌 产量 电导率 腈水比 

分 类 号：TB324[一般工业技术—材料科学与工程]