本征态聚苯胺表面修饰氧化石墨烯的制备与表征  

Preparation and Characterization of Graphene Oxide Surface Modified by Emeraldine Base Polyaniline

作　　者：许天骄 许军[1] 于水畅 王晔文 苏静 罗琪 Tianjiao;XU Jun;YU Shuichang;WANG Yewen;SU Jing;LUO Qi(College of Science,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学理学院,天津300300

出　　处：《化工技术与开发》2020年第2期18-22,共5页Technology & Development of Chemical Industry

基　　金：中国民航大学大学生创新创业市级资助项目(201910059064)。

摘　　要：采用改进的Hummers法制备了氧化石墨烯,通过苯胺的原位聚合和后续的去掺杂反应,使本征态聚苯胺修饰在氧化石墨烯表面。苯胺被吸附于氧化石墨烯表面并进行聚合反应,本征态聚苯胺大分子链通过π-π共轭效应,均匀包覆于氧化石墨烯表面,形成核(氧化石墨烯)-壳(本征态聚苯胺)纳米复合结构。氧化石墨烯的二维片层结构与本征态聚苯胺包覆层之间存在较强的相互作用,使得本征态聚苯胺在较高的温度下缓慢热分解,复合结构表现出良好的热稳定性。本征态聚苯胺包覆层产生空间位阻效应,使氧化石墨烯难以聚集并均匀稳定地分散在有机溶剂中。Graphene oxide was prepared by modified Hummers method.Emeraldine base polyaniline was functionalized on the surface graphene oxide by aniline in-situ polymerization and followed by de-doping reaction.Aniline was adsorbed and polymerized on the surfaces of graphene oxide,macromolecules chains of emeraldine base polyaniline was homogeneously coated on graphene oxide viaπ-πconjugated interaction forming a core(graphene oxide)-shell(emeraldine base polyaniline)nano-composite structure.Owing to strong interaction between two dimensional nano-sheets of graphene oxide and emeraldine base polyaniline coatings,emeraldine base polyaniline in the composite thermal decomposed slowly at higher temperature,and the composite exhibited good thermal stability.Emeraldine base polyaniline coatings provided steric hindrance effects,graphene oxide was difficult to aggregate and was homogeneously dispersed in organic solvents.

关 键 词：氧化石墨烯 本征态聚苯胺 表面修饰 制备 结构和性能 

分 类 号：O613.7[理学—无机化学]