分散剂类型对聚苯胺粒径分布和电化学特性的影响  

Effect of Types of Dispersant on Particle Size Distribution and Electrochemical Properties of Polyaniline

作　　者：王文军[1] 黄惠[1] 郭忠诚[1,2] 李纪[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]昆明理工恒达科技有限公司,昆明650106

出　　处：《功能高分子学报》2012年第4期429-433,共5页Journal of Functional Polymers

基　　金：国家自然科学基金面上项目(50974065)

摘　　要：采用化学氧化聚合法以苯胺为单体、过硫酸铵为氧化剂,在不同分散剂体系中合成聚苯胺,考察分散剂对聚苯胺性能的影响。通过激光粒度仪、傅里叶红外吸收光谱、四探针电阻仪和电化学工作站等测试手段研究聚苯胺的结构、导电性、粒径分布及电化学性能。结果表明:分散剂能降低聚苯胺的粒径分布,提高聚苯胺的导电性和电化学稳定性;当分散剂聚乙二醇占苯胺单体质量的20%时,聚苯胺的平均粒径为3.85μm,导电率为4.68S/cm,极化电位为0.73V。Polyaniline were synthesized in various dispersant systems by chemical oxidative polymeri- zation, using aniline as monomer and ammonium persulfate as oxidant. Its structure, conductivity, particle size distribution and electrochemical properties were measured by laser particle size analyzer, Fourier- transform infrared spectrum, four-point probe resistance instrument and electrochemical workstation. Results show that all dispersants can reduce its particle size distribution and improve its conductivity and electrochemical stability. In the condition of polyethylene glycol-400 as dispersant and the mass content of 20% in aniline monomer, average particle size of the synthesized polyaniline is 3.85 μm, its electrical con- ductivity is 4.68 S/cm and polarization potential is 0.73 V.

关 键 词：聚苯胺 分散剂 粒径 电化学性能 

分 类 号：TQ31[化学工程—高聚物工业]