聚苯胺的制备及其导电性能

Study on the Preparation Technology of Polyaniline

以苯胺为单体,过硫酸铵为氧化剂,盐酸为掺杂酸,采用化学氧化法制备出盐酸掺杂聚苯胺(PANI-HA),研究了过硫酸铵与苯胺单体摩尔比(n APS:n An)、HCl浓度、反应温度和反应时间对PANI-HA电导率的影响;采用正交分析法研究了各影响因素对PANI-HA电导率的主次关系。结果表明:影响PANI-HA电导率的主次关系为反应温度>n APS:n An>反应时间>HCl浓度;制备PANI-HA的最佳工艺为nAPS:n An=1.0,HCl浓度1.0 mol/L,反应温度10℃,反应时间8 h。

Using aniline （An） as monomer, ammonium persulfate （APS） as oxidant, and hydrochloric acid （HCI） as doping acid, polyaniline doped with hydrochloric acid （PANI-HA） was prepared through chemical oxidation polymerization. The effect of the molar ratio of APS and An（nAPs：nAn）, the concentration of HC1, the reaction time and the reaction temperature on conductivity of PANI were studied. The primary and secondary relation of the factors affectin the conductivity of PANI-HA were analyzed by orthogonal analysis method.The results showed the order of influence on conductivity of PANI-HA was the reaction temperature〉nAPS： nA,〉the reaction time〉the concentration of HC1. The optimal polymerization condition was nAPsnAn=l.0, the concentration of HC1 1.0 mol/L, the reaction temperature 10 ℃ and the reaction time 8 h.