Abstract: Polyaniline doped with HCl, NH₂SO₃H and DBSA were synthesized. The effect of content of acid and oxidant( APS), reaction time and temperature on conductivity of PANI were discussed. The tablet resistance and thermal stability of these polyanilines were compared. It was found that the conductivity of HCl-PANI was 1. 98 S·cm^-1 when the content of HCI was 0. 5  mol·L^-1, reaction time 6h, molar ratio of APS/An was 1. 0: The conductivity of NH₂SO₃H-PANI was 0.26 S·cm^-1 when the content of NH₂SO₃H was 1.0  mol·L^-1, reaction time 6 h, molar ratio of APS/An was 2.0; The conductivity of DBSA -PANI was 0.98 S·cm^-1 when the content  of DBSA was 1. 0 mol·L^-1, reaction time 8h, molar ratio of APS/An was2. 0. The solid tablet resistance of HCl-PANI was 10 Ω min. the resistance of NH₂SO₃H-PANI was 120 Ω max. The thermal stability of NH₂SO₃H-PANI and DBSA-PANI were better than HCI -PANI.

Key words: polyaniline, acid doping, conductivity, resistance, thermal stability

摘要：  成了盐酸(HCl)、氨基磺酸(NH₂SO₃H)、十二烷基苯磺酸(DBSA)掺杂的聚苯胺(PANI)，探讨了酸用量、氧化剂用量、反应时间以及反应温度等因素对产物电导率的影响，并对这3种酸掺杂的聚苯胺的压片电阻和热稳定性进行了比较。结果表明:当c(HCl)=0.5mol·L^-1，反应时间为6h，n(APS)∶n(An)为1.0，在1°C左右下所得HCl掺杂的PANI的电导率为1.98 S·cm^-1;当c(NH₂SO₃H)=1.0 mol·L^-1，反应时间为6 h，n(APS)∶n(An)为2.0，在2°C左右下所得NH₂SO₃H掺杂的PANI的电导率为0.26S·cm^-1;当c(DBSA)=1.0mol·L^-1，反应时间为8h，n(APS)∶n(An)为2.0，在2°C左右下所得DBSA掺杂的PANI的电导率为0.98S·cm^-1。对于产物的固体压片电阻，HC1掺杂PANI最小为10Ω，NNH₂SO₃H掺杂PANI最大为120 Ω。而对于产物的热稳定性，NH₂SO₃H和DBSA掺杂的PANI具有较好的环境稳定性，要好于HC1掺杂的PANI。

关键词: 聚苯胺, 酸掺杂, 电导率, 电阻, 热稳定性