采用化学氧化聚合法分别在磺基水杨酸和盐酸中合成了聚苯胺,并用FT-IR和TG-DTA技术对聚苯胺掺杂前后的结构变化和热稳定性进行了分析.研究了不同质子酸掺杂对聚苯胺气敏性能的影响,结果表明,磺基水杨酸掺杂的聚苯胺不仅比普通盐酸掺杂的聚苯胺具有更好的环境稳定性,而且对目标气体具有更好的灵敏性,在室温下对10-3 L/L NH3的灵敏度达到了15.47.
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