水性聚苯胺的合成及其在食品安全监测标签中的应用

Synthesis of water-borne polyaniline and its application in food safety monitor

在水溶液体系中合成可以均匀成膜的水性聚苯胺,并利用其微尺度薄膜制备了一种基于掺杂指示界面的时间-温度指示器(TTI)。对所制成水性聚苯胺薄膜的均匀性、指示界面的肉眼分辨程度、时间和温度的依赖性等方面进行了研究。结果表明,采用此水性聚苯胺溶液可以制备均匀的涂层,其掺杂界面具有很高的肉眼分辨性,同时TTI具有很好的时间和温度响应性,可以用于食品或药品安全监测中。

A water-borne polyaniline was synthesized in aqueous solution and can be formed homogenously in micro-scale film that can be used as a new type of time-temperature Indicator（TTI）based on a doping front migration.The conductance,the resolution of doping front,and time and temperature dependence of doping front migration in micro-scale water-borne polyaniline film were studied.The results showed that the micro-scale water-borne polyaniline film was in homogenous.The doping front can be recognized by naked eyes.Moreover,the doping front migration of TTI had time and temperature dependence and can be used as a monitor for food or drug safety.