Polyaniline has a wide application in the field of corrosion protection
the special structure of polyaniline contribute to its poor solubility in water system
that the application of corrosion inhibitor is restricted. In this paper
we reviewed the strategy in order to improving the water solubility of polyaniline and that was be used as corrosion inhibitor. The anticorrosion mechanism of PANi was introduced and the application and preparation of binary polyaniline composite with chitosan and cellulose was reviewed.