采用化学氧化聚合方法、以不同摩尔比的苯胺与邻甲苯胺共聚,将疏水性基团-CH3引入聚苯胺分子中,制备了一系列具有微/纳米结构的苯胺/邻甲苯胺共聚物.采用红外光谱、紫外-可见吸收光谱、循环伏安曲线测量、X射线衍射等分析手段表征了苯胺/邻甲苯胺共聚物微/纳米结构,并通过扫描电镜(SEM)对其形貌进行了分析.与聚苯胺和聚邻甲苯胺均聚物进行对比,通过Tafel极化曲线和电化学阻抗谱测定了不同摩尔比的苯胺/邻甲苯胺共聚物在0.1 mol/L H2SO4溶液中的腐蚀行为,测试了不同涂层的水接触角.结果表明,-CH3的引入增大了涂层的水接触角,使苯胺/邻甲苯胺共聚物的防腐蚀性能优于聚苯胺.当苯胺、邻甲苯胺按1∶1摩尔比共聚时,得到的苯胺/邻甲苯胺共聚物有一定的结晶性,对水的接触角最大(为65°),且防腐性能最佳,防腐蚀效率达91.1％.
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