基于静电相互作用,从苯胺单体出发原位聚合、现场掺杂、层-层自组装制备多层聚苯乙烯磺酸钠(PSS)/聚苯胺(PANI)复合膜.为了明确控制PSS/PANI复合膜纳米结构的因素,以紫外-可见(UV-Vis)光谱跟踪PSS/PANI复合膜的成膜过程,系统地研究了基片性质、氧化剂用量及沉积时间等溶液因素对单个双层复合膜纳米结构的影响,得到了制备单个双层复合膜的较优条件.在此基础上变换苯胺单体浓度,制备了不同纳米结构的多层复合膜(PSS/PANI)n,并用原子力显微镜(AFM)、扫描电镜(SEM)及椭偏仪等对该多层复合薄膜的形貌结构进行了表征.结果表明,通过控制沉积条件,每双层复合膜的厚度可控制在40～100 nm,电导率可达2.675mS·cm-1,并且可制备增长均匀的8个双层的(PSS/PANI)8复合膜.热失重分析(TGA)表明,(PSS/PANI)n多层复合膜的热稳定性优于普通PSS/PANI复合膜.
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