【摘要】 采用无模板-化学氧化聚合法,在全氟辛酸(PFOA)的水溶液中以过硫酸铵(APS)为氧化剂聚合苯胺(Ani)自组装合成超疏水聚苯胺(PANI)片状多级结构.利用SEM,FT-IR,XRD和UV-vis对其形貌和结构进行了表征.当PFOA浓度为0.002 4 mol/L,聚合温度为25℃时,氧化剂APS的量与苯胺相同;Ani浓度为0.022mol/L时,合成的PANI为长几十微米宽大约为2~5μm的片状结构,该片状结构表面由长大约1μm直径约为100nm的PANI纤维组成;而Ani浓度为0.044mol/L时,合成的PANI长为20μm左右宽大约为2~3μm的片状结构,该片表面布满短而粗的不规整纤维,并且发现它们的水接触角分别为149°和151°,表明该材料具有超疏水性能.更多还原

【Abstract】 In this paper,super-hydrophobic polyaniline with hierarchical structure has been synthesized via a"soft template chemical oxidation"method with aniline as monomer,ammonium persulfate as oxidant in the solution of perfluorocaprylic acid(PFOA).The morphologies and structures of the polyaniline were further proved by SEM,FT-IR,XRD and UV-vis.When[PFOA]= 0.002 4 mol/L,[ANI]= 0.022 mol/L,T = 25 ℃,[APS]= [ANI],the synthesized PANI was a sheet structure about tens of micrometers in length and 2~5μm in width,in which the surface of sheet structure was composed of PANI fiber(about 1μm in length with a diameter ca.100 nm).When[ANI]= 0.044 mol/L,the synthesized PANI was a sheet structure of about 20μm in length and 2~3μm in width,in which the surface was covered with short thick irregular fibers.The water contact angles of both structures were 149° and 151°,respectively.These results demonstrate that the as-prepared PANIs exhibit excellent hydrophobic properties.更多还原