钟文斌,熊昌伦.自组装合成超疏水聚苯胺片状多级结构[J].湖南大学学报:自然科学版,2017,44(12):69~73
自组装合成超疏水聚苯胺片状多级结构
Self-assembled Synthesis of Super-hydrophobic Polyaniline with Hierarchical Structure
  
DOI:
中文关键词:  聚苯胺  超疏水  自组装  多级结构
英文关键词:polyaniline  super-hydrophobic  self-assembled  hierarchical structure
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作者单位
钟文斌,熊昌伦 (湖南大学 材料科学与工程学院湖南 长沙 410082) 
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中文摘要:
      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0.022 mol/L时,合成的PANI为长几十微米宽大约为2~5 μm的片状结构,该片状结构表面由长大约1 μm直径约为100 nm的PANI纤维组成;而Ani浓度为0.044 mol/L时,合成的PANI长为20 μm左右宽大约为2~3 μm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.
英文摘要:
      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 2~5 μm in width,in which the surface of sheet structure was composed of PANI fiber (about 1 μm in length with a diameter ca.100 nm).When [ANI]= 0.044 mol/L,the synthesized PANI was a sheet structure of about 20 μm in length and 2~3 μm 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.
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