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- 2015
纳米Fe3O4/聚吡咯复合材料的形貌可控制备及电磁特性
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Abstract:
为实现纳米Fe3O4/聚吡咯(PPy)复合材料的形貌可控合成,以十二烷基苯磺酸钠(NaDBS)为表面活性剂, 运用乳液聚合方法制备了纳米Fe3O4/PPy复合材料。研究了体系中油相吡咯及表面活性剂用量对纳米Fe3O4/PPy复合材料表面形貌的影响规律, 分析了纳米Fe3O4/PPy复合材料形貌与其电磁特性之间的关系。结果表明:吡咯用量的增加改变了体系中胶团的存在状态, 使得纳米Fe3O4/PPy复合材料的形貌由草莓状向核-壳结构转变;体系中胶团的数量随着表面活性剂用量的改变发生变化, 根据此规律调控了核-壳复合粒子内核的数量, 从而得到了单核或多核的纳米Fe3O4/PPy复合材料。 To achieve the morphology-controllable synthesis of nano Fe3O4/polypyrrole(PPy) composites,nano Fe3O4/PPy composites were synthesized through emulsion polymerization method in the presence of sodium dodecyl benzene sulfonate (NaDBS) surfactant. The effects of usage of oil phase pyrrole and surfactant on surface morphology of nano Fe3O4/PPy composites were discussed. The relationship between morphology and conductive-magnetic properties of nano Fe3O4/PPy composites was analyzed.The results show that the morphology of nano Fe3O4/PPy composites can be changed from strawberry-like structure to core-shell structure through increasing the amount of pyrrole, and the amount of the micelles changes with the usage variation of the surfactant, according to which can achieve the controllable adjust of the quantity of cores to get the core-shell structure nano Fe3O4/PPy composites with single core or multiple cores. 国家自然科学基金(51272010,51472018);北京市科技新星计划(XX2013009);教育部高等学校博士学科点专项科研基金(20121102120001);教育部新世纪优秀人才支持计划(NCET-12-0035)
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