聚苯胺/镍纳米复合材料原位复合与性能表征  

In-situ Synthesis and Characterization of Polyaniline/Nickel Nanocomposites

作　　者：李鹏[1] 官建国[2] 张清杰[2] 袁润章[2] 

机构地区：[1]武汉理工大学机电工程学院,武汉430070 [2]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《武汉理工大学学报》2005年第3期5-8,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(29904005);国家"863"计划(2001AA339020).

摘　　要：采用先合成导电聚苯胺,然后用多元醇原位液相还原的方法,合成了聚苯胺/镍纳米复合材料,纳米镍的含量约为19.22%(质量分数)。具有面心立方晶体结构,生成的纳米镍“镶嵌”在聚苯胺颗粒的表面,形成了类似“草莓”状的复合颗粒,复合颗粒的热稳定性有较明显提高。复合颗粒同时具有铁磁性和导电性,复合颗粒的饱和磁化强度最高可达到10.77Am2/kg,电导率为9.86×10-3S/cm。In-situ synthesis by high temperature solution phase reducing method in polyol was carried out in the presence of polyaniline to obtain polyaniline/nickel nanocomposites with the nickel content up to 19.22%. The concentration of dodecylamine was found to affect significantly on both the sizes of nickel nanoparticles and the reducing reaction. Strawberry-like morphology of the nanocomposites was found in the transmission electron microscopy (TEM) images due to nickel nanoparticles gluing on the surface of polyaniline. The results of X-ray diffraction (XRD) showed that the nickel nanoparticles had face centered cubic (FCC) structures and the structures of polyaniline have not been affected under high temperatures. The magnetic Ni nanoparticles can improve the thermal stability of polyaniline/nickel nanocomposites due to the interaction between Ni particles and polyaniline chain. The magnetic properties and conductivity of nanocomposites depended on the Ni content and the sizes of nanoparticles. The maximum saturated magnetization (Ms) and conductivity (σ) were 10.77 Am2/kg and 9.86 × 10-3 S/cm, respectively.

关 键 词：聚苯胺 镍 原位复合 纳米复合材料 

分 类 号：O614[理学—无机化学]