Abstract: The polypyrrole/attapulgite nanocomposites（PPy/ATP） were fabricated via in chemistry oxidation polymerization of pyrrole（Py）monomer，using sodium dodecylsulphonate and FeCl3·6H2O as dopant and the oxidant，respectively. The as-prepared nanocomposites were characterized by XRD，TG-DTA，FTIR and TEM. With increasing the dosage of Py，the volume resistivity of the nanocomposites decreases gradually. When the mass ratio of Py to ATP≥0.25 the volume resistivity of nanocomposites keeps almost change. XRD and TEM measurements of the nanocomposites revealed that the surface of attapulgite is encapsulated by the amorphous polypyrrole to form a ‘core-shell’ fibrous nanostructure，and the thickness of coating is about 2 nm. Data from TG-DTA revealed that the heat resistance of nanocomposites is higher than pure polypyrrole. According to the spectra of FTIR，it is inferred that the physical interaction exist between polypyrrole and attapulgite.

摘要： 以十二烷基磺酸钠为掺杂剂，FeCl3·6H2O为氧化剂，引发吡咯单体（Py）发生化学氧化聚合，制备出聚吡咯/凹凸棒土纳米复合材料（PPy/ATP），并通过XRD、TG-DTA、FTIR和TEM等技术手段对所得的复合材料进行了表征。体积电阻率测量表明，随着Py用量的增大，纳米复合材料的体积电阻率逐渐变小，当Py/ATP的质量比≥0.25时体积电阻率变化不大。XRD和TEM显示，聚吡咯以非晶态形式包覆在凹凸棒土单晶的表面，形成核-壳棒状纳米结构，包覆层厚度约为2 nm。TG-DTA表明凹凸棒土纳米复合材料的耐热性能与纯聚吡咯相比明显提高。FTIR表明纳米复合材料中聚吡咯与凹凸棒土之间存在物理作用。