聚苯胺／蒙脱石纳米复合材料的实验制备研究

对聚苯胺 /蒙脱石纳米复合材料的制备方法与制备产物进行了研究。将新疆某地蒙脱石在钠化改型后进行了季铵盐改性处理。以苯胺作为客体物质 ,利用季铵盐 /蒙脱石插层复合物与有机物良好的相容性 ,将季铵盐 /蒙脱石插层复合物分散在苯胺单体中后 ,苯胺单体进入了蒙脱石层间域 ,通过原位聚合法制备了聚苯胺 /蒙脱石纳米复合材料。XRD、SEM、TG_DTA分析结果表明 ,苯胺单体的进入使蒙脱石的层间距大大增加 ,经聚合后聚苯胺 /蒙脱石复合物中蒙脱石及其插层复合物的X射线衍射特征、形态特征和热学性质特征完全消失 ,表明蒙脱石晶层已被剥离分散在聚苯胺中形成聚苯胺 /蒙脱石纳米复合材料。

The synthesis of polyaniline/montmorillonite nanocomposite materials

The synthesis and the product of polyaniline / montmorillonite nanocomposite materials were studied. The montmorillonite was modified by quaternary ammonium salt after the exchange of its interlayer cations with Na~ . With the affinity between the quaternary_ammonium_cation/montmorillonite and the organic compounds, the aniline monomer as the guest substance was inserted in the interlayer of montmorillonite. And then the polyaniline/montmorillonite nanocomposite materials were synthesized by using the technique of in_situ polymerization. The results of XRD, SEM, TG_DTA show that the inserting of the aniline monomer can remarkably enlarge the interlayer space of montmorillonite, and the polyaniline/montmorillonite nanocomposite materials completely lose the X_ray diffraction, morphological and thermal properties of montmorillonite and the quaternary_ammonium_cation/montmorillonite. It is also shown that montmorillonite layers have been peeled off and dispersed into polyaniline and the polyaniline/montmorillonite nanocomposite materials have been synthesized.