Grinou Ali, Yun Young Soo, Cho Se Youn, Jin Hyoung-Joon
Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea.
J Nanosci Nanotechnol. 2011 Jul;11(7):6323-31. doi: 10.1166/jnn.2011.4428.
We demonstrate a simple method to prepare alkylated graphene/polyaniline composites (a-GR/PANI) using solution mixing of exfoliated alkyl Iodododecane treated graphene oxide sheets with polyaniline nanofiber; polyaniline nanofibers (PANI) prepared by using rapid mixing polymerization significantly improve the processibility of polyaniline and its performance in many conventional applications. Also, polyaniline nanofibers exhibit excellent water dispersibility due to their uniform nanofiber morphology. Morphological study using SEM and TEM analysis showed that the fibrous PANI in the composites a-GR/PANI mainly adsorbed onto the surface or intercalated between the graphene sheets, due especially to the good interfacial interaction between the alkylated gaphene and the polyaniline nanofibers. The existence of polyaniline nanofibers on the surface of the garphene and the alkylated graphene sheets was confirmed by using FT-IR, FT-Raman and X-ray diffraction analysis. Due to the good interfacial interaction between the alkylated graphene and the polyanilines nanofibers, the composite (a-GR/PANI) exhibited excellent dispersion stability in DMF compared to the same composite (GR/PANI) without alkylation. The electrical conductivity of the (GR/PANI) composite was 9% higher than that of pure PANI and the same weight percent for the composite after alkylation was 13% higher than that of pure PANI nanofibers.
我们展示了一种简单的方法来制备烷基化石墨烯/聚苯胺复合材料（a-GR/PANI），该方法是将经碘代十二烷处理的剥离氧化石墨烯片与聚苯胺纳米纤维进行溶液混合；通过快速混合聚合制备的聚苯胺纳米纤维（PANI）显著提高了聚苯胺的可加工性及其在许多传统应用中的性能。此外，聚苯胺纳米纤维由于其均匀的纳米纤维形态而表现出优异的水分散性。使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）分析进行的形态学研究表明，复合材料a-GR/PANI中的纤维状聚苯胺主要吸附在石墨烯片的表面或插层在石墨烯片之间，这尤其归因于烷基化石墨烯与聚苯胺纳米纤维之间良好的界面相互作用。通过傅里叶变换红外光谱（FT-IR）、傅里叶变换拉曼光谱（FT-Raman）和X射线衍射分析证实了石墨烯和烷基化石墨烯片表面存在聚苯胺纳米纤维。由于烷基化石墨烯与聚苯胺纳米纤维之间良好的界面相互作用，与未烷基化的相同复合材料（GR/PANI）相比，复合材料（a-GR/PANI）在N，N-二甲基甲酰胺（DMF）中表现出优异的分散稳定性。（GR/PANI）复合材料的电导率比纯聚苯胺高9%，烷基化后相同重量百分比的复合材料的电导率比纯聚苯胺纳米纤维高13%。
