Du Xusheng, Liu Hong-Yuan, Cai Guipeng, Mai Yiu-Wing, Baji Avinash
Centre for Advanced Materials Technology (CAMT), School of Aerospace Mechanical and Mechatronic Engineering, J07 University of Sydney, Sydney, NSW 2006, Australia.
Nanoscale Res Lett. 2012 Feb 8;7(1):111. doi: 10.1186/1556-276X-7-111.
A facile approach to functionalize carbon nanofibers [CNFs] with nanostructured polyaniline was developed via in situ mechanochemical polymerization of polyaniline in the presence of chemically treated CNFs. The nanostructured polyaniline grafting on the CNF was mainly in a form of branched nanofibers as well as rough nanolayers. The good dispersibility and processability of the hybrid nanocomposite could be attributed to its overall nanostructure which enhanced its accessibility to the electrolyte. The mechanochemical oxidation polymerization was believed to be related to the strong Lewis acid characteristic of FeCl3 and the Lewis base characteristic of aniline. The growth mechanism of the hierarchical structured nanofibers was also discussed. After functionalization with the nanostructured polyaniline, the hybrid polyaniline/CNF composite showed an enhanced specific capacitance, which might be related to its hierarchical nanostructure and the interaction between the aromatic polyaniline molecules and the CNFs.
通过在化学处理的碳纳米纤维（CNFs）存在下进行聚苯胺的原位机械化学聚合，开发了一种用纳米结构聚苯胺对碳纳米纤维进行功能化的简便方法。接枝在碳纳米纤维上的纳米结构聚苯胺主要呈分支纳米纤维以及粗糙纳米层的形式。杂化纳米复合材料良好的分散性和可加工性可归因于其整体纳米结构，该结构增强了其对电解质的可及性。机械化学氧化聚合被认为与FeCl3的强路易斯酸特性和苯胺的路易斯碱特性有关。还讨论了分级结构纳米纤维的生长机制。在用纳米结构聚苯胺功能化后，杂化聚苯胺/碳纳米纤维复合材料表现出增强的比电容，这可能与其分级纳米结构以及芳族聚苯胺分子与碳纳米纤维之间的相互作用有关。
