聚苯胺
材料科学
纳米纤维
掺杂剂
化学工程
傅里叶变换红外光谱
聚苯胺纳米纤维
聚合
扫描电子显微镜
导电聚合物
苯胺
高分子化学
低聚物
成核
纳米技术
复合材料
化学
兴奋剂
聚合物
有机化学
工程类
光电子学
标识
DOI:10.1016/j.eurpolymj.2007.01.020
摘要
Polyaniline (PANI) nanofibers with interconnected network-like structures were electropolymerized on stainless steel substrates by galvanostatic electrolysis. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–visible spectroscopy (UV–vis) and Fourier transform infrared spectroscopy (FTIR). The results show that PANI and gels (mixtures of oligomer, dopant and aniline) form simultaneously during the electrochemical deposition. The gels play an important role in the formation of PANI nanofibers. The PANI formed in the early stage of polymerization is subject to secondary growth along one dimension, since the nucleation sites are suppressed by the wrapped gels. The dendritic degree of PANI nanofibers is related to dopants, and the order is as follows: PANI-H3PO4 > PANI-H2SO4 > PANI-HNO3. No nanofibers are obtained using CH3COOH as dopants due to the high solubility of PANI-CH3COOH.
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