期刊
IEEE TRANSACTIONS ON NANOTECHNOLOGY
卷 13, 期 4, 页码 835-841出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNANO.2014.2323419
关键词
Electrical conductivity; functionalized multiwalled carbon nanotube (FWMCNT); morphology; nanocomposite; polyaniline; seebeck coefficient; thermal conductivity; thermoelectric material
Nanocomposites consisting of functionalized multiwalled carbon nanotubes and polyaniline (PANI) were prepared by traditional in-situ polymerization and dynamic interfacial polymerization methods. Morphological and structural analysis showed that synthesis by interfacial polymerization resulted in a well-ordered composite with a uniform core-shell structure, while traditional in-situ dynamic polymerization resulted in composites having a thick core shell structure with many protrusions. Composites synthesized by interfacial polymerization showed better electrical conductivity and seebeck coefficient as compared to composites synthesized by traditional in-situ polymerization. The highly extended and well-aligned PANI chain structure increased the effective degree of electron delocalization between pi bonds in aromatic rings of PANI and graphitic structure of nanotubes and, therefore, enhanced the carrier mobility in PANI. However, there was no corresponding increase in the thermal conductivity of the composite, which was due to phonon scattering effect of nanointerfaces. Thus, the introduction of a large number of nanointerfaces, which scatter phonons very effectively, leads to the development of nanostructured composites with enhanced power factor making it suitable for thermoelectric applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据