Investigation of ageing effects on the electrical properties of polyaniline/silver nanocomposites |
| |
| Authors: | Asma Binat Afzal and Muhammad Javed Akhtar |
| |
| Affiliation: | Physics Division, PINSTECH, P.O. Nilore, Islamabad 45650, Pakistan; Department of Chemical and Material Engineering, PIEAS, Islamabad 45650, Pakistan |
| |
| Abstract: | Polyaniline(PANI)/Ag nanocomposites, synthesized by incorporation of separately prepared silver nanoparticles in 1-methyl-2-pyrrolidinone(NMP) solution of PANI, have been aged at the accelerated temperature of 120 oC to simulate a storage period of 2 years at 25 oC. The accelerated ageing of these materials is done by using the activation energy calculated from data collected using heat flow calorimetry (HFC). The impedance spectroscopic studies of NMP plasticized aged nanocomposite films suggest a microphase separation into reduced and oxidized repeat units. There is crosslinking of the PANI films during ageing thereby obstructing the charge transfer between PANI chains and silver nanoparticles. As a result, the resistivity is increased. |
| |
| Keywords: | polyaniline Ag nanoparticles impedance spectroscopy ageing |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
