Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5203818 | Polymer Degradation and Stability | 2009 | 5 Pages |
Abstract
Ag-doped polyaniline (PANI) nanoparticles are prepared via doping-dedoping-redoping with the thiol group in mercaptosuccinic acid (MSA) providing the linkage between PANI molecules and Ag atoms. Ag-MSA-doped PANI maintains the electrical conductivity well above the room-temperature value of 3.0 S/cm up to 220 °C, reaching its maximum (9.0 S/cm) at 180 °C. In addition, Ag-MSA-doped PANI nanoparticles show remarkable stability against repeated thermal aging at 120 °C. The room-temperature conductivity, in fact, increases by a factor of â¼3 after 3 cycles of thermal aging. The enhanced stability against repeated thermal aging is attributed to the formation of uniformly distributed Ag nanoparticles within the PANI particles upon heating.
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Authors
Soo Yeon Sim, Ye Jin Gu, Hee Joon Ahn, Chong Seung Yoon, Seung Soon Im,