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Enhanced electrical conductivity of Ag-mercaptosuccinic acid-redoped polyaniline nanoparticles during thermal cycling above 200 degrees C
- Issue Date
- Feb-2009
- Publisher
- Elsevier BV
- Keywords
- Conducting polymer; Nanoparticles; High-temperature materials; Thiol Reaction; Doping-dedoping-redoping
- Citation
- Polymer Degradation and Stability, v.94, no.2, pp 208 - 212
- Pages
- 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- Polymer Degradation and Stability
- Volume
- 94
- Number
- 2
- Start Page
- 208
- End Page
- 212
- ISSN
- 0141-3910
1873-2321
- 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 degrees C, reaching its maximum (9.0 S/cm) at 180 degrees C. In addition, Ag-MSA-doped PANI nanoparticles show remarkable stability against repeated thermal aging at 120 degrees C. The room-temperature conductivity, in fact, increases by a factor of similar to 3 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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Related Researcher
- Yoon, Chong Seung
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)