A study on formation of needle-like polyanilines
- Authors
- Jung, Woo-Hyuk; Kim, Dong-Young; Lee, Young Moo; McCarthy, Stephen P.
- Issue Date
- Mar-2006
- Publisher
- Materials Research Society
- Citation
- Materials Research Society Symposium Proceedings, v.949, pp.68 - 73
- Indexed
- SCOPUS
- Journal Title
- Materials Research Society Symposium Proceedings
- Volume
- 949
- Start Page
- 68
- End Page
- 73
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/181674
- DOI
- 10.1557/proc-0949-c07-05
- ISSN
- 0272-9172
- Abstract
- Needle-like polyanilines (PANi) were prepared at 15°C by emulsion polymerization and their conductivities were obtained up to 3 S/cm according to the addition rate of ammonium peroxysulfate (APS) aqueous solutions with reaction conditions of 0.4 to 0.5 APS/aniline ratios and 0.4 to 0.5 M aniline concentrations. Needle-like complexes doped with p-toluenesulfonic acid (pTSA) were prepared with the oxidant solution added so slowly as to be for 3 to 3.6 hours. The high reaction temperatures ranging from 5 to 15°C was the second condition to have needlelike anilinium complexes polymerized without their breaking during polymerization. A filler shape is one of the most important parameters influencing a percolation concentration of conductive fillers dispersed in a non-conductive matrix. Needle-like polyanilines could be potentially used as conductive fillers to show electromagnetic interference and radar absorption effects.
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