Characterization of Conducting Polyaniline Blends by Resonance Raman Spectroscopy
José E. Pereira da Silva, Márcia L.A. Temperini and Susana I. Córdoba de Torresi*
Instituto de Química, Universidade de São Paulo, CP 26077, 05513-970 São Paulo - SP, Brazil. * e-mail: storresi@iq.usp.br
Received: November 23, 2004 ]]> Published on the web: April 6, 2005
Abstract
Raman and optical microscopy were used to investigate possible interactions between polyaniline (PANI) and different insulating polymers in conducting blends. Resonance Raman and optical micrographs were used to study the physical interaction in materials. Analysis Raman spectra was done investigating the relative intensity of bands at 574 and 607 cm-1. A relationship between Raman bands and conductivity was also proposed.
Keywords: Raman spectroscopy, optical microscopy, conducting blends, polyaniline.
Resumo
À microscopia óptica juntamente com a espectroscopia Raman no modo microscópico foram utilizadas para investigar as possíveis interações entre a polianilina (PANI) e diferentes polímeros isolantes em diversas blendas condutoras. Interações físicas podem ser inferidas através da análise das intensidades relativas das bandas em 574 e 607 cm-1. A condutividade do material e as intensidades relativas destas bandas Raman são também analisadas.
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]]>Acknowledgements
Authors are indebted to Brazilian Agencies FAPESP (Proc. No 98/15686-3), CNPq and CAPES.
References
1. Cao, Y.; Smith, P.; MacDiarmid, A. G.; Synth. Met. 1992, 48, 91. [ Links ]
2. Yang, C. Y.; Cao, Y.; Smith, P.; Heeger, A. J.; Synth. Met. 1993, 53, 293. [ Links ]
3. Jousseaume, V.; Morsli, M.; Bonnet, A.; Tesson, O.; Lefrant, S.; J. Appl. Polym. Sci. 1998; 67,1205. [ Links ]
4. Roichman, Y.; Titelman, G.I.; Silverstein, M.S.; Siegman, A.; Markis, M.; Synth Met. 1999, 98, 201. [ Links ]
5. Valenciano, G. R.; Job, A. E.; Mattoso, L. H. C.; Polymer 2000, 41, 4757. [ Links ]
6. Yang, C. Y.; Heeger, A. J.; Cao, Y.; Polymer 2000, 41, 4113. [ Links ]
7. Faez, R.; Gazzoti, W. A.; De Paoli. M. -A.; Polymer 1999, 40, 5497. [ Links ]
8. Wessling, B.; Synth. Met. 1998, 93, 143. [ Links ]
9. Anand, J.; Palaniappan, S.; Sathyanarayana, D. N.; Prog. Polym. Sci. 1998, 23, 993. [ Links ]
10. Roth, S.; Graupner, W.; Synth. Met. 1993, 57, 3623. [ Links ]
11. Tselios, C.; Bikiaris, D.; Maslis, V.; Panayiotou, C.; Polymer 1998, 39, 6807. [ Links ]
12. Ward, Y.; Mi, Y.; Polymer 1999, 40, 2465. [ Links ]
13. Chiang, J. C.; MacDiarmid, A. G.; Synth. Met. 1986, 13, 193. [ Links ]
14. Harris, D. C.; Bertolucci, M. D.; Symmetry and Spectroscopy, Dover Publications, INC: New York, 1989. [ Links ]
15. Sala, O.; Fundamentos da Espectroscopia Raman e no Infravermelho, Ed. Unesp: São Paulo, 1998. [ Links ]
16. Pereira da Silva, J. E.; de Faria, D. L. A.; de Torresi, S. I. C.; Temperini, M. L. A.; Macromolecules 2000, 33, 3077. [ Links ]
17. Rodrigue, D.; Snauwaert P.; Demaret, X; Riga, J.; Verbist, J. J.; Synth. Met. 1991, 41, 769. [ Links ]
18. Louarn, G.; Lapkowski, M.; Quillard, S.; Pron, A.; Buisson, J. P.; Lefrant, S.; J. Phys. Chem. 1996, 100, 6998. [ Links ]
19. Cochet, M.; Louarn, G.; Quillard, S.; Boyer, M. I.; Buisson, J. P.; Lefrant, S.; J. Raman Spectros. 2000, 31, 1029. [ Links ]
20. Pereira da Silva, J. E.; de Torresi, S. I. C.; Temperini, M. L. A.; J. Braz. Chem. Soc. 2000, 11, 91. [ Links ]
21. Valenciano, G. R.; Job, A. E.; Mattoso, L. H. C.; Polymer 2000, 41, 4757. [ Links ]
22. Faez, R.; De Paoli, M. -A.; Eur. Polym. J. 2001, 37, 1139. [ Links ]
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