Preparation and Characterization of PAni-PMMA Dispersions

Blends of polyaniline (PAni) and poly(methyl methacrylate) (PMMA) have been produced using core-shell particle synthesis, which is advantageous because it allows changing surface-related properties of PMMA with relatively small amounts of PAni and without the use of organic solvents. Scanning electr...

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Bibliographic Details
Published in:Journal of dispersion science and technology 2005-05, Vol.26 (3), p.267-273
Main Authors: de Medeiros, D. W. O., Neto, C. G. da Trindade, dos Santos, D. E. S., Pavinatto, F. J., dos Santos, D. S., Oliveira, O. N., Job, A. E., Giacometti, J. A., Dantas, T. N. C., Pereira, M. R., Fonseca, J. L. C.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
core-shell particles
Exact sciences and technology
General and physical chemistry
poly(methyl methacrylate)
Polyaniline
zeta potential
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Summary:Blends of polyaniline (PAni) and poly(methyl methacrylate) (PMMA) have been produced using core-shell particle synthesis, which is advantageous because it allows changing surface-related properties of PMMA with relatively small amounts of PAni and without the use of organic solvents. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) measurements indicated that the deposition of polyaniline seems to alter the regular shape of the primary acrylic latex particles. The coverage of PMMA particles by PAni was confirmed by FTIR measurements, where distinct data were obtained from the transmission and diffuse reflectance modes, since the latter is surface sensitive. The zeta potential, which is also a surface-related property, increased with the contents of PAni, as the shells probably became protonated with PAni in the emeraldine salt form. Coverage with PAni did not affect the thermal bulk properties of the PMMA shells.
ISSN:0193-2691
1532-2351
DOI:10.1081/DIS-200049560