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Flame-retardant effect of polyaniline coating deposited on cellulose fibers

Authors

  • Jaroslav Stejskal,

    Corresponding author
    1. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
    • Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
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  • Miroslava Trchová,

    1. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
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  • Irina Sapurina

    1. Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
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Abstract

Filtration paper was coated with a thin polyaniline film. The content of conducting polymer was 8.2 and 6.3 wt % for polyaniline hydrochloride and polyaniline base, respectively. After burning, the coated material retains the original fibrilar morphology of cellulose. The polyaniline coating converts to solid carbonaceous products. The resulting structure prevents the formation of gaseous carbon oxides by restricting the access of oxygen to cellulose. While the ash from the uncoated paper after burning is 0.005 wt %, the microtubular residue of polyaniline-coated paper is 16–24 wt % of the original mass. The flame-retardant performance of polyaniline and poly(1,4-phenylenediamine) coatings was comparable both for the protonated forms and the corresponding bases. The conversion of polyaniline-coated cellulose fibers to solid pyrolytic products was characterized by FTIR and Raman spectroscopies. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2347–2354, 2005

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