Abstract
Self-doped polyaniline/cellulose fibers (SPANI/CF) hybrid was in situ prepared by copolymerization of aniline and metanilic acid in presence of cellulose fibers to improve its dedoping-resistant ability. The results indicated that the SPANI/CF hybrid was remarkably more resistant to dedoping by alkaline aqueous solution than the polyaniline/cellulose fibers (PANI/CF) hybrid. Self-doping did not increase the electrical conductivity of the hybrid, but increased its flame retardancy. Both the electrical conductivity and oxygen index of the SPANI/CF hybrid decreased after ammonia soaking treatment, and the color changed gradually from green to bluish violet with increase of the ammonia concentration. The original (non-dedoped) and dedoped SPANI/CF and PANI/CF hybrids were characterized by attenuated total reflection (ATR) Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) analyses, revealing the occurrence of deprotonation during ammonia soaking treatment. Compared with the PANI/CF hybrid, additional ring substitution with sulfo groups was probably responsible for the significantly better dedoping-resistant ability of the SPANI/CF hybrid.
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The authors gratefully acknowledge the National Natural Science Foundation of China (grant no. 31170552) and the Fundamental Research Funds for the Central Universities (grant no. 2572015AB04) for financial support of this work.
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Mao, H., Liu, X., Qian, X. et al. Preparation and dedoping-resistant effect of self-doped polyaniline/cellulose fibers (SPANI/CF) hybrid. Cellulose 22, 2641–2650 (2015). https://doi.org/10.1007/s10570-015-0689-9
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DOI: https://doi.org/10.1007/s10570-015-0689-9