Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 28, Issue 23, Pages 2230-2236Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200700468
Keywords
ammonia gas; conductive and superhydrophobic fabric; polyaniline; reversible wettability; solid-state structure; structure-property relations
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A superhydrophobic polyaniline (PANI)-coated fabric was prepared by in-situ doping polymerization in the presence of perfluorosebacic acid (PFSEA) as the dopant. It is found that the PANI-coated fabric undergoes a change in wettability from superhydrophobic (doped state) to superhydrophilic (de-doped state) when it is exposed to ammonia gas. In particular, a reversible wettability of the PANI-fabric is observed when it is doped with PFSEA and de-doped with ammonium gas. It is proposed that the coordination effect of the pore structure of the polyester fabric, low surface energy of the PFSEA dopant, and reversible doping/dedoping characteristics of PANI results in the reversible wettability of the PANI-coated fabric from superhydrophobicity to superhydrophilicity. Moreover, the tactic used here may provide a new method to C monitor the toxic gas.
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