Influence of Oxidant on Electrical Properties of the Polypyrrole-Coated Cotton Fabrics

Abstract:

The polypyrrole-coated cotton fabrics were prepared via in situ chemical oxidative polymerization. The polymerization time of 120 min and reaction temperature of 25 °C were employed in this study. The major factors on electricities of the fabrics, including types of oxidants and molar ratio of pyrrole monomer to oxidant, were studied. Ferric trichloride hexahydrate (FeCl₃·6H₂O), ammonium persulfate ((NH₄)₂S₂O₈) and sodium periodate (NaIO₄) were selected to carry out the synthesis of polypyrrole. When FeCl₃·6H₂O acted as oxidant, the optimum conductivity of 4×10^-3 S·cm^-1 could be obtained by changing molar ratio of Py to FeCl₃·6H₂O. By contrast, the highest conductivity of fabrics which used (NH₄)₂S₂O₈ as oxidant was 1.8 ×10^-4 S·cm^-1. The evolution of resistivities, morphology, surface chemistry and mechanical strength were characterized by a four-points probe resistivity system, scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and mechanical test instrument.

• Periodical: Key Engineering Materials (Volume 735)
• Pages: 158-163
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.735.158
• Online since: May 2017
• Authors: Ming Lu, Zhen Yun Zhao, Zu Lan Liu, Zhi Ping Mao*
• Keywords: Cotton, Electricities, Oxidant, Polypyrrole

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