Synthesis and Characterization of Conductive Core-Shell Polyacrylonitrile-Polypyrrole Nanofibers
Authors: Jun, Tae-Sun; Nguyen, Tuan-Anh; Jung, Yongju; Kim, Yong Shin
Source: Journal of Nanoscience and Nanotechnology, Volume 12, Number 7, July 2012 , pp. 5967-5971(5)
Publisher: American Scientific Publishers
Abstract:Nonwoven polyacrylonitrile-polypyrrole (PAN-PPy) core–shell nanofiber mats were prepared through the growth of PPy layers on electrospun PAN nanofibers via a two-step vapor-phase polymerization, i.e., the wet-coating of ferric tosylate (FeTos) oxidants on PAN nanofibers followed by exposure to pyrrole monomers in the gas phase. Under the conditions ([FeTos]=10 wt%, reaction time=15 min, temperature = 15°C), the PPy polymerization procedure led to both a uniform coating over the PAN surface with an average thickness of 18 nm and cross-linkages among the nanofibers without a noticeable change in the highly porous nanofibrous structures. The oxidant concentration and polymerization time were found to be key parameters for achieving a good nanostructured core–shell fiber mat. FT-IR, XPS, XRD and conductivity measurements confirmed the synthesis of Tos-doped PPy with some degree of crystallinity and a high conductivity.
Document Type: Research Article
Publication date: 2012-07-01
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