Abstract
An electroconductive polymer, poly-3,4-ethylenedioxithiophene⁄poly-styrenesulphonic acid (PEDOT⁄PSS) is noticed because it has high generality, electroconductivity, and transparency. We are considering practicability of a cloth sensing device made of electroconductive polymer fibers. However, as the tensile strength of pure PEDOT⁄PSS fiber is low, it is not suitable for fabricating devices. We examined a possibility of coexisting of high conductivity and high strength by blend fibers consisting of an electroconductive polymer and another polymer (polyvinyl alcohol: PVA). A tensile strength of the PEDOT⁄PSS and PVA blend fibers was about twice as that of the pure PEDOT⁄PSS fiber. The electroconductivity of the blend fibers also increased several times despite of decreasing amount of conductive polymer. The Raman spectrum revealed that the comformation of PEDOT was changed into a linear or expanded coil comformation by combining with PVA.
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