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Conductive and Sensing Performance of PVA and PEDOT/PSS Blended Fiber

Published online by Cambridge University Press:  23 April 2013

Hiroaki Miura ,
Akio Omori ,
Junko Takizawa  and
Mutsumi Kimura
Hiroaki Miura
Affiliation:
Nissan Motor Co., Ltd., Research Center, 1-1, Morinosatoaoyama, Atsugi 243-0123, Japan Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
Akio Omori
Affiliation:
Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
Junko Takizawa
Affiliation:
Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
Mutsumi Kimura
Affiliation:
Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
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Abstract

In this paper, we developed textile-based sensors for measuring vital signs. We fabricated conductive fiber made from organic conjugated polymers without the use of inorganic materials. While the tensile strength of pure poly-3,4-ethylenedioxythiophene/poly-4-styrene sulfonic acid (PEDOT/PSS) fiber was low, it was unsuitable to fabricate textile-based devices. To avoid this drawback, we examined the composite fibers composed of PEDOT/PSS and poly(vinyl alcohol) (PVA) to obtain good mechanical properties as well as a high electronic conductivity. PVA was used as a matrix component to connect colloidal PEDOT/PSS particles within the fibers. We succeeded continuous and uniform spinning from the mixed solution of PEDOT/PSS and PVA through the modified wet spinning process. Tensile strength of the composite fiber increased to twice that consisted only of PEDOT/PSS. In addition, the electric conductivity increased about three times by the combination with PVA. Textiles made of conductive fibers behaved as flexible electrodes for the detection of heartbeat.

Keywords

fiberelectrical propertiessensor
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1499: Symposium N – Precision Polymer Materials―Fabricating Functional Assemblies, Surfaces, Interfaces and Devices , 2013 , mrsf12-1499-n05-15
Copyright
Copyright © Materials Research Society 2013

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