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Poling and characterization of piezoelectric polymer fibers for use in textile sensors
RISE - Research Institutes of Sweden, Swerea, Swerea IVF.ORCID iD: 0000-0002-1750-8762
Chalmers University of Technology.
Acreo Swedish ICT AB.
Acreo Swedish ICT AB.
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2013 (English)In: Sensors and Actuators A-Physical, ISSN 0924-4247, E-ISSN 1873-3069, Vol. 201, 477-486 p.Article in journal (Refereed) Published
Abstract [en]

This study reports on the poling and characteristics of a melt-spun piezoelectric bicomponent fiber with poly(vinylidene fluoride) (PVDF) as its sheath component and a conductive composite with carbon black (CB) and high density polyethylene (HDPE) as its core component. The influence of poling conditions on the piezoelectric properties of the fibers has been investigated. The poling parameters temperature, time and poling voltage have been varied and the piezoelectric effect of both contact- and corona-poled yarns have been evaluated. The results show that a high piezoelectric effect is achieved when the poling voltage is high as possible and the poling temperature is between 60° C and 120 °C. It was also shown that permanent polarization is achieved in a time as short as 2 s in corona-poled fibers. A yarn exposed to a sinusoidal axial tension of 0.07% strain (the corresponding force amplitude was 0.05 N) shows an intrinsic voltage output of 4 V. The mean power from a 25 mm length of yarn is estimated to be 15 nW. To demonstrate the fibers sensor properties, they are woven into a textile fabric from which a force sensor is manufactured and used to detect the heartbeat of a human. © 2013 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2013. Vol. 201, 477-486 p.
Keyword [en]
Fiber sensor, Piezoelectric fibers, Poling, Textile sensor
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13329DOI: 10.1016/j.sna.2013.08.011Scopus ID: 2-s2.0-84883766775OAI: oai:DiVA.org:ri-13329DiVA: diva2:973535
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-08-03Bibliographically approved

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Publisher's full textScopushttp://www.sciencedirect.com/science/article/pii/S0924424713003956

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