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Polypyrrole-coated PDMS fibrous membrane: flexible strain sensor with distinctive resistance responses at different strain ranges
journal contribution
posted on 2016-06-07, 00:00 authored by Haitao Niu, Hua Zhou, Hong Wang, Tong LinFlexible sensors capable of detecting large strain are very useful for health monitoring and sport applications. Here a strain sensor is prepared by applying a thin layer of conducting polymer, polypyrrole (PPy), onto the fiber surface of an elastic fibrous membrane, electrospun polydimethylsiloxane (PDMS). The sensor shows a normal monotonic resistance response to strain in the range of 0–50%, but the response becomes “on-off switching” mode when the strain is between 100 and 200%. Both response modes are reversible and can work repeatedly for many cycles. This unique sensing behavior is attributed to overstretching of the polypyrrole coating, unique fibrous structure, and elasticity of PDMS fibers. It may be useful for monitoring the states where motions are only allowed in a particular range such as joint rehabilitation.
History
Journal
Macromolecular materials and engineeringVolume
301Issue
6Pagination
707 - 713Publisher
Wiley-VCHLocation
WeinheimPublisher DOI
ISSN
1438-7492eISSN
1439-2054Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, Wiley-VCHUsage metrics
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