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Strain sensing performance of conductive polyester knitted fabric and its application in body motion monitoring

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Title Strain sensing performance of conductive polyester knitted fabric and its application in body motion monitoring
 
Creator Fan, Mengjing
Yue, Xinyan
Zhou, Xinru
Han, Xiao
Hong, Jianhan
 
Subject Conductive fabric
Knitted fabric
Body motion monitoring
Polyester fabric
Polyvvinyl alcohol
Polyaniline
Strain-resistance sensing
 
Description 72-82
The effect of PVA (polyvinyl alcohol) content in solution system on the structure and performance of conductive
PET/PANI/PVA (polyester/polyaniline/PVA) composite yarns has been studied. Conductive knitted fabrics of 2+2 rib
structure are then prepared by conductive composite yarns; the strain–resistance sensing performances of the conductive
knitted fabrics and their application in body motion monitoring are studied. The results indicate that an appropriate amount
of PVA could help the conductive PANI layer on the fibre surface to form a stable interpenetrating polymer network
structure, and improve its structural uniformity and conductivity. When the mass ratio of PVA to aniline in the solution
system is 5%, the conductivity of the PET/PANI/PVA composite yarn could reach 1.887 S/cm, which is about 40% higher
than that without PVA. Similarly, it’s wash fastness and abrasion resistance are significantly higher than that without
PVA. Under the action of stretch-recovery, the electrical resistance of the conductive knitted fabric is first increased,
then decreased, again increased and decreased. The conductive fabric shows a good sensing linearity when the resistance
dropped or increased monotonously. In the process of cyclic tension, the resistance of the fabric increases and then tends to
be stable. The fabric has good sensing repeatability after dozens of stretching cycles, and the addition of PVA in the
conductive yarn is beneficial for the conductive fabric to obtain better sensing repeatability. The conductive knitted fabric
has good sensitivity, with its gauge factor reaching up to 126.99. The strain sensor based on the conductive PET/PANI/PVA
knitted fabric can be used to monitor real-time movement of a human body.
 
Date 2024-04-01T11:08:15Z
2024-04-01T11:08:15Z
2024-04
 
Type Article
 
Identifier 0975-1025 (Online); 0971-0426 (Print)
http://nopr.niscpr.res.in/handle/123456789/63653
https://doi.org/10.56042/ijftr.v49i1.9552
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJFTR Vol.49(1) [March 2024]