On 3D printing of thermoplastic polyurethane over woven fabric for wearable sensors

Kumar, S, Singh, R, Singh, AP and Wei, Y ORCID: https://orcid.org/0000-0001-6195-8595, 2023. On 3D printing of thermoplastic polyurethane over woven fabric for wearable sensors. Advances in Materials and Processing Technologies. ISSN 2374-068X

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Abstract

In the past two decades several studies have been reported on thermoplastic-based 3D printed sensors. However, little has been reported on wearable sensors prepared by thermoplastic printing on woven fabric, especially for four-dimensional (4D) properties. This study reports the 3D printing of thermoplastic polyurethane (TPU) on woven fabric by using a fused filament fabrication (FFF) setup for the fabrication of wearable sensors. Further, rheological, mechanical, voltage resistance (V-R), radio frequency (RF), and 4D capabilities of the 3D printed substrate have been established. The 3D printing of TPU on woven fabric was performed at 225°C nozzle temperature with a printing speed of 21 mm/s, and infill density was kept at 80% and 100%. The RF characteristics were calculated using a vector network analyser (VNA) which suggests that there is no shift in resonating frequency (2.60 GHz at −81 dB) for ring resonator printed with 100% infill density (with an increase in strain value), whereas for 80% infill density sensor there was a notable shift in resonating frequency (from 2.82 GHz at −75 dB to 2.71 GHz at −76 dB) when the sensor was strained under load which further lead to a change in dielectric constant (εr) and loss tangent (tanδ).

Item Type:	Journal article
Publication Title:	Advances in Materials and Processing Technologies
Creators:	Kumar, S., Singh, R., Singh, A.P. and Wei, Y.
Publisher:	Informa UK Limited
Date:	14 October 2023
ISSN:	2374-068X
Identifiers:	Number Type 10.1080/2374068x.2023.2269667 DOI 1822293 Other
Rights:	This is an Accepted Manuscript of an article published by Taylor & Francis in Advances in Materials and Processing Technologies on 14.10.2023, available online: http://www.tandfonline.com/10.1080/2374068X.2023.2269667
Divisions:	Schools > School of Science and Technology
Record created by:	Jeremy Silvester
Date Added:	27 Oct 2023 08:19
Last Modified:	14 Oct 2024 03:00
URI:	https://irep.ntu.ac.uk/id/eprint/50128

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