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Type: Journal article
Title: 3D printing interface-modified PDMS/MXene nanocomposites for stretchable conductors
Author: Aakyiir, M.
Tanner, B.
Yap, P.L.
Rastin, H.
Tung, T.T.
Losic, D.
Meng, Q.
Ma, J.
Citation: Journal of Materials Science and Technology, 2022; 117:174-182
Publisher: Elsevier
Issue Date: 2022
ISSN: 1005-0302
Statement of
Mathias Aakyiir, Brayden Tanner, PeiLay Yap, Hadi Rastin, TranThanh Tung, Dusan Losic, Qingshi Meng, Jun Ma
Abstract: Additive manufacturing has rapidly evolved over recent years with the advent of polymer inks and those inks containing novel nanomaterials. The compatibility of polymer inks with nanomaterial inks remains a great challenge. Simple yet effective methods for interface improvement are highly sought-after to significantly enhance the functional and mechanical properties of printed polymer nanocomposites. In this study, we developed and modified a Ti3C2 MXene ink with a siloxane surfactant to provide compatibility with a polydimethylsiloxane (PDMS) matrix. The rheology of all the inks was investigated with parameters such as complex modulus and viscosity, confirming a self-supporting ink behaviour, whilst Fourier-transform infrared spectroscopy exposed the inks’ reaction mechanisms. The modified MXene nanosheets have displayed strong interactions with PDMS over a wide strain amplitude. An electrical conductivity of 6.14 × 10−2 S cm−1 was recorded for a stretchable nanocomposite conductor containing the modified MXene ink. The nanocomposite revealed a nearly linear stress-strain relationship and a maximum stress of 0.25 MPa. Within 5% strain, the relative resistance change remained below 35% for up to 100 cycles, suggesting high flexibility, conductivity and mechanical resilience. This study creates a pathway for 3D printing conductive polymer/nanomaterial inks for multifunctional applications such as stretchable electronics and sensors.
Keywords: 3D printing; MXene; Nanocomposites; Stretchable conductors
Description: Available online 17 February 2022
Rights: © 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
DOI: 10.1016/j.jmst.2021.11.048
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Appears in Collections:ARC Research Hub for Graphene Enabled Industry Transformation publications
Chemical Engineering publications

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