Multifunctional MXene/CNTs Composite Fibers with High Strength, Conductivity, and Bending Sensitivity Fabricated via Sodium Alginate-Assisted Wet Spinning.
- 1Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macau SAR 999078, China.
- 2Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Abstract
Multicomponent nanocomposite fibers with synergistic properties are highly desirable for next-generation flexible electronics and sensors. In this study, MXene, carbon nanotubes (CNTs), and their composite fibers were successfully fabricated via a wet-spinning method using sodium alginate (SA) as a binder and fiber-forming agent. The morphology, mechanical properties, electrical conductivity, electrothermal behavior, and bending sensing performance of the resulting fibers were systematically investigated. All fibers exhibited longitudinal surface wrinkles and a nearly circular cross-section, indicating good process controllability. The MXene/CNTs@SA fibers, featuring a hierarchical synergistic network constructed from one-dimensional CNTs and two-dimensional MXene nanosheets, demonstrated significantly enhanced mechanical performance, with a tensile strength of 76.38 ± 7.09 MPa and conductivity of 16.14 ± 0.36 S·cm⁻¹. Under a 12 V applied voltage, the MXene/CNTs@SA fibers achieved a saturation temperature of 52.77 °C and a power density of 2.95 kW·cm⁻³, demonstrating balanced electrothermal performance. Furthermore, the MXene/CNTs@SA fibers exhibited excellent flexibility and sensing stability, with resistance variations within ± 1.6% over repeated 100 bending-release cycles. The bending gauge factor was determined to be 7.36, confirming high sensitivity and cyclic durability. These results demonstrate that the wet-spun MXene/CNTs@SA composite fibers, with their robust mechanical strength, enhanced electrical conductivity, reliable electrothermal response, and superior bending sensitivity, hold great promise for applications in flexible electronic devices and wearable sensors.
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BibTeX
@article{zheng2026multifunctional,
title = {{Multifunctional MXene/CNTs Composite Fibers with High Strength, Conductivity, and Bending Sensitivity Fabricated via Sodium Alginate-Assisted Wet Spinning.}},
author = {Ting Zheng and Shuting Xu and Zherui Zhang and Kaixuan Wang and Xiaodong Wang and Guoxing Sun},
journal = {Biosensors},
year = {2026},
month = sep,
doi = {10.3390/bios16100532},
url = {https://europepmc.org/article/MED/42930079},
note = {CC BY},
}
RIS
TY - JOUR
TI - Multifunctional MXene/CNTs Composite Fibers with High Strength, Conductivity, and Bending Sensitivity Fabricated via Sodium Alginate-Assisted Wet Spinning.
AU - Ting Zheng
AU - Shuting Xu
AU - Zherui Zhang
AU - Kaixuan Wang
AU - Xiaodong Wang
AU - Guoxing Sun
PY - 2026
DA - 2026/09/24
JO - Biosensors
DO - 10.3390/bios16100532
UR - https://europepmc.org/article/MED/42930079
AB - Multicomponent nanocomposite fibers with synergistic properties are highly desirable for next-generation flexible electronics and sensors. In this study, MXene, carbon nanotubes (CNTs), and their composite fibers were successfully fabricated via a wet-spinning method using sodium alginate (SA) as a binder and fiber-forming agent. The morphology, mechanical properties, electrical conductivity, electrothermal behavior, and bending sensing performance of the resulting fibers were systematically investigated. All fibers exhibited longitudinal surface wrinkles and a nearly circular cross-section, indicating good process controllability. The MXene/CNTs@SA fibers, featuring a hierarchical synergistic network constructed from one-dimensional CNTs and two-dimensional MXene nanosheets, demonstrated significantly enhanced mechanical performance, with a tensile strength of 76.38 ± 7.09 MPa and conductivity of 16.14 ± 0.36 S·cm⁻¹. Under a 12 V applied voltage, the MXene/CNTs@SA fibers achieved a saturation temperature of 52.77 °C and a power density of 2.95 kW·cm⁻³, demonstrating balanced electrothermal performance. Furthermore, the MXene/CNTs@SA fibers exhibited excellent flexibility and sensing stability, with resistance variations within ± 1.6% over repeated 100 bending-release cycles. The bending gauge factor was determined to be 7.36, confirming high sensitivity and cyclic durability. These results demonstrate that the wet-spun MXene/CNTs@SA composite fibers, with their robust mechanical strength, enhanced electrical conductivity, reliable electrothermal response, and superior bending sensitivity, hold great promise for applications in flexible electronic devices and wearable sensors.
SN - 2079-6374
ER -