Fabrication of ultrasensitive and flexible strain sensor based on multi-wall carbon nanotubes coated electrospun styrene-ethylene-butylene-styrene block copolymer fibrous tubes. (5th September 2022)

• Record Type: Journal Article
• Authors: Zhou, Bangze; Liu, Zhanxu; Li, Chenchen; Li, Lele; Zhang, Xiaofeng; Sheng, Yaping; Zhou, Yanfen; Jiang, Liang; Tian, Mingwei; Chen, Shaojuan
• Is Part Of: European polymer journal. Volume 178(2022)
• Publication Date: 2022-09-05
• Subjects: SEBS -- MWCNTs -- Dopamine -- Strain sensor; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2022.111501
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: Highlights: The strain sensor was based on SEBS fibrous tube and MWCNTs. The strain sensor can reach a high sensitivity of 3.62 × 10 5 when the strain was 306%. The strain sensor can easily be compressed and exhibit good response under the pressure of 0∼29.4 N. Abstract: As a wearable electronic device, strain sensor has developed rapidly in recent years, because it is conductive to detecting human movements in various situations. In this study, a new type of highly stretchable and sensitive strain sensor based on electrospun styrene-ethylene-butylene-styrene block copolymer (SEBS) fibrous tubes coated with multi-wall carbon nanotubes (MWCNTs) was reported. The sensor reached a high sensitivity of 3.62 × 10 5 when the strain was 306%. It also exhibited good stability, repeatability, and durability for different applied strains, different feed speeds, and long-term cyclic loading (15000 cycles). Besides, the sensor could easily be compressed due to its tubular structure and exhibited good response under 0∼29.4 N. Additionally, it showed excellent washing fastness under ultrasonication for 120 min and superior sensing performance in monitoring pulse beat and joint movements. This work provides a new strategy for fabricating strain sensors with high stretchability and high sensitivity. These results demonstrated that the fabricated strain sensor had great potential in smart wearable devices.