Highly flexible and recyclable F–SiO2/MPU composites for self-powered active motion sensors. (10th November 2021)

• Record Type: Journal Article
• Authors: Xu, Xu; Ouyang, Yuting; Lu, Shaorong; Ruan, Hong; Li, Yuqi
• Is Part Of: Composites science and technology. Volume 216(2021)
• Publication Date: 2021-11-10
• Subjects: Recyclable -- Polyurethane -- Diels-alder -- Triboelectric nanogenerator; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2021.109068
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: Triboelectric nanogenerator (TENG) with flexibility, recyclability, and high mechanical performance are highly desirable for self-powered active motion sensors. Herein, maleic anhydride and furan groups were introduced into the polyurethane and SiO2, respectively, to obtain furan modified SiO2 (F–SiO2 ) and maleic anhydride modified polyurethane (MPU). The dynamic crosslinked F–SiO2 /MPU composites (FM) possessed the recyclability due to the Diels-Alder reaction. In addition, the mechanical properties of FM were improved due to the improvement of the interface compatibility between F–SiO2 and MPU. Especially, at 5 wt% content (FM-5), the tensile strength and elongation at break are 7.09 MPa and 845.61%, respectively. Compared with pure MPU, it has increased by 249.26% and 176.30%, respectively. Additionally, at 3 wt% F–SiO2 content, the short-circuit current ( Isc ), open circuit voltage ( Voc ), transferred charge ( Qsc ) and peak power density of FM-3 increased by 18.60%, 36.04%, 49.24% and 13.00%, respectively. This work offers new insights into the design and preparation of triboelectric nanogenerator for self-powered active motion sensors with flexibility, and recyclability. Graphical abstract: Image 1 Highlights: A reversible crosslinked F–SiO2 /MPU composites (FM) were prepared based on the Diels-Alder reaction. The recyclable FM exhibited excellent mechanical properties and recyclability. The FM can be used in triboelectric nanogenerators to make self-powered sensors.