Issue 4, 2024

Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Abstract

Self-healing materials are widely used in flexible and stretchable electronic devices because of their capability to repair cracks or damages that occur during usage, thus extending their lifetime. In this work, self-healable polydimethylsiloxane-polyurea/carbon composite elastomers (CCF/PDMS) are prepared successfully via the design of multiple hydrogen bonds. The multiple hydrogen bonds formed between the urea groups of polymer chains and between the urea groups and the carboxyl/hydroxyl groups of the graphite/carboxylated carbon nanotube complex fillers (CCFs) endow CCF/PDMS with excellent recyclability, mechanical properties (687.9%, 1.02 MPa), and rapid ethanol-assisted self-healing properties (99.4% at room temperature for 3 h), which exceeds most of the reported polydimethylsiloxane-based composites. Besides, the mechanism of ethanol-assisted self-healing properties is investigated using in situ FTIR spectra, providing a new strategy for self-healing composites of hydrogen bonding systems. Significantly, CCF endows CCF/PDMS with impressive self-powered capability. The self-healing triboelectric nanogenerator (SH-TENG) with an area of 30 × 30 × 0.25 mm3 prepared from CCF/PDMS has a remarkable output (125 V, 11.9 μA) and can easily power 144 LEDs. The design strategy with excellent mechanical performance, ultrahigh self-healing properties, and remarkable self-powered capability can meet the wide applications of wearable flexible sensors, electronic skins, flexible robots, self-powered devices, etc.

Graphical abstract: Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Supplementary files

Article information

Article type
Paper
Submitted
30 Aug 2023
Accepted
28 Nov 2023
First published
03 Dec 2023

J. Mater. Chem. A, 2024,12, 2024-2035

Ethanol-assisted room-temperature rapid self-healing polydimethylsiloxane-polyurea/carbon composite elastomers for energy harvesters and smart sensors

Y. Du, H. Wang, X. Li, J. Liu, Y. Liu, W. Zhang, Q. Liu, Y. Da, H. Li, Z. Sun, Y. Dong and X. Tian, J. Mater. Chem. A, 2024, 12, 2024 DOI: 10.1039/D3TA05217F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements