Super Tough and Self-Healable Poly(dimethylsiloxane) Elastomer via Hydrogen Bonding Association and Its Applications as Triboelectric Nanogenerators
- 15 June 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 12 (28), 31975-31983
- https://doi.org/10.1021/acsami.0c08213
Abstract
Poly(dimethylsiloxane) (PDMS) as one of the electron-drawing materials has been widely used in triboelectric nanogenerators (TENG), which is expected to generate electron through friction and required to endure dynamic loads. However, the nature of the siloxane bond and the low interchain interaction between the methyl side groups result in low fracture energy in PDMS elastomers. Here, a strategy that combined the advantages of the dynamic of hierarchical hydrogen bonding and phase-separation-like structure was adopted to improve the toughness of PDMS elastomers. By varying both stronger and weaker hydrogen bonding within the PDMS network, a series of super tough (up to 24,000 J/m2), notch-insensitive, transparent, and autonomous self-healable elastomers were achieved. In addition, a hydrophilic polymeric material (PDMAS-U10) was synthesized as the conductive layer. A transparent TENG was fabricated by sandwiching the PDMAS-U10 between two pieces of the PDMS elastomer. Despite its hydrophilic nature, PDMAS-U10 exhibit strong adhesion interaction with hydrophobic PDMS elastomers. As such, a tough (16,500 J/m2), self-healable (efficiency ∼97%), and transparent triboelectric nanogenerator was constructed. A self-powered system employing the TENG is also demonstrated in this work.Keywords
Funding Information
- Science and Engineering Research Council (A1786a0034)
This publication has 60 references indexed in Scilit:
- Stretchable, Transparent, Ionic ConductorsScience, 2013
- Toward Large-Scale Energy Harvesting by a Nanoparticle-Enhanced Triboelectric NanogeneratorNano Letters, 2013
- Transparent Triboelectric Nanogenerators and Self-Powered Pressure Sensors Based on Micropatterned Plastic FilmsNano Letters, 2012
- Multiphase design of autonomic self-healing thermoplastic elastomersNature Chemistry, 2012
- The effect of the rate of strain on tearing in rubberPolymer Testing, 2011
- Toughness and fracture energy of PDMS bimodal and trimodal networks with widely separated precursor molar massesPolymer, 2010
- Self-healing and thermoreversible rubber from supramolecular assemblyNature, 2008
- Properties of Segmented Polyether Poly(urethaneureas) Based of 2,4-Toluene Diisocyanate. 2. Infrared and Mechanical StudiesMacromolecules, 1980
- Infrared Studies of Hydrogen Bonding in Toluene Diisocyanate Based PolyurethanesMacromolecules, 1975
- Rupture of rubber. I. Characteristic energy for tearingJournal of Polymer Science, 1953