Back to Search
Start Over
Layer-by-layer assembled nacre-like polyether amine/GO hierarchical structure on carbon fiber surface toward composites with excellent interfacial strength and toughness
- Source :
- Composites Science and Technology. 198:108296
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Inspired by nacre's sophisticated “brick-and-mortar” structure, multilayered polyether amine (PEA)/graphene oxide (GO) hybrid building blocks were incorporated onto the surface of carbon fiber via Layer-by-Layer (LbL) assembly to strengthen and toughen the interphase of composites. Impressive improvements of 67.7% and 129.0% in interfacial strength and toughness over those of untreated fiber composites are achieved for composites with 9 layers of PEA/GO on fiber surface. The synergistic effects stemming from covalent bonds, hydrogen bonds and π-π interaction, as well as crack deflection caused by homogeneous GO layers, improved surface energy and wettability are major reasons for the increase in interfacial adhesion. The major toughening mechanisms are attributed to interfacial micro-cracks, viscoplastic energy dissipation of PEA and GO slippage. This work provides a promising route of bio-inspired structural composites with excellent strength and toughness.
- Subjects :
- Toughness
Materials science
Graphene
Hydrogen bond
Layer by layer
General Engineering
Oxide
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Surface energy
0104 chemical sciences
law.invention
chemistry.chemical_compound
chemistry
law
Covalent bond
Ceramics and Composites
Wetting
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 02663538
- Volume :
- 198
- Database :
- OpenAIRE
- Journal :
- Composites Science and Technology
- Accession number :
- edsair.doi...........36ba3ec47c8fb1272bc891fdad90d431