Strong, healable materials with bio-like ordered architectures and versatile functionality
作者：Xinkai Li1 Yuyan Wang2 Xinxing Zhang1
關(guān)鍵字：biomimetic ordered structure, functionalization, interfacial dynamic bonding, mechanical strengthening, self-healing materials
論文來源：期刊
發(fā)表時間：2024年
The capacity of biological tissues to undergo self-healing is crucial for the
performance of functions and the continuation of life. Conventional intrinsic
self-healing materials demonstrate analogous functionality depending on the
dissociation-recombination of reversible bonds with no need of extra repair
agents. However, the trade-off relationship between mechanical strength and
self-healing kinetics in intrinsic self-healing systems, coupled with the lack
of additional functionality, restricts their service life and practical applica-
tions. Diversified highly ordered structures in organisms significantly affect
the energy dissipation mechanism, signal transmission efficiency, and molec-
ular network reconstruction capability due to their multi-dimensional differ-
entiated macroscopic composite constructions, microscopic orientation tex-
tures, and topologies/bonding types at molecular level. These architectures
exhibit distinctive strengthening mechanisms and functionalities, which pro-
vide valuable references. This review aims at providing the current status
of advanced intrinsic self-healing materials with biomimetic highly ordered
internal micro/nanostructures. Through highlighting specific examples, the
classifications, design inspirations, and fabrication strategies of these newly
developed materials based on integrating dynamic interactions with ordered
nano/microstructures are outlined. Furthermore, the strengthening and self-
healing balance mechanisms, structure–functionalization relationships, and
potential application values are discussed. The review concludes with a per-
spective on the challenges, opportunities, and prospects for the development,
application, and promotion of self-healable materials with bio-like ordered
architectures.