Abstract
In the long history of development and elimination, the creatures have derived a variety of exquisite structures and unique properties, typically natural nacre, marine mussel and Glycera to adapt to the environment and resist the predation of the enemy. Hence, inspired by the combination of special structures and properties of multiple creatures, a novel type of graphene-based micro/nano architecture was proposed, and the related bioinspired nanocomposites were fabricated, Polydopamine coated Graphene oxide/Nanocellulose/Polydopamine (P-GCP). Apart from replicating the layered structure of natural nacre, P-GCP also introduced copper ions and polydopamine to simulate the hardening mechanism of the Glycera’s jaw and the composition of adhesive proteins in mussels to further improve the tensile strength and conductivity of nanocomposites, respectively. The test results showed that the tensile strength of P-GCP reached 712.9 MPa, which was 5.3 times that of natural nacre. The conductivity of artificial nacre was as high as 207.6 S/cm, which was equivalent to that of reduced graphene oxide (rGO). Furthermore, the material exhibited outstanding electrical conductivity when it connected as wires in a circuit, demonstrating the practical application prospects in aerospace, supercapacitors, biomaterials, artificial bones and tissue engineering.
Highlights
Tip of the jaw instead of being evenly distributed, which enhances the material’s hardness, stiffness and abrasion resistance[22,23]
The result of Energy dispersive X-ray spectroscopic (EDS) analysis found a large amount of elemental copper in the materials, indicating that copper nanoparticles were uniformly dispersed on the nanocomposites[25]
We reported ternary artificial nacre, reduced graphene oxide (rGO)/Cellulose nanofiber (CNF)/PDA49
Summary
Tip of the jaw instead of being evenly distributed, which enhances the material’s hardness, stiffness and abrasion resistance[22,23]. A novel micro/nano architecture was proposed inspired by various creatures, and related materials were obtained. Based on the "brick–mortar" structure of natural nacre, P-GCP artificial nacre exhibited hierarchical micro/nanoscale architecture. Cross-linked molecular network and copper nanoparticle coating inspired by Glycera and marine mussels increased the tensile strength and electrical conductivity of the materials, respectively. The synergistic effects of different interface interactions including hydrogen bonding, ionic bonding, covalent bonding and chelate architecture, were crucial factors in improving mechanical strength[24]. The tensile strength of P-GCP had reached 712.9 MPa, which were 5.3 times that of natural nacre. The successful connection of nanocomposites with conductivity of 207.6 S/cm in the circuit indicated huge application prospects in diverse electronic devices
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