2022
DOI: 10.1002/adsu.202200033
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An Ultra‐Strong, Water Stable and Antimicrobial Chitosan Film with Interdigitated Bouligand Structure

Abstract: Natural polymeric materials are an attractive potential replacement for non‐biodegradable plastics. However, one of the main challenges for high‐end applications of these materials, is to maintain their high mechanical properties in a watery environment. Here, inspired by the reinforcement principle of multiscale architecture in natural crab exoskeletons, an ultra‐strong and hydrostable film is developed through a top‐down method directly from the crab shell. The resulting chitosan film exhibits an outstanding… Show more

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Cited by 7 publications
(4 citation statements)
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“…Such special structure endows the material with excellent properties of strength, stiffness, and toughness, making it have the potential to be used as high‐performance biomaterial. Li et al fabricated a crab shell‐derived chitosan film with densely packed Bouligand structure by top‐down strategies (S. Li, Wang, Huang, et al, 2022). The crab shell‐derived film showed outstanding tensile strength of 221.8 MPa in dry state and 70 MPa in wet state, while possessing good antimicrobial ability due to the function of NH 2 groups of chitosan.…”
Section: Natural Structure‐inspired Biomedical Nanomaterialsmentioning
confidence: 99%
“…Such special structure endows the material with excellent properties of strength, stiffness, and toughness, making it have the potential to be used as high‐performance biomaterial. Li et al fabricated a crab shell‐derived chitosan film with densely packed Bouligand structure by top‐down strategies (S. Li, Wang, Huang, et al, 2022). The crab shell‐derived film showed outstanding tensile strength of 221.8 MPa in dry state and 70 MPa in wet state, while possessing good antimicrobial ability due to the function of NH 2 groups of chitosan.…”
Section: Natural Structure‐inspired Biomedical Nanomaterialsmentioning
confidence: 99%
“…Moving beyond nacre, the Bouligand structure, commonly found in entities like fish scales and crab shells, has also captured the attention of biomaterial developers. Li et al’s development of a chitosan film derived from crab shells beautifully replicates this dense Bouligand structure, offering increased tensile strength and inherent antibacterial properties [ 221 ]. Furthermore, Han et al innovatively transformed fish scales, using in situ mineralization of calcium silicate, into scaffolds for tendon repair, highlighting the diverse potential of these natural structures [ 222 ].…”
Section: Synthesis Of Bio-inspired Biomedical Nanomaterialsmentioning
confidence: 99%
“…A few other examples are fish scale lamellae, shrimp skin, lotus petal, and crab shell structure, containing essential salts and biopolymers, which increases the mobility of ions in electrolytes while effectively inhibiting the agglomeration of nanoparticles [80][81][82][83]. The Bouligand structure of a crab shell serves as an effective host, allowing transfer of sulfur in Li-S batteries [84,85]. Several researchers have identified farm crops and leftovers as a critical source of sustainable carbon-based electrodes for fuel cells [77,86].…”
Section: "Green" Materials Development For Eecsmentioning
confidence: 99%