Abstract
Chitosan is a linear polysaccharide produced by deacetylation of natural biopolymer chitin. Owing to its good biocompatibility and biodegradability, non-toxicity, and easy processing, it has been widely used in many fields. After billions of years of survival of the fittest, many organisms have already evolved a nearly perfect structure. This paper reviews the research status of biomimetic functional materials that use chitosan as a matrix material to mimic the biological characteristics of bivalves, biological cell matrices, desert beetles, and honeycomb structure of bees. In addition, the application of biomimetic materials in wound healing, hemostasis, drug delivery, and smart materials is briefly overviewed according to their characteristics of adhesion, hemostasis, release, and adsorption. It also discusses prospects for their application and provides a reference for further research and development.
Highlights
Chitin (CT), the second most abundant natural polysaccharide on earth, after cellulose, is a major structural component in the exoskeletons of a variety of organisms, including protists, diatoms, sponges, arthropods, molluscs, insects, and arachnids, especially seafood, such as shrimp and crab [1,2,3,4,5]
This review focuses on the imitation of unique structures and functions of some natural organisms, such as bivalves, biological cell substrates, desert beetles, and honeycomb structures of bees, and the preparation of functional materials with related properties and their derivatives, using CS as the matrix material (Figure 1)
Marine mussel organisms possess a solid structure to enable strong, persistent adhesions to various materials in humid environments. It is mediated by a mussel-foot-protein (MFPS) sequence structure containing a large amount of 3,4-dihydroxy phenyl-L-alanine (DOPA) [73,74,75]
Summary
Chitin (CT), the second most abundant natural polysaccharide on earth, after cellulose, is a major structural component in the exoskeletons of a variety of organisms, including protists, diatoms, sponges, arthropods, molluscs, insects, and arachnids, especially seafood, such as shrimp and crab [1,2,3,4,5]. Chitosan (CS), a deacetylated derivative of chitin, has net cationicity and a variety of functional groups, which can form electrostatic complexes or multilayer structures with other negatively charged substances or natural polymers. In recent years, it has been widely used in many fields, such as tissue engineering, wound healing, drug transportation, adhesives, and adsorption materials, due to its good biocompatibility and biodegradability, safety and non-toxicity, broad-spectrum antibacterial properties, and hemostasis. Bionics is an emerging discipline that studies the structure, function, and optimization of biomaterial systems through the intersection of biology, chemistry, and physics It uses active substances derived from nature to design various structural and functional materials through the principle of bionics. The1.chitosan-based biomimetic materials and the of material prepared
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