Bioprinting Chitosan

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large three-dimensional functional objects made chitosan.


bioinspired materials, manufacturing concept inspired natural nacre, shrimp carapace or insect cuticles, has led development of bioprinting methods manufacture large scale consumer objects using chitosan. method based on replicating molecular arrangement of chitosan natural materials fabrication methods, such injection molding or mold casting. once discarded, chitosan-constructed objects biodegradable , non-toxic. method used engineer , bioprint human organs or tissues.


pigmented chitosan objects can recycled, option of reintroducing or discarding dye @ each recycling step, enabling reuse of polymer independently of colorants. unlike other plant-based bioplastics (e.g. cellulose, starch), main natural sources of chitosan marine environments , not compete land or other human resources.



film made of shrilk bioplastic


in 2011 scientists harvard created material called shrilk made sequential deposition of fibroin extracted silk, , chitosan extracted shrimp shells. design mimics layered structure of insect endocuticle similar components. result composite twice strength of stronger component (i.e.chitosan) , ten times strength of both components blend.








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