text: Chitosan is a polysaccharide composed of randomly distributed β-(1-4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). It is derived from the N-deacetylation of chitin and  has been used for several applications such as drug delivery, space-filling implants and in wound dressings. However, one drawback of this polymer is its weak mechanical properties  and is thus often combined with other polymers  such collagen to form a polymer with stronger mechanical properties for cell encapsulation applications.