Bioresorbable polymers natural biopolymers

Beyond the biocompatibility presented by medical grade and novel synthesized bioresorbable PUs, they lack the bioactivity of natural biopolymers such as collagen and elastin. In response to this challenge, many authors have blended PUs with natural polymers to improve the biocompatibility and bioactivity of vascular grafts. Table 15.4 summarizes the mechanical performance of some selected vascular grafts based on PU blends. 

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