9.3.1.2　Synthetic biomedical polymer materials

Synthetic polymers are produced from hydrocarbons in the laboratory，such as poly（lactic acid）（PLA），poly（lactic-co-glycolic acid）（PLGA），and polyurethane（PU）.Although they may lack the inherent cell interaction mechanisms in natural biomedical polymer materials，their precise controllability in terms of composition and repeatability，and their ability to combine with natural biomedical polymer materials make them ideal for skin regeneration applications.(https://www.daowen.com)