The ideal polymer scaffold is a so-called porous scaffold that consists of a nontoxic material having biocompatibility for not causing blood coagulation or inflammation after implantation. In addition, this scaffold has excellent mechanical properties to support the growth of cells. Moreover, in its form, this scaffold permits good adhesion of cells as well as sufficient space between cells to allow cells to access oxygen or nutrients through diffusion of body fluid and to form new blood vessels actively, which results in successful cell growth and differentiation.