Biodegradable and Bioactive Porous Polyurethanes Scaffolds for Bone Tissue Engineering (Report‪)‬

1. INTRODUCTION Currently, tissue engineering involving synthetic materials offers a practical approach for bone repair and regeneration. In this approach, a 3-D porous biodegradable scaffold is beneficial to guide cell attachment, proliferation and tissue regeneration [1,2]. Therefore, a number of researchers are interested in developing biodegradable polymeric scaffolds for bone engineering repair [3,4,5,6]. Polyurethane, which concludes the polyurethane urea elastomer, is regarded as a kind of bone repair materials for its nice mechanical property and their special shape memory function.