| 초록 |
Shape memory polymer is an important class of smart materials which can memorize its original shape upon exposure to various external stimuli. Poly(ε-caprolactone) (PCL) based biodegradable SMPs have been extensively studied for their potential biomedical applications such as self-expanding stent, surgical sutures and scaffold in tissue engineering. However, high hydrophobicity of PCL often limit some bioapplications. One of the useful method to overcome this limit is proper combination of the PCL with a hydrophilic polymer. In this study, PCL having acrylate pendant group was synthesized by ring-opening copolymerization of ε-caprolactone and glycidyl acrylate, and the PCL acrylate was crosslinked by Aza-Michael addition reaction using polyethylene imine, a hydrophillic polyamine, as a crosslinker. Thermal, mechanical properties, water contact angle and shape memory behavior of the PCL-PEI hybrid network was investigated. |
