| 초록 |
The purpose of this study is to develop a soybean oil & caprolactone based shape memory polymer (SMP) which could memorize the shape of complicated the internal organs using a necklace-like cross-linker. The basic idea is to add a polyrotaxane cross-linker: it is a molecular necklace structure that can induce high cross-link density as well as large molecular movement. Furthermore, in this study, we intend to maximize the molecular movement by introducing a linear polymer functional group into the PRX backbone, thereby increasing the cross-linking density and increasing the flexibility of the SMP. To confirm this hypothesis, mechanical tests were carried out, then the physical properties increased about twice. In addition, it was confirmed that caprolactone having bio-degradation characteristics in the body was maintained at 25 % of the original strength in week four when the cross-linking density was higher using PRX cross-linker. |
