作者: Loïc Germain , Carlos A. Fuentes , Aart W. van Vuure , Anne des Rieux , Christine Dupont-Gillain
DOI: 10.1016/J.MATDES.2018.04.037
关键词: Composite material 、 Materials science 、 Crystallinity 、 Scaffold 、 Porosity 、 Gyroid 、 Tissue engineering 、 3d printed 、 Fused deposition modeling
摘要: Abstract Fused deposition modeling (FDM), a low-cost and easy-to-use additive manufacturing technique, was used to produce poly(lactic acid) (PLA) gyroid scaffolds. Such morphology selected for its spring shape, high porosity leading good nutrient waste diffusion, favorable mechanical properties. Printing parameters were optimized the need of support material improve printing evidenced. The compared common strut-based structure. Scaffold measured by micro-CT, properties determined compression tests, taking into account effect geometry, resolution, PLA crystallinity. impact scaffold geometry crystallinity on degradation studied in vitro. Porosity structure 71%, as expected from model. tests showed an isotropic behavior gyroid, contrast with scaffold. Upon aging physiological conditions, scaffolds retained their integrity during 64 weeks, while control lost struts starting week 33, way that depended resolution. Based these results, design is proposed suitable mesh architecture tissue engineering can be elaborated using FDM techniques, personalized implants.