ACADSTAFF UGM
| Title | : | Finite Element Investigation of GO Reinforced PLLA Stent Deployment |
| Author | : |
FARID WAJDI (1) Prof. Ir. Alva Edy Tontowi, M.Sc., Ph.D., IPU., ASEAN Eng. (2) Dr. Indraswari Kusumaningtyas, S.T., M.Sc (3) Ir. Andi Rahadiyan Wijaya, S.T., M.Sc., Ph.D., IPM., ASEAN Eng. (4) |
| Date | : | 2019 |
| Keyword | : | Finite Element, Graphene Oxide, PLLA, Stent Finite Element, Graphene Oxide, PLLA, Stent |
| Abstract | : | The introduction of biodegradable polymeric stents is an important development in the treatment of atherosclerosis. This study investigated the potential of poly-l-lactic acid (PLLA) and graphene oxides (GO) nanocomposites material for stent application. In this study, we compared the mechanical behavior of PLLA and PLLA-GO 2% material models in a balloon-expanded stent design using finite element method. The stress and deformation of the stents were evaluated for the expansion, recoiling, and foreshortening studies. The elevated balloon pressures resulted in the increased stent displacement, recoil, and foreshortening for both models. The maximum stent diameters of the PLLA and PLLA-GO stent models reached 3.4 mm and 3.5 mm respectively. The ratio of residual stress of PLLA-GO and PLLA was 1.55:1. The stent recoil (22% vs. 21%) and foreshortening (21 vs. 23%) for both models were relatively similar. Compared to the pristine PLLA stent model, incorporating of nanofillers in PLLA matrices has improved the mechanical performance and possibly could obtain a thinner stent strut size. |
| Group of Knowledge | : | |
| Level | : | Internasional |
| Status | : |
Published
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