Effect of fused deposition modeling bioprinting variables on damping factor in shape memory structures for in vitro applications.
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| Title: | Effect of fused deposition modeling bioprinting variables on damping factor in shape memory structures for in vitro applications. |
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| Authors: | Jirandehi, Kamyab Pourbagheri1 (AUTHOR), Jalali Aghchai, Abdolhossein1 (AUTHOR) jalali@kntu.ac.ir, Etemadi Haghighi, Shahram2 (AUTHOR), Sezavar Seyedi Jandaghi, Seyed Hashem3 (AUTHOR) |
| Source: | Australian Journal of Mechanical Engineering. Sep2025, Vol. 23 Issue 4, p798-812. 15p. |
| Subjects: | Shape memory effect, Polycaprolactone, Surgical stents, Energy dissipation, Viscoelasticity, Bioprinting, Fused deposition modeling, In vitro studies |
| Abstract: | The aim of this study is to investigate the variation in the shape memory effect in the Tan Delta output parameter of shape memory polymeric stents, fabricated by the bio-FDM process, during a reversible endothermic cycle with changes in the input parameters. Pure polycaprolactone polymer was directly used in this study. The Damping Factor, or Tan Delta, is a key factor in expressing the shape memory effect of the memory stents. For a more accurate evaluation of this effect, SEM tests, uniaxial tensile tests, and dynamic mechanical and thermal analyses were employed. The Tan Delta of the shape memory stents was approximately 18.81%. Surface morphology changes led to approximately a 14.18% variation in elastic properties, as the dynamic molecular motion and polymer chain constraints resulted in increased pressure. It was found that the fabrication input parameters led to approximately a 20% change in the shape memory effect. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The aim of this study is to investigate the variation in the shape memory effect in the Tan Delta output parameter of shape memory polymeric stents, fabricated by the bio-FDM process, during a reversible endothermic cycle with changes in the input parameters. Pure polycaprolactone polymer was directly used in this study. The Damping Factor, or Tan Delta, is a key factor in expressing the shape memory effect of the memory stents. For a more accurate evaluation of this effect, SEM tests, uniaxial tensile tests, and dynamic mechanical and thermal analyses were employed. The Tan Delta of the shape memory stents was approximately 18.81%. Surface morphology changes led to approximately a 14.18% variation in elastic properties, as the dynamic molecular motion and polymer chain constraints resulted in increased pressure. It was found that the fabrication input parameters led to approximately a 20% change in the shape memory effect. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14484846 |
| DOI: | 10.1080/14484846.2024.2424052 |
