Fabrication and Evaluation of Print Quality of Polylactic Acid Cylindrical Scaffolds as Stents and the Effect of Geometry on their Shape Memory Properties

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ZARE SH.; GOLZAR M.; ANSARI M.

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Journal: Modares Mechanical Engineering Year:2021 | Volume:21 | Issue:2 Page(s): 91-98

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Title

Fabrication and Evaluation of Print Quality of Polylactic Acid Cylindrical Scaffolds as Stents and the Effect of Geometry on their Shape Memory Properties

Author(s)

ZARE SH. | GOLZAR M. | ANSARI M. | Issue Writer Certificate

Keywords

Shape Memory ScaffoldQ1

StentQ2

Experimental TestQ1

Shape RecoveryQ1

Abstract

Memory-shaped polymers are thermally induced subsets of intelligent materials that require thermomechanical behavior to accurately understand their function. In this study, polymeric memory scaffolds were fabricated using polylactic acid by molten labeling method in reticular honeycomb, rhombic and elliptical forms. Parameters such as longitudinal dimensions and the wall thickness of printed scaffolds compared to the designed scaffolds and solutions were presented to enhance the printing accuracy. Built-in scaffolds can be a good option for Stent use. Formal memory properties experiments with 30% axial strain were performed to study the shape memory behavior of polymer on scaffolds. The results showed that the percentage of Shape Recovery in scaffolds with symmetric angular grid networks was higher than elliptical reticular Stents. The minimum percentage of longitudinal recovery belonged to the elliptical reticular Stent and was 74. 5%. The percentage of longitudinal recovery of honeycomb and rhododendron reticular Stents is approximately equal to 80. 3%. The results of this study can be used to optimize the Stent grid geometry to increase the retrieval force to resolving vascular clogging.

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APA: Copy

ZARE, SH., GOLZAR, M., & ANSARI, M.. (2021). Fabrication and Evaluation of Print Quality of Polylactic Acid Cylindrical Scaffolds as Stents and the Effect of Geometry on their Shape Memory Properties. MODARES MECHANICAL ENGINEERING, 21(2 ), 91-98. SID. https://sid.ir/paper/407127/en

Vancouver: Copy

ZARE SH., GOLZAR M., ANSARI M.. Fabrication and Evaluation of Print Quality of Polylactic Acid Cylindrical Scaffolds as Stents and the Effect of Geometry on their Shape Memory Properties. MODARES MECHANICAL ENGINEERING[Internet]. 2021;21(2 ):91-98. Available from: https://sid.ir/paper/407127/en

IEEE: Copy

SH. ZARE, M. GOLZAR, and M. ANSARI, “Fabrication and Evaluation of Print Quality of Polylactic Acid Cylindrical Scaffolds as Stents and the Effect of Geometry on their Shape Memory Properties,” MODARES MECHANICAL ENGINEERING, vol. 21, no. 2 , pp. 91–98, 2021, [Online]. Available: https://sid.ir/paper/407127/en

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