Magnetic programming of 4D printed shape memory composite structures
By Fenghua Zhang, Linlin Wang, Zhichao Zheng, Yanju Liu, Jinsong Leng. Composites. Part A, Applied science and manufacturing, 2019
208 citations recorded by the source corpus.
Abstract 4D printed shape memory polymers and their composites are currently a highly topical research area. The potential applications for 4D printed smart materials are wide-reaching, with particular promise for personalized medicine. In this work, we 4D printed various structures made of biocompatible and biodegradable polylactic acid (PLA) and PLA/Fe3O4 composite filaments. The shape memory behaviors of the 4D printed structures triggered by magnetic field were investigated. The printed structures can return to their original shapes with a high speed in just a few seconds. Moreover, the structures like bone tissues printed by PLA/Fe3O4 composites filaments with 15% Fe3O4 were actuated by magnetic field at 27.5 kHz. During the shape recovery process, surface temperature of the printed structures is uniform and around 40 °C. This physiologically relevant operating temperature range is a highly attractive feature for potential healthcare and biomedical applications.
Subfields: Biomedical Engineering, Mechanical Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/a4bba93fbde307738e186c5bb4815024e7927d4f
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In Biomedical Engineering
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Citations in the corpus
- The shape – morphing performance of magnetoactive soft materials (2021, methodology): “In addition to the programming of the magnetic fillers, the 4D printing technique can be used for the programming of magnetic shape memory composite structures [176].”
- Additive manufacturing of polymer nanocomposites: Needs and challenges in materials, processes, and applications (2021, methodology): “Likewise, Zhang et al. [113] investigated the use of Fe 3 O 4 as reinforcement to PLA for 4DP applications.”