Hydrophilic and hydrophobic shape memory polymer networks in high-intensity focused ultrasound fields
Auteur(s): |
Jiaxin Xi
Ahmed Sallam David L. Safranski Reza Mirzaeifar Shima Shahab |
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Médium: | article de revue |
Langue(s): | anglais |
Publié dans: | Smart Materials and Structures, 4 janvier 2024, n. 2, v. 33 |
Page(s): | 025024 |
DOI: | 10.1088/1361-665x/ad1d07 |
Abstrait: |
High-intensity focused ultrasound (HIFU) has been investigated as a remote and controlled activation method to noninvasively actuate shape memory polymers (SMPs), specifically in biomedical applications. However, the effects of aqueous environment on shape recoverability of in vivo HIFU-actuated SMPs have yet to be explored. HIFU directs sound waves into a millimeter-sized tightly focused region. In this study, the response of hydrophilic and hydrophobic photopolymerized thermoset SMP networks under HIFU activation in an aqueous environment was investigated. Acrylate-based SMP networks were copolymerized in specific ratios to produce networks with independently adjusted glass transition temperatures ranging from 40 to 80 °C and two distinct water uptake behaviors. The results link the polymer swelling behavior to shape recoverability in various acoustic fields. The presence of absorbed water molecules enhances the performance of SMPs in terms of their shape memory capabilities when activated by HIFU. Overall, understanding the interplay between water uptake and HIFU-actuated shape recovery is essential for optimizing the performance of SMPs in aqueous environments and advancing their use in various medical applications. |
Copyright: | © 2024 Jiaxin Xi, Ahmed Sallam, David L Safranski, Reza Mirzaeifar, Shima Shahab |
License: | Cette oeuvre a été publiée sous la license Creative Commons Attribution 4.0 (CC-BY 4.0). Il est autorisé de partager et adapter l'oeuvre tant que l'auteur est crédité et la license est indiquée (avec le lien ci-dessus). Vous devez aussi indiquer si des changements on été fait vis-à-vis de l'original. |
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10758201 - Publié(e) le:
23.03.2024 - Modifié(e) le:
25.04.2024