Hydrophilic and hydrophobic shape memory polymer networks in high-intensity focused ultrasound fields

• DOI: 10.1088/1361-665x/ad1d07
• Publication Date: 2024-01-10T22:26:21Z
• Authors: Jiaxin Xi; Ahmed Sallam; David L Safranski; Reza Mirzaeifar; Shima Shahab
• Keywords: High-intensity focused ultrasound; Shape-memory polymer; Focused Ultrasound; Thermosetting polymer

Abstract 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 recoverability vivo HIFU-actuated SMPs have yet be explored. HIFU directs sound waves into millimeter-sized tightly region. In this study, response hydrophilic hydrophobic photopolymerized thermoset SMP networks under an was investigated. Acrylate-based were copolymerized specific ratios produce with independently adjusted glass transition temperatures ranging from 40 80 °C two distinct water uptake behaviors. The results link polymer swelling behavior various acoustic fields. presence absorbed molecules enhances performance terms their capabilities when activated by HIFU. Overall, understanding interplay between recovery is essential for optimizing environments advancing use medical