International Journal

Shape Memory Polymer-Based Hook-and-Loop Fastener for Robust Bonding and on-Demand Easy Separation
Author
Chen Yang, Yueping Wang, Hyunggyu Kim, Paul Wang, Daehoon Han*, and Howon Lee*
Journal
Advanced Engineering Materials
Year
2025
File
Adv Eng Mater - 2025 - Yang - Shape Memory Polymer‐Based Hook‐and‐Loop Fastener for Robust Bonding and on‐Demand Easy.pdf (6.6M) 0회 다운로드 DATE : 2025-05-28 19:09:28

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Inspired by the unique structural design of diaspores of flowering plants, hook-and-loop fasteners have been developed to offer strong bonding, reusability, andlow maintenance requirements. However, conventional hook-and-loop fastenersalso require a significant separation force for release. Herein, a 3D hook-and-loopfastener made of a shape memory polymer (SMP) is presented. The SMP hookpatch with an array of microhooks is fabricated using projection microstereoli-thography (PμSL) and molding. The robust bonding of the hook-and-loop fas-tener is demonstrated at room temperature, and a significant reduction inseparation force when heated, enabling on-demand easy separation of the hook-and-loop fastener through temperature control. Moreover, the deformation of theSMP hooks that occurs during separation can be recovered by heating, allowingfor repeated uses. The SMP hook-and-loop fastener with tunable bond strengthholds great potential for applications in various industrial fields that require easyassembly, robust bonding, and on-demand release with low separation force.