POS3-0203
Fabrication of Shape Erasable Liquid-Core Hydrogel Fiber
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Yunjin Lee (Daegu Gyeongbuk Institute of Science & Technology)
Co-Author(s)
Abstract
Hydrogel fibers are promising for soft biomaterials and actuators due to their biocompatibility, flexibility, and processability. However, conventional hydrogel fibers typically possess fixed crosslinked networks after fabrication, limiting internal mobility and hindering shape reconfiguration. To address this challenge, we designed a core-shell hydrogel fiber composed of a mechanically stable shell that preserves shape integrity and a liquid core that provides mobility through a reversible sol-gel transition. This core is formed via interface-confined, hydrogen bond-driven solidification between tannic acid and a gelatin-based polymeric ink. The resulting fibers can be readily deformed into various shapes at elevated temperatures, where the inner core becomes liquefied, and subsequently retain the programmed shape upon cooling as the core re-gels. These findings demonstrate that liquid-core hydrogel fibers can serve as temperature-responsive, shape-erasable, and reconfigurable soft polymer platforms.
