Topologically Designed Cross-linking Network for Stretchable and Recoverable Pressure-Sensitive Adhesives with Exceptional Softness
발표자
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초록
내용
There is an increasing demand for soft-electronic devices. Such devices require adhesives that demonstrate appropriate stretching and recovery to support the assembly of various parts. The adhesives need to avoid plastic deformation and adhesion failure under repeated stretching. However, stretchable adhesives acquired by covalent cross-linking and inorganic fillers have limitations in softness and adhesion performance due to the hindered chain mobility; a contradiction of viscoelasticity. Thus, providing elasticity without the compensation of chain mobility is strongly required. In this study, we introduced slide-blocking units to movable cross-linked polymers to improve the elasticity. The topologically designed cross-linking network causes a strain stiffening effect in the adhesives, showing outstanding softness, adhesion performance, and mechanical properties. Furthermore, the adhesives with the unique cross-linking network exhibited excellent stretching and recovery properties.