论文标题
坚硬粘合水凝胶断裂特性的缩放行为
Scaling behavior of fracture properties of tough adhesive hydrogels
论文作者
论文摘要
坚硬的粘合水凝胶在工程和医学中找到了广泛的应用。这种水凝胶具有对内聚和粘附力失败的高电阻。但是，当水凝胶暴露在水中时，上的骨折特性可能会恶化。坚硬的粘合水凝胶的聚合物馏分与断裂性能之间的基本相关性在很大程度上尚未探索。在这里，我们研究了坚硬的粘合水凝胶的内聚力和粘附能如何随肿胀过程而发展。结果揭示了在聚合物分数上的两个量的类似缩放定律。我们的缩放分析和计算研究表明，它源于剪切模量的缩放。该研究将促进水凝胶骨折缩放的研究，并为新的坚硬粘合水凝胶提供开发指南。
Tough adhesive hydrogels find broad applications in engineering and medicine. Such hydrogels feature high resistance against both cohesion and adhesion failure. The superior fracture properties may, however, deteriorate when the hydrogels swell upon exposure of water. The underlying correlation between the polymer fraction and fracture properties of tough adhesive hydrogels remains largely unexplored. Here we study how the cohesion and adhesion energies of a tough adhesive hydrogel evolve with the swelling process. The results reveal a similar scaling law of the two quantities on the polymer fraction. Our scaling analysis and computational study reveal that it stems from the scaling of shear modulus. The study will promote the investigation of scaling of hydrogel fracture and provide development guidelines for new tough adhesive hydrogels.
