Extremely Tough Hydrogels with Cotton Fibers Reinforced
Extremely Tough Hydrogels with Cotton Fibers Reinforced
复制标题
棉纤维增强的极其坚韧的水凝胶
DOI：
10.1002/adem.202000508
复制
发表时间：
2020-07-23
影响因子：
3.6
通讯作者：
Zhou, Feng
中科院分区：
文献类型：
--
作者：
Zhang, Ran;Wu, Yang;Zhou, Feng
由于它们通常相互排斥的性质，产生坚固和坚韧的水凝胶材料一直是一项具有挑战性的任务。有趣的是，骨骼和贝壳等天然材料通常提供前所未有的强度和韧性组合，这将为新型材料提供灵感。在本文中，天然软骨的设计被模仿，胶原纤维被掺入细胞外基质中，并制备织物增强复合水凝胶。聚乙烯醇（PVA）水凝胶复合材料表现出显着改善的机械性能，与棉支架或纯PVA凝胶相比。在变形下，水凝胶网络中的纤维被拉出并逐渐破裂以耗散能量，从而为凝胶复合材料提供显著的刚度和韧性。这项工作开辟了一种新颖而简单的方法来构建坚韧的材料，并显示出在关节置换中的潜在应用。
Creating both strong and tough hydrogel materials have been a challenging task, due to their nature of generally mutual exclusion. Interestingly, natural materials such as bone and shells usually offer an unprecedented combination of strength and toughness, which would provide inspiration for novel materials. Herein, the design of natural cartilage is mimicked with collagen fibers incorporated into extracellular matrix, and fabric‐reinforced composite hydrogels are prepared. The poly (vinyl alcohol) (PVA) hydrogel composite exhibits significant improvement in the mechanical properties, compared with cotton scaffold or neat PVA gel. Under deformation, the fibers in the hydrogel network are pulled out and break up gradually to dissipate energy, providing significant stiffness and toughness for the gel composite. This work opens up a novel and simple method to construct tough materials and displays potential application in joint‐replacement.