材料科学
消散
弹性(材料科学)
自愈水凝胶
聚合物
脚手架
生物相容性
变形(气象学)
复合材料
纳米技术
计算机科学
高分子化学
数据库
热力学
物理
冶金
作者
Kemin Wang,Ruixue Yin,Yuhui Lu,Han Qiao,Qifan Zhu,Jing He,Weiyou Zhou,Hongbo Zhang,Tingting Tang,Wenjun Zhang
标识
DOI:10.1016/j.msec.2021.112185
摘要
Energy absorption or dissipation ability has been widely developed in tough hydrogels and 3D nano-structured sponges for a variety of applications. However, fully recoverable energy dissipation and fatigue resistance under large deformation is still challenging yet highly desirable. Polymer network with homogeneous chemical crosslinking structures is an efficient way to construct hydrogels with high resilience and fatigue resistance. Unfortunately, such polymer network usually has poor energy dissipation capability. In this paper, we propose a new approach to build the ability of fully recoverable energy dissipation into covalent-crosslink polymer network by integrating soft and hard chains in a uniform crosslinking network and present the one-pot synthesis method for constructing corresponding polymer sponges by low-temperature phase-separation photopolymerization. The application of such polymer sponges as a tissue engineering scaffold, fabricated by using cyclic acetal units and PEG based monomers in particular is demonstrated. For the first time, we show the feasibility of building a synthetic scaffold with the characteristics of high porosity, super compressibility and resilience, fast recovery, completely recoverable energy dissipation, high fatigue resistance, biodegradability and biocompatibility. Such a scaffold is promising in tissue engineering especially in load-bearing applications.
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