文献类型：期刊文献

英文题名：Soft-hard hybrid covalent-network polymer sponges with super resilience, recoverable energy dissipation and fatigue resistance under large deformation

作者：Wang, Kemin[1];Yin, Ruixue[2];Lu, Yuhui[3];Qiao, Han[4];Zhu, Qifan[5];He, Jing[2];Zhou, Wenming[2];Zhang, Hongbo[2];Tang, Tingting[4];Zhang, Wenjun[1]

机构：[1]Shanghai Univ, Sch Mechatron & Automat, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Complex & Intelligent Syst Res Ctr, Shanghai, Peoples R China;[3]Changzhou Univ, Sch Mat Sci & Engn, Changzhou, Jiangsu, Peoples R China;[4]Shanghai Jiao Tong Univ, Shanghai Ninth Peoples Hosp, Dept Orthopaed Surg, Shanghai Key Lab Orthopaed Implant,Sch Med, Shanghai, Peoples R China;[5]Univ Saskatchewan, Div Biomed Engn, Saskatoon, SK, Canada

年份：2021

卷号：126

外文期刊名：MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS

收录：;EI(收录号：20212410498600);WOS:【SCI-EXPANDED(收录号:WOS:000663455200004)】；

基金：We thank the Instron (Shanghai) Centre for their help on the instrument. The first author would like to thank Prof. L.Y. Zhu for his advice on data analysis. The authors would like to thank the National Natural Science Foundation of China (21304011) for financial support.

语种：英文

外文关键词：Energy dissipation; Resilience; Fatigue resistance; Polymer sponge; Tissue engineering

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.