Strengthening poly(2-hydroxyethyl methacrylate) hydrogels using biochars and hydrophobic aggregations

作     者：Ping Zhang Ziyi Xu Zhiying Wu Ping Xu Canhui Yang 

作者机构：Shenzhen Key Laboratory of Soft Mechanics&Smart ManufacturingDepartment of Mechanics and Aerospace EngineeringSouthern University of Science and TechnologyShenzhenP.R.China Department of ChemistryCity University of Hong KongHong KongP.R.China Department of Respiratory and Critical Care MedicinePeking University Shenzhen HospitalShenzhenGuangdongP.R.China 

出 版 物：《International Journal of Smart and Nano Materials》 (国际智能和纳米材料杂志（英文）)

年 卷 期：2022年第13卷第4期

页      面：561-574页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：P.X.acknowledges the support from Shenzhen Science and Technology Innovation Commission Foundation(No.20206238) The work at the Southern University of Science and Technology is supported by the Natural Science Foundation of Guangdong Province the Stable Support Plan Program of Shenzhen Natural Science Fund Grant[K21326303],and the Science,Technology,and Innovation Commission of Shenzhen Municipality[ZDSYS20210623092005017] 

主　　题：Hydrogel PHEMA mechanical properties biochar hydrophobic aggregation 

摘      要：As the first version of synthetic hydrogel,poly(2-hydroxyethyl methacrylate)hydrogels have found broad ***,their poor mechanical performances have been longstanding hurdles for practical ***,we report on strengthening the poly(2-hydroxyethyl methacrylate)hydro-gels with biochar nanoparticles and hydrophobic aggregations,which are induced by solvent exchange and reinforced by *** the vast anchoring points on the multifunc-tional surfaces of the biochar nanoparticles and the aggregates formed between poly(2-hydroxyethyl methacrylate)chains engender strong and dissipative physical *** result-ing hydrogels exhibit marked mechanical properties,encom-passing high stretchability~7,high fracture toughness~1360 J m−2,high elastic modulus~180 kPa,low friction coefficient~0.2,self-recovery,and ***,we demonstrate the versatility of the proposed strategy by using water/ionic liquid binary solvent as the sol-vent system,Laponite as the nano-reinforcement,and dryanneal as the hydrophobic aggregation enhancer to synthesize mechanically robust ***(2-hydroxyethyl methacry-late)hydrogels of superior mechanical properties are expected to enable previously inaccessible applications in biomedicine and engineering.