biostudies-literatureXue SState Key Laboratory Oil and Gas Reservoir Geology and ExploitationOpen Funds of State Key Laboratory of Petroleum Pollution ControlFoundation of Sichuan Youth Science and TechnologyFok Ying Tung Education Foundation393https://www.ebi.ac.uk/biostudies/studies/S-EPMC6281544biostudies-literatureUnknown13(1)Many living tissues possess excellent mechanical properties and self-healing ability. To mimic these living tissues, a series of novel composite hydrogels, poly(acrylic acid)/surface-modified boron nitride nanosheets (PAA/BNNS-NH₂) were fabricated simply through hierarchically physical interactions: molecular-scale metal coordination interaction between -COOH of PAA and Fe³⁺ and nanoscale H-bond between -COOH of PAA and -NH₂ of BNNS-NH₂. The composite hydrogels exhibit both excellent mechanical properties (including enhanced fracture stress, elongation, toughness, Young's modulus, and dissipated energy) and rapid healing ability without any external stimulus. Especially, the B_0.5P₇₀ (the hydrogel with BNNS concentration of 0Nanoscale research lettersFabrication of Poly(acrylic acid)/Boron Nitride Composite Hydrogels with Excellent Mechanical Properties and Rapid Self-Healing Through Hierarchically Physical Interactions.PMC6281544PPC2017008PLN1201, SWPU2016JQ0036161103Guo MZhang TXue SLei WLiu DWu YfalseFabrication of Poly(acrylic acid)/Boron Nitride Composite Hydrogels with Excellent Mechanical Properties and Rapid Self-Healing Through Hierarchically Physical Interactions.Many living tissues possess excellent mechanical properties and self-healing ability. To mimic these living tissues, a series of novel composite hydrogels, poly(acrylic acid)/surface-modified boron nitride nanosheets (PAA/BNNS-NH₂) were fabricated simply through hierarchically physical interactions: molecular-scale metal coordination interaction between -COOH of PAA and Fe³⁺ and nanoscale H-bond between -COOH of PAA and -NH₂ of BNNS-NH₂. The composite hydrogels exhibit both excellent mechanical properties (including enhanced fracture stress, elongation, toughness, Young's modulus, and dissipated energy) and rapid healing ability without any external stimulus. Especially, the B_0.5P₇₀ (the hydrogel with BNNS concentration of 02018-01-01T00:00:00Z2018 Dec2026-05-06T04:00:37.525Z2019-03-27T00:13:43ZS-EPMC62815443051984010.1186/s11671-018-2800-2