Impact‐Resistant Hydrogels by Harnessing 2D Hierarchical Structures (Adv. Mater. 1/2023)

Liang, Xiangyu; Chen, Guangda; Lei, Iek Man; Zhang, Pei; Wang, Zeyu; Chen, Xingmei; Lu, Mengze; Zhang, Jiajun; Wang, Zongbao; Sun, Taolin; Liu, Yang; Liu, Ji

doi:10.1002/adma.202370007

Cited by 46 publications

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“…All these phenomena indicate the existence of shear stiffening performance. [ 50–55 ] We performed rheological tests to quantitatively characterize this solid–liquid transition behavior. As shown in Figure 3C, the storage modulus of Sul 2 ‐Sor 3 ‐Eug 5 is only 10 2 Pa in the low‐frequency region, showing a completely viscous behavior.…”

Section: Resultsmentioning

confidence: 99%

Bitumen‐Like Polymers Prepared via Inverse Vulcanization with Shear Stiffening and Self‐Healing Abilities for Multifunctional Applications

Hou,

Zhao,

Duan

et al. 2023

Adv Funct Materials

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Bitumen, which is widely used in various applications, is facing the challenge of being unsustainable. Many strategies are proposed to recycle or replace bitumen. However, most of them can not address the unsustainability of bitumen from the roots. On the other hand, sulfur exists widely on the earth as a kind of industrial waste despite its extensive applications. Herein, a series of bitumen‐like polymers from elemental sulfur is obtained through an inverse vulcanization reaction. The sulfur‐containing polymers exhibit self‐healing, non‐toxic, and adjustable properties depending on the working environment. Based on these features, the applications of sulfur‐containing polymers in self‐healing waterproof sealants, impact‐resistance or shock‐absorption devices, and non‐Newtonian speed bumps are demonstrated. With the method of synthesizing multifunctional bitumen‐like polymers from sulfur wastes, a feasible way is provided to solve simultaneously the challenging problem of bitumen's unsustainability as well as sulfur's utilization, with the advantages including easy massed‐fabrication, non‐toxicity, extremely low cost (≈2 cents per gram) and environment friendliness.

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Section: Resultsmentioning

confidence: 99%

Bitumen‐Like Polymers Prepared via Inverse Vulcanization with Shear Stiffening and Self‐Healing Abilities for Multifunctional Applications

Hou,

Zhao,

Duan

et al. 2023

Adv Funct Materials

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“…Furthermore, for heterogeneous photocatalytic reactions, the effective adsorption of the reactant on the catalyst surface is another requisite for the ignition of the redox reaction. 23,[58][59][60] The BET surface area and porous structure analyses of the TiO 2 , CsPbBr 3 and 20%CPB/TiO 2 samples have shown that the introduction of TiO 2 nanoflower significantly improves the specific surface area and pore volume of 20% CPB/TiO 2 in comparison with that of blank TiO 2 (Fig. S6 and Table S1 †).…”

Section: Photoelectric Propertiesmentioning

confidence: 98%

High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr₃ perovskite supported by hierarchical TiO₂ nanoflakes

Yi,

Ke,

et al. 2023

Nanoscale

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“…[12b,22] In some hydrogels, a large portion of the impact energy is dissipated via a reversible macroscopic deformation of the materials, apart from the sacrifice of covalent/non-covalent interactions. [23] Therefore, the impact resistance mechanism was further studied. Ball-rebound data clearly demonstrated that most of the impact energy was directly absorbed by poly[TA-HM], and only a small portion of the impact energy was transferred to the elastic potential energy.…”

Section: Impact Resistance and Energy Absorption Of Poly[ta-hm]mentioning

confidence: 99%

Supramolecular Soft Material Enabled by Metal Coordination and Hydrogen Bonding: Stretchability, Self‐Healing, Impact Resistance, 3D Printing, and Motion Monitoring

Zhang

Cai

et al. 2023

Small

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Metal coordination can significantly improve the macroscopic performance of many materials by enhancing their dynamic features. In this study, two supramolecular interactions, Fe3+–carboxylic acid coordination, and structural water‐induced hydrogen bonding, into an artificial polymer were introduced. Various attractive features, including flexibility and stretchability, are achieved because of the bulk state and dynamic hydrogen bonds of poly(thioctic acid‐water) (poly[TA‐H]). These unique features are considerably enhanced after the incorporation of Fe3+ cations into poly[TA‐H] because metal coordination increased the mobility of the poly[TA‐H] chains. Thus, the poly(thioctic acid‐water‐metal) (poly[TA‐HM]) copolymer exhibited better flexibility and stretchability. Moreover, notable underwater/low‐temperature self‐healing capacity is obtained via the synergistic effect of the metal and hydrogen bonding. Most of the impact energy is quickly absorbed by poly[TA‐H] or poly[TA‐HM] and effectively and rapidly dissipated via reversible debonding/bonding via the interactions between the metal and hydrogen. Macroscopic plastic deformation or structural failure is not observed during high‐speed (50–70 m s−1) impact experiments or high‐altitude (90 m) falling tests. Furthermore, poly[TA‐HM] displayed good thermal molding properties, which enabled its processing via 3D fused deposition modeling printing. Poly[TA‐HM] also showed considerable effectiveness for monitoring complicated, dynamic, and irregular biological activities owing to its highly pressure‐sensitive nature.

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Impact‐Resistant Hydrogels by Harnessing 2D Hierarchical Structures (Adv. Mater. 1/2023)

Cited by 46 publications

References 0 publications

Bitumen‐Like Polymers Prepared via Inverse Vulcanization with Shear Stiffening and Self‐Healing Abilities for Multifunctional Applications

Bitumen‐Like Polymers Prepared via Inverse Vulcanization with Shear Stiffening and Self‐Healing Abilities for Multifunctional Applications

High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr₃ perovskite supported by hierarchical TiO₂ nanoflakes

Supramolecular Soft Material Enabled by Metal Coordination and Hydrogen Bonding: Stretchability, Self‐Healing, Impact Resistance, 3D Printing, and Motion Monitoring

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Impact‐Resistant Hydrogels by Harnessing 2D Hierarchical Structures (Adv. Mater. 1/2023)

Cited by 46 publications

References 0 publications

Bitumen‐Like Polymers Prepared via Inverse Vulcanization with Shear Stiffening and Self‐Healing Abilities for Multifunctional Applications

Bitumen‐Like Polymers Prepared via Inverse Vulcanization with Shear Stiffening and Self‐Healing Abilities for Multifunctional Applications

High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr3 perovskite supported by hierarchical TiO2 nanoflakes

Supramolecular Soft Material Enabled by Metal Coordination and Hydrogen Bonding: Stretchability, Self‐Healing, Impact Resistance, 3D Printing, and Motion Monitoring

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High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr₃ perovskite supported by hierarchical TiO₂ nanoflakes