An anti-pressure, fatigue-resistant and rapid self-healing hydrogel based on a nano-micelle assembly

Shao, Zhiang; Cheng, Weimin; Hu, Xiangming; Zhao, Yanyun; Wang, Peng; Wu, Mingyue; Xue, Di; Hou, Jiaoyun; Bian, Susu

doi:10.1039/c9py01839e

Cited by 7 publications

(5 citation statements)

References 31 publications

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“…Larger is the loss tangent, more prominent is the viscous behavior of the material. A smaller tangent value indicates a higher elasticity . As shown in Figure A, with the increase in CS@TA content, the storage modulus of PAA‐CS@TA‐Al 3+ hydrogel gradually decreased and the resilience capability of the material after stretching deteriorated, indicating that a higher CS@TA content reduced the crosslink density, leading to a decline in the elasticity of the material.…”

Section: Resultsmentioning

confidence: 99%

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Zhang

et al. 2020

Polymers for Advanced Techs

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In this work, poly(acrylic) acid-chitosan @ tannic acid-aluminum ion (PAA-CS@TA-Al 3+ ) double-network hydrogel was prepared via prefabrication, blending method, and Al 3+ immersion method. The interaction between chitosan and tannic acid (CS@TA) was analyzed using Fourier transfer infrared spectra and UV-Vis spectra. The UV-Vis spectrum was also used to confirm the formation of ionic coordination in the gel. Then, the possible coordination modes were studied and analyzed. The microscopic pore structure and macroscopic strain behavior of the gel were analyzed using SEM and tensile testing, respectively, which verified that the tensile strength (≈32 KPa) and elongation at break (≈1700%) of the gel primarily resulted from its crosslinking structure. In addition, the gel also demonstrated a good self-healing performance with recovery ≈92.2% at 60 minutes.Hence, the proposed novel self-healing gel can provide inspiration for the preparation of future self-healing gels. K E Y W O R D Schitosan, double-network hydrogel, ionic coordination, self-healing, tannic acid

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Section: Resultsmentioning

confidence: 99%

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Zhang

et al. 2020

Polymers for Advanced Techs

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“…Therefore, by adding a suitable surfactant (APG), not only can the wetting ability of the dust binder be improved so that it can quickly infiltrate and penetrate the dust layer (Figure c; also see Figure S8) but also its atomization performance can be improved. After water evaporates, APG/NPs-PAA molecules are self-assembled into larger molecules through hydrogen bonds and firmly fixed to the dust surface through the self-adhesion effect of lignin-Ag NPs (Figure d); this is due to the increase in the number of hydrogen bonding interactions in the molecules in the hydrophobic environment. , Then, as water bound to the dust binder completely evaporates, APG/NPs-PAA molecules adsorbed on the dust molecule become closer to one another, and together with lignin-Ag NPs, the dust bonding gel is formed, finally resulting in consolidation (Figure e).…”

Section: Resultsmentioning

confidence: 99%

Preparation of Mussel-Inspired Stable-Bonding Dust Binders for Fugitive Dust Control

Shao

Cheng

et al. 2022

ACS Appl. Polym. Mater.

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Considerable fugitive dust generated during the mining, transportation, and storage of mineral materials pollutes the environment and poses threat to the health of workers and surrounding residents. Spraying polymer solutions is usually used to suppress fugitive dust, but the dust will return to the air under the erosion of wind and rain due to the lack of a stable bonding mechanism with the dust. Based on this, through polymerization of mussel-inspired lignin-Ag nanoparticles (NPs), acrylic acid, and alkyl polyglucoside, an environmentally friendly stable-bonding dust binder was prepared. Different from the high initial viscosity of traditional polymer dust suppressants, the stable-bonding dust binder with high consolidation ability but easily atomized characteristic related to the synthesis of short-chain polymer systems with concentration-sensitive self-assembly behavior. When a 10 m/s wind was applied to dust treated by the stable-bonding dust binder, the mass-loss rate (6%) was lower than the dust treated by only a surfactant solution (100%) or polyacrylic acid solution (27%). When 12 L of water was sprayed on the dust (100 g) treated with the stable-bonding dust binder, the residual stress strength (1 MPa) was higher than the dust treated with only the polyacrylic acid solution (0.017 MPa). Furthermore, molecular dynamics simulation of the interaction between the dust-binder molecules and coal molecules was carried out to confirm the adhesion of lignin-Ag NPs to dust. Our research on dust binders provides a path for the stable control of fugitive dust, which improves the consolidation efficiency of dust and reduces costs.

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“…Hydrogel formation of micelle containing dispersions using the micelles as crosslinkers can be performed as well, meaning that micelles are formed in the first place and then the hydrogels are formed using the micellar entities as crosslinker. [86][87][88] A chitosan (CS)-based hydrogel was described by Liu and coworkers that was loaded with micelles from starch derivatives (dialdehyde starch, DAS), grafted with vinyl phenylboronic acid (VPBA) and sulfobetaine (SB) (Figure 5). [89] Due to Schiff-base formation the micelles were incorporated into the CS-hydrogel scaffold.…”

Section: Micelles As Crosslinkermentioning

confidence: 99%

“…As such, crosslinking points can be cleaved and reformed leading to selfhealing properties as well as degradability. [88,[95][96][97] Hsu and coworkers described the synthesis of a self-healing hydrogel based on aldehyde endfunctional Pluronics F127 and CS via imine bond formation. [98] Furthermore, the thermoresponsive nature of Pluronics was exploited to form micelles in the hydrogel structure at elevated temperature and to tailor hydrogel stiffness on demand.…”

Section: Micelles As Crosslinkermentioning

confidence: 99%

Multicompartment Hydrogels

Schmidt

2022

Macromol. Rapid Commun.

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Hydrogels belong to the most promising materials in polymer and materials science at the moment. As they feature soft and tissue-like character as well as high water-content, a broad range of applications are addressed with hydrogels, e.g., tissue engineering and wound dressings but also soft robotics, drug delivery, actuators, and catalysis. Ways to tailor hydrogel properties are crosslinking mechanisms, hydrogel shape, and reinforcement, but new features can be introduced by variation of hydrogel composition as well, e.g., via monomer choice, functionalization or compartmentalization. In particular, multicompartment hydrogels drive progress toward complex and highly functional soft materials. In the present review the latest developments in multicompartment hydrogels are highlighted with a focus on three types of compartments; micellar/vesicular, droplets, and multilayers including various subcategories. Furthermore, several morphologies of compartmentalized hydrogels and applications of multicompartment hydrogels will be discussed as well. Finally, an outlook toward future developments of the field will be given. The further development of multicompartment hydrogels is highly relevant for a broad range of applications and will have a significant impact on biomedicine and organic devices.

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An anti-pressure, fatigue-resistant and rapid self-healing hydrogel based on a nano-micelle assembly

Abstract: A trace amount of acetic acid can cause DMC-NaSS micelles to split, resulting in the formation of a novel self-healing hydrogel.

Cited by 7 publications

References 31 publications

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Preparation of Mussel-Inspired Stable-Bonding Dust Binders for Fugitive Dust Control

Multicompartment Hydrogels

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