Interfacial Molecular Lock: A Universal Strategy for Hydrogel Adhesion

Ding, Ning; Dai, Yu; Xia, Fan; Zhang, Xiaojin

doi:10.1021/acsapm.2c01990

Cited by 10 publications

(8 citation statements)

References 44 publications

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“…The described system is obtained via a simple one-step preparation without any risk of delamination, as the preparation does not involve the bilayer systems, as described in the literature. 43,44 For instance, Kirillova et al reported self-folding alginate films through a direct ink writing printing process creating a bilayer system. 45 They also obtained self-folding films with modified hyaluronic acid where the actuating mechanism is more related to the hydrogel film preparation process than to the exploitation of the cross-linking chemistry.…”

Section: Photo-cross-linking Of Methacrylated Alginatementioning

confidence: 99%

Dual Cross-Linked Stimuli-Responsive Alginate-Based Hydrogels

Habib,

Berthalon,

Leclercq

et al. 2024

Biomacromolecules

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Sodium alginate with different molecular weights (55, 170, and 320 kg mol −1 ) were chemically modified by grafting methacrylic moieties onto the hydroxyl groups of the alginate backbone. The methacrylation was optimized to obtain different degrees of modification. Chemically cross-linked hydrogels were obtained following UV-light irradiation in the presence of a photoinitiator. The swelling behavior and the mechanical properties were observed to depend on both the degree of methacrylation and the alginate molecular weight. Due to the chain entanglement present in highviscosity sodium alginate, lower degrees of modification were required to tune the hydrogel properties. Moreover, in the presence of Ca 2+ , secondary cross-linking was introduced by the coordination of the alginate guluronate moieties with the Ca 2+ ions. The addition of this secondary cross-linking caused fast volume shrinkage and a reinforcement of the mechanical properties. The secondary cross-linking was reversible, and the hydrogels regained their original shape for at least three cycles. Additionally, the dual cross-linked network can be used to induce adhesion between hydrogels and serve as a building block for self-folding actuators.

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Section: Photo-cross-linking Of Methacrylated Alginatementioning

confidence: 99%

Dual Cross-Linked Stimuli-Responsive Alginate-Based Hydrogels

Habib,

Berthalon,

Leclercq

et al. 2024

Biomacromolecules

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“…Smaller molecules can also induce molecular interlocking at the hydrogel–tissue interface. Zhang et al discovered that introducing TA, which is a bulky polyphenol molecule, in between the hydrogel–tissue junction can significantly enhance their bonding strength [ 119 ] (Figure 6B). The adhesion mechanism is initiated by the bidirectional passive diffusion and penetration of TA into the hydrogel/tissue structures.…”

Section: Principles and Designs For Hydrogel–tissue Adhesionmentioning

confidence: 99%

From Adhesion to Detachment: Strategies to Design Tissue‐Adhesive Hydrogels

Ho,

van Hilst,

Cui

et al. 2023

Advanced NanoBiomed Research

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The use of tissue adhesives dates to 1940s when surgical glues were introduced for wound closure applications. However, current clinically used tissue adhesives (fibrin and cyanoacrylate glues) have limited adhesion strength and biocompatibility issues which restrict their performance in targeted applications. Due to this unmet clinical challenge, there is a need to develop next‐generation tissue adhesives to expand the current limited available options. Another factor that is often overlooked in the field is the consequence of when these tissue adhesives fail while in use in specific applications. In this review, the complications arising from tissue adhesives that have insufficient adhesion strength are covered, where unintentional loosening and detachment can lead to serious complications depending on both the applications and scenarios in which the adhesives are used. Next, the current methodologies employed to design tissue‐adhesive hydrogels targeting specific applications are also collated. Finally, the different strategies to engineer on‐demand removal property of these tissue‐adhesive hydrogels are consolidated, including some perspectives on current challenges and outlooks in this field.

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“…Strong hydrogel adhesion was achieved through catechol chemistry and the dissipative matrix. 33 The MIJ hydrogel performed with high sensitivity (GF = 0.842) in detecting human motion. Fe 3 O 4 @ PDA can be served as thermal interface materials (TIMs) and affect the thermal conductivity of the MIJ hydrogel.…”

Section: Introductionmentioning

confidence: 99%

“…The MIJ hydrogel was prepared by the cross-linking polymerization of acrylamide with alginate-calcium along with polydopamine-decorated Fe 3 O 4 nanoparticles (Fe 3 O 4 @PDA) at one side induced by a magnetic field to avoid uncontrollable material diffusion. Strong hydrogel adhesion was achieved through catechol chemistry and the dissipative matrix . The MIJ hydrogel performed with high sensitivity (GF = 0.842) in detecting human motion.…”

Section: Introductionmentioning

confidence: 99%

Magneto-Induced Janus Adhesive-Tough Hydrogels for Wearable Human Motion Sensing and Enhanced Low-Grade Heat Harvesting

Xu,

Sun,

Huang

et al. 2024

ACS Appl. Mater. Interfaces

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Janus hydrogels with different properties on the two surfaces have considerable potential in the field of material engineering applications. Various Janus hydrogels have been developed, but there are still some problems, such as stress mismatch caused by the double-layer structure and Janus failure caused by material diffusion in the gradient structure. Here, we report a Janus adhesive-tough hydrogel with polydopaminedecorated Fe 3 O 4 nanoparticles (Fe 3 O 4 @PDA) at one side induced by magnetic field to avoid uncontrollable material diffusion in the cross-linking polymerization of acrylamide with alginate-calcium. The magneto-induced Janus (MIJ) hydrogel has an adhesive surface and a tough bulk without an obvious interface to avoid stress mismatch. Due to the intrinsic dissipative matrix and the abundant catechol groups on the adhesive surface, it shows strong adhesion onto various substrates. The MIJ hydrogel has high sensitivity (GF = 0.842) in detecting tiny human motion. Owing to the synergy of Fe 3 O 4 @PDA-enhanced interfacial adhesion and heat transfer, it is possible to quickly generate effective temperature differences when adhering to human skin. The MIJ hydrogel achieves a Seebeck coefficient of 13.01 mV•K −1 and an output power of 462.02 mW•m −2 at a 20 K temperature difference. This work proposes a novel strategy to construct Janus hydrogels for flexible wearable devices in human motion sensing and low-grade heat harvesting.

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Interfacial Molecular Lock: A Universal Strategy for Hydrogel Adhesion

Cited by 10 publications

References 44 publications

Dual Cross-Linked Stimuli-Responsive Alginate-Based Hydrogels

Dual Cross-Linked Stimuli-Responsive Alginate-Based Hydrogels

From Adhesion to Detachment: Strategies to Design Tissue‐Adhesive Hydrogels

Magneto-Induced Janus Adhesive-Tough Hydrogels for Wearable Human Motion Sensing and Enhanced Low-Grade Heat Harvesting

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