Sequential self-assembly and self-coacervation actuate water-triggered robust bonding: From universal underwater adhesion to on-demand detachable bioadhesion

Zhou, Manhua; Luo, Qiong; Li, Jichang; Yu, Gang; Peng, Junbo; Cao, Yong; Wang, Jianfeng; Wang, Wanjie; Yang, Yanyu

doi:10.1016/j.cej.2023.142436

Cited by 6 publications

(2 citation statements)

References 54 publications

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“…4i displays that various substrates bonded underwater with OUA-50 could lift a weight of 2.7 kg after only 10 min of curing (adhesion area: 2 cm × 1 cm), highlighting its rapid and strong underwater adhesion to diverse materials. Table S7 (Supporting Information); and Figure 4j, when compared with other underwater adhesives reported in literatures, [4][5][6]11,15,27,31,45,[55][56][57][58] indicate that the adhesive strength of OUA-50 to steel or iron surpasses most others. This superior performance is attributed to the ability of OUA-50 to repel the hydration layer and firmly contact the substrate surface, thereby establishing various interactions.…”

Section: Underwater Properties Of Oua-50mentioning

confidence: 77%

“…Underwater adhesives play a crucial role in a wide range of applications, from everyday life to industrial uses. [1][2][3][4][5][6] We conducted a systematic comparison of OUA-50 with other highly rated underwater adhesives from literature, [5,11,31,45,[56][57][58] considering aspects such as ease of preparation, curing time, substrate diversity, adhesive strength, environmental adaptability, and long-term stability (Figure 6a; and Table S8, Supporting Information). As illustrated in the radar chart, OUA-50 demonstrates comprehensive and exceptional underwater adhesion performance, showcasing its vast potential for widespread underwater applications.…”

Section: Underwater Applications Of Oua-50mentioning

confidence: 99%

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Sterically Hindered Oleogel‐Based Underwater Adhesive Enabled by Mesh‐Tailoring Strategy

Zhang,

Zhang

et al. 2024

Advanced Materials

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Underwater adhesives hold significant relevance in daily life and numerous industrial applications. Despite considerable efforts, developing scalable, high‐performance underwater adhesives through a simple and effective method remains a formidable challenge. This study presents a novel mesh‐tailoring strategy for in situ, rapid, and ultrastrong oleogel‐based underwater adhesives (OUA), which comprises a highly crosslinked polyurethane network with a matching mesh size (∼2.22 nm) that precisely entraps bio‐based epoxidized soybean oil (ESO) molecules (∼2.31 nm) by steric hindrance effect. This oleogel exhibits unprecedented robust mechanical properties (∼35 MPa) and maintains stability under extreme conditions, including high temperatures (100 °C), high pressures (30 MPa), and immersion in various solvents (water, ethanol, or ESO). In particular, this oleogel displays high hydrophobicity, rapid curing, and strong interface affinity, resulting in ultrahigh underwater adhesion strength (up to 2.13 MPa) and exceptional substrate universality. Moreover, the remarkable environmental adaptability and stability of OUA enable its use in harsh aqueous environments, including acidic/alkaline, saline, and extreme temperature solutions. The comprehensive capabilities of the OUA underscore its potential for building underwater structures, repairing leaky containers, and sealing broken submarine pipelines. This research establishes the foundation for the designing of next‐generation underwater adhesives and offers fresh perspectives for exploring oleogel‐based materials.This article is protected by copyright. All rights reserved

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Section: Underwater Properties Of Oua-50mentioning

confidence: 77%

Section: Underwater Applications Of Oua-50mentioning

confidence: 99%

Sterically Hindered Oleogel‐Based Underwater Adhesive Enabled by Mesh‐Tailoring Strategy

Zhang,

Zhang

et al. 2024

Advanced Materials

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Janus Hydrophobic Structural Gel with Asymmetric Adhesion in Air/Underwater for Reliable Mechanosensing

Zhou,

Jin,

Zeng

et al. 2024

Adv Funct Materials

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Reliable interfacial bonding is an essential guarantee that flexible electronics can output realistic signals, especially for underwater scenes. However, conventional self‐adhesive materials usually suffer from underwater adhesion failure, conflict between adhesion and cohesion, as well as adverse effects of isotropous adhesion and residue, greatly limiting their applications in flexible electronics. Herein, a Janus hydrophobic structural gel (HSG) with asymmetric adhesion is fabricated by a “grafting one twig on another” approach (in situ constructing a hydrophobic anti‐adhesive gel on the top of a hydrophobic self‐adhesive gel). The hydrophobic adhesion layer with long C18 aliphatic chains achieves a reliable underwater bonding (interfacial toughness exceeds 80 J m−2) with the assistance of high mobility of polymer chains, multiple interfacial interactions, and effective removal of interfacial liquid. The hydrophobic anti‐adhesion layer containing poly(ionic liquid) is more robust due to electrostatic and ion‐dipole interactions, ensuring the mechanical strength of the integral HSG. Such asymmetric heterostructure avoids common nonessential adhesion and residue, facilitating operation. The intrinsic hydrophobicity of HSG also prevents water erosion, achieving reliable underwater adhesion and sensing. As a result, the assembled sensor based on HSG can stably monitor human motions and wirelessly transmit underwater information, exhibiting an enormous potential in wearable electronics.

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Fully Recycled Polyolefin Elastomer‐Based Vitrimers with Ultra‐High, Universal, Stable, and Switchable Adhesion

Liu,

Wang,

Chen

2024

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Achieving both robust adhesion to arbitrary surfaces and thermal‐switchable/recyclable properties has proven challenging, particularly for commodity polyolefins. Herein, a simple and effective route is reported to transform polyolefins elastomer (POE) into a fully recycled epoxy‐functionalized POE vitrimers (E‐POE vit) with ultra‐high, universal, stable, and switchable adhesion via facile free radical grafting and dynamic cross‐linking. The resultant E‐POE vit exhibits increase in adhesion strength on glass exceeding three to ten times compared to those commonly used polymers, due to the synergy of dense hydrogen (H)‐bonds and strong interfacial affinity. In addition, E‐POE vit also displays strong adhesion on diverse surfaces ranging from inorganic to organic while maintaining good stability in various harsh environments. More importantly, temperature‐sensitive H‐bonds allow E‐POE vit to switch between attachment‐detachment at alternating temperatures, resulting in reversible adhesion without adhesion loss, even after 10 cycles. Moreover, E‐POE vit is able to be fully recycled and reused more than ten times via thermo‐activated transesterification reactions with negligible change in structure and performance. This work may unlock strategies to fabricate high‐performance commercial polymer‐based adhesives with adhesion and recyclable features for intelligent and sustainable applications.

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Sequential self-assembly and self-coacervation actuate water-triggered robust bonding: From universal underwater adhesion to on-demand detachable bioadhesion

Cited by 6 publications

References 54 publications

Sterically Hindered Oleogel‐Based Underwater Adhesive Enabled by Mesh‐Tailoring Strategy

Sterically Hindered Oleogel‐Based Underwater Adhesive Enabled by Mesh‐Tailoring Strategy

Janus Hydrophobic Structural Gel with Asymmetric Adhesion in Air/Underwater for Reliable Mechanosensing

Fully Recycled Polyolefin Elastomer‐Based Vitrimers with Ultra‐High, Universal, Stable, and Switchable Adhesion

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