Tough, Long-Term, Water-Resistant, and Underwater Adhesion of Low-Molecular-Weight Supramolecular Adhesives

Li, Xing; Deng, Yan; Lai, Jinlei; Zhao, Gai; Dong, Shengyi

doi:10.1021/jacs.0c00520

Cited by 203 publications

(208 citation statements)

References 48 publications

(117 reference statements)

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“…Recyclable adhesion performances were also realized by acid-sugar adhesive materials. [7][8][9] Quantitative tests were performed to measure the adhesion strengths of acid-sugar adhesive materials on different surfaces and under different conditions (temperature), and to find the relationship between adhesive composition and adhesion effect ( Figure 2). The shear strengths on glass surfaces are all higher than 1.10 MPa for all acid-sugar adhesive materials, with malic acid Ultrastrong adhesion effects were obtained between acid-sugar adhesives and steel surfaces.…”

Section: Resultsmentioning

confidence: 99%

“…9 Density functional theory (DFT) simulations clearly revealed the three-dimensional networks of hydrogen bonding in acid-sugar complexes (Figure 3a and Supporting Information Figure S91) which drive the supramolecular polymerization between sugars and acids. 8,9 Owing to the cross-linked polymeric structures and the high density of hydrogen-bonding networks, acid-sugar complexes can strongly bond to hydrophilic surfaces. With the adhesion behavior of MF on glass surface as an example, multiple hydrogen bonds were observed between MF and the glass surface (Figures 3b and 3c).…”

Section: Resultsmentioning

confidence: 99%

“…4,5 Supramolecular polymer structures and hydrogen bond formation give rise to the cohesive and adhesive properties. [6][7][8][9] However, water can be easily removed from the sugar-water supramolecular polymeric systems during the practical adhesion process, thus leading to a significant attenuation of adhesion strength or adhesion effect. 10,11 With the rapid development of artificial polymeric adhesives in the past century, natural adhesives were no longer the research focus of modern adhesives.…”

Section: Introductionmentioning

confidence: 99%

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Supramolecular Adhesive Materials from Natural Acids and Sugars with Tough and Organic Solvent-Resistant Adhesion

Cai

et al. 2021

CCS Chem

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Natural adhesives have been widely replaced by industrial adhesives made from petroleum-based products. Compared with that of traditional natural adhesives, modern industrial adhesives show improved adhesion performance. However, the drawbacks of modern adhesives, including toxicity and nonbiodegradability, drive the need for new and high-performance adhesive materials from renewable and biocompatible natural feedstock. In this study, a new family of acid-sugar adhesive materials exhibiting excellent and long-term adhesion effects was developed inspired by the concept of deep eutectic solvents (DESs). The supramolecular polymerization between natural sugars and acids gave rise to both strong cohesion and adhesion properties. Moreover, high resistance to organic solvents is an advantage of acid-sugar supramolecular adhesive materials. This study not only dramatically expands the applications of DESs but also sheds light on the development of supramolecular adhesive materials as promising alternatives to polymeric adhesives.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Supramolecular Adhesive Materials from Natural Acids and Sugars with Tough and Organic Solvent-Resistant Adhesion

Cai

et al. 2021

CCS Chem

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“…Recently, extensive efforts have been expanded to enhance the performance of PSAs for both mechanical properties and stretchability simultaneously by the introduction of dynamic networks as energy-dissipating sacrificial linkages. The prevalent approaches for developing dynamic networks include dynamic noncovalent bonds (hydrogen 11,15 or coordinate bonds 19 ), dynamic covalent chemistry, [20][21][22][23] supramolecular interaction, [24][25][26][27][28][29][30] and double or triple networks. [31][32][33][34][35] In particular, supramolecular polymers are frequently applied to PSAs because of their stimuli-responsive characteristics, which should display a combination of both high fluidity and cohesive strength in the bonding and debonding processes.…”

Section: Introductionmentioning

confidence: 99%

Robust and recoverable dual cross‐linking networks in pressure‐sensitive adhesives

Kim

Song

Choi

et al. 2020

Journal of Polymer Science

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Pressure-sensitive adhesives (PSAs) demand the ability to simultaneously improve toughness and adhesion. However, these requirements of PSAs have remained a great challenge because robust and recoverable characteristics are usually contradictory properties of PSAs. Dual cross-linking networks developed by incorporating dynamic noncovalent bonds into chemical cross-linking networks have the potential to mitigate these requirements in a wide variety of applications including adhesives, hydrogels, and elastomers. Herein, a facile approach to achieve dual cross-linking networks of acrylic PSAs with excellent mechanical properties and high-adhesive performance that integrate physically cross-linked networks into chemically cross-linked networks is proposed. Diurethane acrylic monomer-pentaerythritol ethoxylate (DAM-PEEL) groups were introduced into the acrylic PSA system through photopolymerization. The PSA/DAM-PEEL dual cross-linking networks led to the development of the chemically cross-linked networks for both PSA and DAM via covalent bonds and the physically cross-linked networks between the amide groups of DAM and the hydroxyl groups of PEEL via hydrogen bonds. Consequently, the PSA/DAM-PEEL dual cross-linking networks were able to simultaneously improve the modulus and stretchability. This design strategy for developing dual cross-linking networks of materials could offer potential applications for various adhesive-related applications.

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“…Adhesives are used ubiquitously in our daily life and industrial fields due to their ability to easily bond substrates without serious damage, ranging from sticky tapes for temporal bonding to "superglues" for permanent fixing. [1][2][3][4] Permanent adhesives enable high-strength bonding via the transition of their states from liquid to solid and, in most cases, debonding is not expected. In contrast, temporal adhesives generally realize adhesion based on their intrinsic viscoelastic properties, while high bonding strength, on-demand debonding and easy release are all desirable properties for practical applications.…”

mentioning

confidence: 99%

Substrate‐Independent, Reversible, and Easy‐Release Ionogel Adhesives with High Bonding Strength

Zhu

Lū

Zhang

et al. 2020

Macromol. Rapid Commun.

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structures to enhance the van der Waals interactions with the substrate. [5-7] Reversible and stimuli-responsive adhesives can also be fabricated based on stimuliresponsive polymers or polymer systems involving reversible and dynamic molecular interactions, such as the introduction of temperature or light isomerization groups, [8-10] dynamic covalent bonds [11,12] (e.g., Diels-Alder reaction, disulfide bonds) and reversible noncovalent interactions [13-20] (e.g., hydrogen bonds, metal-ligand and host-gust interactions). However, these adhesives were mostly reported to exhibit high-performance bonding with high-surface-energy substrates, such as glass and metal. The adhesion of inert low-surface-energy substrates, typically exampled by polytetrafluoretyhylene (PTFE), has been a long-standing challenge, because such substrates resist wetting and possess limited functional groups to form interfacial interactions with the adhesives. [21] Therefore, it is still highly desirable to develop substrate-independent, reversible and easyrelease temporal adhesives with high bonding strength. For the temporal adhesives that bond substrates based on their intrinsic viscoelastic properties, the bonding performance depends on both the adhesive and cohesive strength. [22-28] The adhesive strength is determined by the wetting ability of the adhesive and the interfacial interactions between the adhesive and substrates, whereas the cohesive strength depends on the mechanical rigidity of the adhesive. [26-28] Therefore, the adhesive with higher cohesive strength should be more solid-like with lower deformability, which, however, would prevent the wetting of the substrates by the adhesive and in turn may result in lower bonding performance. Conversely, the adhesives with higher adhesive strength should be more fluid-like with higher deformability, which would result in lower cohesive strength and thus may lower the bonding performance as well. Therefore, it is a big challenge to optimize the viscoelastic properties of a temporal adhesive to balance the adhesive and cohesive strength to maximize the bonding performance. Herein, taking advantages of the good wetting ability and nonvolatility of ionic liquids (IL), [29-31] ionogel adhesives are prepared by blending an imidazolium-based IL with a copolymer bearing charged quaternary amine groups. Homogeneous and stable ionogels can be obtained due to the electrostatic interactions between the charged moieties of the IL and the copolymer. The IL can promote the continuous contact between the

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Tough, Long-Term, Water-Resistant, and Underwater Adhesion of Low-Molecular-Weight Supramolecular Adhesives

Cited by 203 publications

References 48 publications

Supramolecular Adhesive Materials from Natural Acids and Sugars with Tough and Organic Solvent-Resistant Adhesion

Supramolecular Adhesive Materials from Natural Acids and Sugars with Tough and Organic Solvent-Resistant Adhesion

Robust and recoverable dual cross‐linking networks in pressure‐sensitive adhesives

Substrate‐Independent, Reversible, and Easy‐Release Ionogel Adhesives with High Bonding Strength

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