Recent advances in wet adhesives: Adhesion mechanism, design principle and applications

Cui, Chunyan; Liu, Wenguang

doi:10.1016/j.progpolymsci.2021.101388

Cited by 309 publications

(251 citation statements)

References 248 publications

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“…However, suturing may cause tissue damage or scars at the fixing points and is difficult to apply to tissues with complex structures (e.g., spinal cord and heart). Recently, bio-adhesives have emerged as potential alternatives to sutures 3 – 6 , as they are biocompatible, nontoxic, and easy to use 7 , 8 . Depending on the formulation, bio-adhesives can be either glue-type 9 – 20 or tape-type 21 – 23 adhesives.…”

Section: Introductionmentioning

confidence: 99%

Hydrogel tapes for fault-tolerant strong wet adhesion

et al. 2021

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Fast and strong bio-adhesives are in high demand for many biomedical applications, including closing wounds in surgeries, fixing implantable devices, and haemostasis. However, most strong bio-adhesives rely on the instant formation of irreversible covalent crosslinks to provide strong surface binding. Repositioning misplaced adhesives during surgical operations may cause severe secondary damage to tissues. Here, we report hydrogel tapes that can form strong physical interactions with tissues in seconds and gradually form covalent bonds in hours. This timescale-dependent adhesion mechanism allows instant and robust wet adhesion to be combined with fault-tolerant convenient surgical operations. Specifically, inspired by the catechol chemistry discovered in mussel foot proteins, we develop an electrical oxidation approach to controllably oxidize catechol to catecholquinone, which reacts slowly with amino groups on the tissue surface. We demonstrate that the tapes show fast and reversible adhesion at the initial stage and ultrastrong adhesion after the formation of covalent linkages over hours for various tissues and electronic devices. Given that the hydrogel tapes are biocompatible, easy to use, and robust for bio-adhesion, we anticipate that they may find broad biomedical and clinical applications.

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Section: Introductionmentioning

confidence: 99%

Hydrogel tapes for fault-tolerant strong wet adhesion

et al. 2021

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“…65 There are some interaction forces involved in the observed adhesion phenomena such as chemical bonds, Coulomb forces, van der Waals forces, mechanical interlocking, diffusion, suction forces, etc. , 66–70 which are schematically shown in Fig. 2a.…”

Section: The Basics Of Surface Adhesionmentioning

confidence: 99%

Surface adhesion engineering for robust organic semiconductor devices

Wang

2022

J. Mater. Chem. C

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“…There are many recent review articles regarding joining techniques of same and dissimilar materials combining mechanical fastening, welding and the use of adhesives. The focus of these reviews is to describe the process of joining and their mechanical and physical properties via simulation and laboratory experiments [1,[14][15][16][17][18][19][20][21][22]. To the authors' knowledge, one topic that was not covered in significant detail is related to the use of adhesive in hybrid joints (combination of adhesive bonding with mechanical joining and welding processes).…”

Section: High-temperature Adhesives (Htas)mentioning

confidence: 99%

A Review of Structural Adhesive Joints in Hybrid Joining Processes

et al. 2021

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Hybrid joining (HJ) is the combination of two or more joining techniques to produce joints with enhanced properties in comparison to those obtained from their parent techniques. Their adoption is widespread (metal to metal joint, composite to composite and composite to metal) and is present in a vast range of applications including all industrial sectors, from automotive to aerospace, including naval, construction, mechanical and utilities. The objective of this literature review is to summarize the existing research on hybrid joining processes incorporating structural adhesives highlighting their field of application and to present the recent development in this field. To achieve this goal, the first part presents an introduction on the main class of adhesives, subdivided by their chemical nature (epoxy, polyurethane, acrylic and cyanoacrylate, anaerobic and high-temperature adhesives) The second part describes the most commonly used Hybrid Joining (HJ) techniques (mechanical fastening and adhesive bonding, welding processes and adhesive bonding) The third part of the review is about the application of adhesives in dependence of performance, advantage and disadvantage in the hybrid joining processes. Finally, conclusions and an outlook on critical challenges, future perspectives and research activities are summarized. It was concluded that the use of hybrid joining technology could be considered as a potential solution in various industries, in order to reduce the mass as well as the manufacturing cost.

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Recent advances in wet adhesives: Adhesion mechanism, design principle and applications

Cited by 309 publications

References 248 publications

Hydrogel tapes for fault-tolerant strong wet adhesion

Hydrogel tapes for fault-tolerant strong wet adhesion

Surface adhesion engineering for robust organic semiconductor devices

A Review of Structural Adhesive Joints in Hybrid Joining Processes

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