Functional Polymeric Materials Inspired by Geckos, Mussels, and Spider Silk

Włodarczyk‐Biegun, Małgorzata K.; Filippov, Alexei D.; Akerboom, Sabine; Dompè, Marco; Hees, Ilse A. van; Mocan, Merve; Kamperman, Marleen

doi:10.1002/macp.201800051

Cited by 5 publications

(2 citation statements)

References 103 publications

(182 reference statements)

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“…Moreover, these gecko-inspired adhesives are self-cleaning, which further extends its functionality. [75] In the aspect of geckoinspired coating for anticorrosion applications, there has been very few, if any, relevant reports; nevertheless, the enhanced adhesion and liquid repellency can be beneficial for anticorrosion applications.…”

Section: Nature-inspired Synthetic Coatings With Strong Interfacial Amentioning

confidence: 99%

Nature‐Inspired Strategy for Anticorrosion

Cui

Wang

2019

Adv Eng Mater

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Materials corrosion is a natural and ubiquitous interfacial process, but is essential to numerous industrial processes. Progress in industrial and material innovations is also marked by developments in search of new solutions to design materials with better anticorrosion activity and longer service lifetime. In particular, recent blossoming in biomimetics has provided remarkable inspirations to design new artificial, passive anticorrosion coatings which are environmentally benign and functional versatile. In this review, the authors first formulate three key design components that underlie the construction of an ideal protective coating, that is, the functional barrier at the coating surface, the transport control of corrosive substances inside the coating, as well as interfacial bonding between the passive coating and the substrate. Then, the authors take a parallel approach to elaborate inspirations from nature and review recent progress in mimicking nature. At last, the authors offer perspectives on the design and development of novel engineered, high-performance anticorrosion coatings.

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Section: Nature-inspired Synthetic Coatings With Strong Interfacial Amentioning

confidence: 99%

Nature‐Inspired Strategy for Anticorrosion

Cui

Wang

2019

Adv Eng Mater

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“…These motifs undergo reversible ring‐opening and ring‐closing reactions upon irradiation with UV and visible light, and can thus be switched between a neutral spiropyran and a zwitterionic merocyanine form . The significant change from a nonpolar to a zwitterionic species makes spiropyranes attractive as photoswitches for dry adhesive systems that predominantly rely on electrostatic forces . For example, a dry adhesive was prepared by incorporating a photoresponsive spiro‐compound (0.25 wt%) into “mushroom”‐shaped PDMS microstructures.…”

Section: On‐demand Debonding Based On Reversible Bondsmentioning

confidence: 99%

(De)bonding on Demand with Optically Switchable Adhesives

Hohl

Weder

2019

Advanced Optical Materials

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nature of polymer-based adhesives prevent their easy removal and stifle or complicate debonding, rebonding, (end-of-life) recycling, and repair. In this context, the development of debonding-on-demand (DoD) adhesive technologies is attracting rapidly growing interest. Indeed, DoD techniques have already entered commercial exploitation in applications such as easily removable wound dressings, [2,3] temporal fixation in semiconductor manufacturing, [4][5][6] and the repair, replacement, or recycling of components. [7][8][9] While many debonding technologies employ heat to reduce the adhesive strength by imparting physical property changes of the adhesive, [10][11][12][13][14] light-induced debonding technologies represent an emerging field and have been much less explored. Photoirradiation is an attractive alternative to thermal debonding as it allows an efficient, contactless, remote stimulation that can be temporally and spatially controlled. [15][16][17][18] Moreover, factors such as the irradiation wavelength, intensity, and time can easily be tuned and it is often possible to focus the energy entry to the adhesive and minimize or avoid exposure of (sensitive) substrates. Of course, the approach requires that at least one of the substrates to be bonded is sufficiently transparent.The design of a light-debondable adhesive system is strongly related to the adhesive type and the requirements imparted by the application(s) for which the adhesive is designed. For instance, pressure-sensitive adhesives (PSAs), such as used in adhesive tapes, need to efficiently adhere under ambient conditions with only a brief application of pressure, they should withstand the (comparably small) loads experienced while bonded, and they must also be easily removable, ideally without leaving any residues on the substrate. [19,20] PSAs are therefore normally based on lightly physically or chemically cross-linked rubbery polymers such as natural rubber, styrene butadiene block copolymers, and acrylics. These materials provide a balance between adhesive and cohesive performance, i.e., adequate stiffness and strength to resist deformation and cohesive failure, and appropriate elasticity in order to establish adequate contact with the substrate. [1] On the other hand, structural adhesives must be able to effectively transmit large loads across the bonded joint and the high strength and high rigidity required for this function are usually achieved by the formation of glassy networks. Examples of such materials include cross-linked epoxy resins, which may possess shear strengths of >35 MPa, cyanoacrylates (superglues), acrylics, and polyurethanes. [19] Adhesives that enable bonding and especially debonding on demand (DoD) have attracted rapidly growing interest in the last decade, as these capabilities greatly improve the functionality of adhesives, particularly in connection with temporal fixation, repair, and recycling. Indeed, DoD techniques have already entered commercial exploitation in applications such as easily removable wound dressin...

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