Adhesives, Sealants, and Coatings for Space and Harsh Environments

Lee, Lieng‐Huang

doi:10.1007/978-1-4613-1047-1_2

Cited by 16 publications

(7 citation statements)

References 65 publications

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“…Robust and durable wet polymer adhesives have received continually increased attention and have been applied in a wide range of fields such as biomedical materials for wound dressing, , dental restoration, , sustainable sealants for under seawater pipeline repair, , and various functional coatings for surface modification. − Under physiological and seawater environments, hydrated salt ions are able to form a tightly bound hydration layer on the substrate surface, which is regarded as a physical barrier to the adhesives and adhesive coatings. This barrier can tremendously undermine the adhesion forces and even result in adhesion failure when the adhesive materials are attempted to adhere to the wet surfaces. , Therefore, up to date, the great challenge for developing biomimetic underwater adhesive materials is still how to displace or evict the hydration layer for achieving strong and durable adhesion under practical aqueous conditions (e.g., physiological environment and seawater).…”

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Tough and Alkaline-Resistant Mussel-Inspired Wet Adhesion with Surface Salt Displacement via Polydopamine/Amine Synergy

Zhang

et al. 2019

Langmuir

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The mussel-inspired catechol-based strategy has been well recognized as a promising alternative to design and exploit new generation adhesive materials applicable in many fields, ranging from biomedical adhesives to coatings of biomedical devices and engineering applications. However, in situ achievement of tough adhesion capability to substrate surfaces (e.g., minerals) is severely limited under the physiological environment or seawater condition (namely, relatively high salinity and mild alkalinity). In this work, a facile and versatile approach is proposed to in situ achieve robust wet adhesion in aqueous solutions of high salinity and mild alkalinity, via integrating primary amines into mussel-inspired polydopamine (PDA). By using a surface forces apparatus (SFA), the corresponding interaction behaviors have been systematically investigated. The strong wet adhesion was demonstrated and achieved via a synergetic effect of amine and PDA to the wet surfaces, including the surface salt displacement assisted by primary amine, strong adhesion to substrates facilitated by the catechol groups on PDA moieties, and enhanced cohesion through their cation−π interactions. Our results provide useful insights into the design and development of highperformance underwater adhesives and water-resistance materials.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Tough and Alkaline-Resistant Mussel-Inspired Wet Adhesion with Surface Salt Displacement via Polydopamine/Amine Synergy

Zhang

et al. 2019

Langmuir

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“…Mussel-inspired wet adhesion strategies to functionalize material surfaces have attracted great attention and been widely applied in different areas including wound dressing, dental restoration, biosensor, bone tissue engineering, and under-seawater pipeline repair . In general, dopamine, a catecholamine compound that mimics mussel foot proteins (Mfps), can readily self-polymerize in weak alkaline solutions to form polydopamine (PDA) coatings on virtually all kinds of material surfaces. − Although PDA modification has exhibited great success in modulating the surface properties of a wide range of materials, it still suffers from some deficiencies, including relatively low stability, deep coloration of PDA coatings, and high cost of DA monomer, which are possible impediments for its wide practical applications. − To address the aforementioned shortcomings of PDA coatings, a low-cost plant polyphenol named tannic acid (TA) has been exploited as a potential building block for functionalizing the surfaces of different materials due to its structure resemblance to DA .…”

Section: Introductionmentioning

confidence: 99%

Probing the Interaction Forces of Phenol/Amine Deposition in Wet Adhesion: Impact of Phenol/Amine Mass Ratio and Surface Properties

Zhang

Gong

et al. 2019

Langmuir

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Mussel-inspired phenol/amine deposition in wet adhesion provides a cost-effective strategy to readily fabricate functional coatings for a wide range of applications. The adhesion of phenol/amine to different substrates and the cohesion between phenol/amine are believed to play critical roles during the deposition process. However, the understanding on the correlation between the deposition capability and interaction behavior involved in the coating formation still remains incomplete, which limits further developing phenol/amine-based functional materials and coatings. In this work, we correlated the interaction forces between two phenol/amine coatings and between phenol/amine coating and different substrate surfaces with the deposition capability of phenol/amine using surface forces apparatus and atomic force microscopy. The mass ratio of phenol and amine was found to significantly influence the deposition behavior through regulating the surface properties of phenol/amine aggregates’ cohesion strength between phenol/amine coatings. Furthermore, the strong adhesion measured between phenol/amine coating and substrates with varying surface chemistry was demonstrated to be able to effectively initiate the surface-independent phenol/amine deposition as well as the continuous growth of phenol/amine coatings. This work provides useful insights into the fundamental understanding of the interactions and deposition mechanism during phenol/amine deposition process, with implications for developing advanced phenol/amine-based coating materials for a wider range of applications.

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“…PDMS based sensors can be useful in harsh environments due to their stable chemical properties. 36 – 38 Transmission of light of a desired wavelength could be achieved by an appropriate concentration of a doping dye, PDMS is a non-toxic and inert silicon-based organic polymer capable of replicating 3D structures in microscale 39 and has been a popular choice for soft lithography due to its robust nature, low cost and ease of fabrication to replicate microscale structures. 33 As compared to traditional etching and bonding approaches, PDMS microfabrication is rapid and simple.…”

Section: Introductionmentioning

confidence: 99%