Hydrophilic Self-Replenishing Coatings with Long-Term Water Stability for Anti-Fouling Applications

Jiménez-Pardo, Isabel; Ven, L.G.J. van der; Benthem, Rolf A. T. M. van; Esteves, A. Catarina C.

doi:10.20944/preprints201803.0114.v1

Cited by 7 publications

(3 citation statements)

References 38 publications

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“…Consequently, the diffusion coefficient decreases owing to the decrease in water uptake depending on the GO content of the cross-linking chains of the gel. [15] The main reason for the results of the experiment using Marmara Sea Water is the salinity of water, which affects the diffusion coefficient. The GO content and salinity of the water were influenced by the diffusion coefficients of the samples.…”

Section: Resultsmentioning

confidence: 99%

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Kinetics models for polyacrylamide‐graphene oxide composites as antifoulant

Osma

Pekcan

Evingür

2022

Polymer Engineering & Sci

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Antifouling paints are used to protect the surface against these organisms such as algae, sea squirts, and barnacles. According to previous research, fish and seaweeds do not adhere to submerged surfaces using wet and soft hydrogels. The aim of this study is to investigate the temperature effect on the performance of antifouling composites to develop new useful antifouling composites for shipping sector. In this swelling experiment, the behavior of hydrogels produced from polyacrylamide (PAAm) and graphene oxide (GO) was investigated at different temperatures. Free‐radical cross‐linking copolymerization formed composite, using acrylamide, ammonium persulfate, N, N′‐methylenebisacrylamide (BIS, Merck), and graphene oxide with various contents. The steady‐state fluorescence technique was used for studying the swelling of PAAm‐GO composites at various temperatures in pure water. When pyranine fluorescence intensity, I was measured, it decreased until swelling equilibrium was achieved. After the swelling experiment was started, the fluorescence emission (Iem) and scattering light intensities, Isc from different GO content hydrogels were observed by real‐time monitoring at various temperatures. Li‐Tanaka and Fickian models were used to determine the diffusion coefficients for the swelling experiments in distilled and Marmara Sea Water for 8 and 50 μl of GO content hydrogels, respectively. According to literature, PAAm is utilized as a surface coating material to reduce biofouling, for this reason, this research will show a way to be able to use PAAm inside antifouling paints material for the marine industry.

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Section: Resultsmentioning

confidence: 99%

“…For this reason, this relationship should be observed to affect the initial situation of the composite in time. [ 14 ]…”

Section: Resultsmentioning

confidence: 99%

Kinetics models for polyacrylamide‐graphene oxide composites as antifoulant

Osma

Pekcan

Evingür

2022

Polymer Engineering & Sci

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“…9 Hydrophilic treatments also have widespread applications in microfluidic and droplet technologies in applications ranging from greenhouse agriculture 10 to health care 11 and water treatment. 12 Several types of hydrophilic coatings or treatment processes are frequently used. For example, amphiphilic molecules such as poly(vinyl alcohol) (PVA) essentially convert hydrophobic surfaces to hydrophilic ones.…”

Section: ■ Introductionmentioning

confidence: 99%

Asphaltene-Derived Graphene Quantum Dots for Controllable Coatings on Glass, Fabrics, and Aerogels

Firouzi-Haji,

Aghajamali,

Hassanzadeh

et al. 2023

ACS Omega

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Fracture Mechanics Solutions for Interfacial Cracks between Compressible Thin Layers and Substrates

et al. 2019

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The decohesion of coatings, thin films, or layers used to protect or strengthen technological and structural components causes the loss of their functions. In this paper, analytical, computational, and semi-analytical 2D solutions are derived for the energy release rate and mode-mixity phase angle of an edge-delamination crack between a thin layer and an infinitely deep substrate. The thin layer is subjected to general edge loading: axial and shear forces and bending moment. The solutions are presented in terms of elementary crack tip loads and apply to a wide range of material combinations, with a large mismatch of the elastic constants (isotropic materials with Dundurs’ parameters − 1 ≤ α ≤ 1 and − 0.4 ≤ β ≤ 0.4 ). Results show that for stiff layers over soft substrates ( α → 1 ), the effects of material compressibility are weak, and the assumption of substrate incompressibility is accurate; for other combinations, including soft layers over stiff substrates ( α → − 1 ), the effects may be relevant and problem specific. The solutions are applicable to edge- and buckling-delamination of thin layers bonded to thick substrates, to mixed-mode fracture characterization test methods, and as benchmark cases.

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Hydrophilic Self-Replenishing Coatings with Long-Term Water Stability for Anti-Fouling Applications

Abstract: Hydrophilic coatings have recently emerged as a new approach to avoid the adhesion of 11 (bio)organisms on surfaces immersed in water. In these coatings the hydrophilic character is crucial 12for the anti-fouling (AF) performance. However, this property can be rapidly lost due to the

Cited by 7 publications

References 38 publications

Kinetics models for polyacrylamide‐graphene oxide composites as antifoulant

Kinetics models for polyacrylamide‐graphene oxide composites as antifoulant

Asphaltene-Derived Graphene Quantum Dots for Controllable Coatings on Glass, Fabrics, and Aerogels

Fracture Mechanics Solutions for Interfacial Cracks between Compressible Thin Layers and Substrates

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