Sediment challenge to promising ultra-low fouling hydrophilic surfaces in the marine environment

Koc, Julian; Simovich, Tomer; Schönemann, Eric; Chilkoti, Ashutosh; Gardner, Harrison; Swain, Geoffrey; Hunsucker, Kelli Z.; Laschewsky, André; Rosenhahn, Axel

doi:10.1080/08927014.2019.1611790

Cited by 33 publications

(56 citation statements)

References 28 publications

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“…Such coatings are known for their excellent antifouling properties under laboratory conditions but fail in natural conditions due to silt accumulation. 46 In contrast to low silt accumulation of the hybrid materials in this study, the UV-Vis absorbance of the previously tested photo-crosslinked PSPE coatings increased up to 13.2-fold after immersion into a silt suspension.…”

Section: Dynamic Field Assay and Silt Accumulationcontrasting

confidence: 58%

Sol–Gel-Based Hybrid Materials as Antifouling and Fouling-Release Coatings for Marine Applications

Wanka

Koc

Clarke

et al. 2020

ACS Appl. Mater. Interfaces

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Hybrid materials (HMs) offer unique properties as they combine inorganic and organic components into a single material. Here we developed HM coatings for marine antifouling applications using sol-gel chemistry and naturally occurring polysaccharides. The coatings were characterized by spectroscopic ellipsometry, contact angle goniometry, AFM, ATR-FTIR, and their stability was tested in saline media. Marine antifouling and fouling-release properties were tested in laboratory assays against the settlement of larvae of the barnacle Balanus improvisus and against the settlement and removal of the diatom Navicula incerta. Furthermore, laboratory data were confirmed in short-term dynamic field assays in Florida, USA. All hybrid coatings revealed a superior performance in the assays compared to a hydrophobic reference. Within the hybrids, those with the highest degree of hydrophilicity and negative net charge across the surface performed best. Alginate and heparin showed good performance making these hybrid materials promising building blocks for fouling-resistant coatings.

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Section: Dynamic Field Assay and Silt Accumulationcontrasting

confidence: 58%

Sol–Gel-Based Hybrid Materials as Antifouling and Fouling-Release Coatings for Marine Applications

Wanka

Koc

Clarke

et al. 2020

ACS Appl. Mater. Interfaces

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“…Previous studies have shown that very soft and highly swollen hydrogels are prone to the accumulation of silt on which biomass can settle. [ 17 ] Also, low amounts of carboxybetaines in a DCPEA matrix were sufficient to strongly improve the marine antifouling properties of the purely hydrophobic parent coatings. [ 23 ] Similar observations were made for different hydrophilic functionalities, including zwitterionic ones, in a BMA‐dominated polymer matrix.…”

Section: Discussionmentioning

confidence: 99%

Low Fouling Polysulfobetaines with Variable Hydrophobic Content

Schardt

Guajardo

Koc

et al. 2021

Macromol. Rapid Commun.

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Amphiphilic polymer coatings combining hydrophilic elements, in particular zwitterionic groups, and hydrophobic elements comprise a promising strategy to decrease biofouling. However, the influence of the content of the hydrophobic component in zwitterionic coatings on the interfacial molecular reorganization dynamics and the anti-fouling performance is not well understood. Therefore, coatings of amphiphilic copolymers of sulfobetaine methacrylate 3-[N-2'-(methacryloyloxy)ethyl-N,N-dimethyl]-ammonio propane-1-sulfonate (SPE) are prepared which contain increasing amounts of hydrophobic n-butyl methacrylate (BMA). Their fouling resistance is compared to that of their homopolymers PSPE and PBMA. The photo-crosslinked coatings form hydrogel films with a hydrophilic surface. Fouling by the proteins fibrinogen and lysozyme as well as by the diatom Navicula perminuta and the green algae Ulva linza is assessed in laboratory assays. While biofouling is strongly reduced by all zwitterionic coatings, the best fouling resistance is obtained for the amphiphilic copolymers. Also in preliminary field tests, the anti-fouling performance of the amphiphilic copolymer films is superior to that of both homopolymers. When the coatings are exposed to a marine environment, the reduced susceptibility to silt incorporation, in particular compared to the most hydrophilic polyzwitterion PSPE, likely contributes to the improved fouling resistance.

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“…[ 67 ] But the antifouling effect of such coatings failed when performing field tests in the marine. [ 68 ] More detailed examinations revealed that the accumulated foulants in field tests were mainly composed of inorganic compounds and diatomaceous soil sediments. Further simulating field tests in the laboratory confirmed that inorganic particulate matter could accumulate on hydrophilic coatings and impair the antifouling performances in no more than 10 min (see Figure ).…”

Section: Biomimetic Antifouling Surface Technologiesmentioning

confidence: 99%

Section: Biomimetic Antifouling Surface Technologiesmentioning

confidence: 99%

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Recent Progress of Biomimetic Antifouling Surfaces in Marine

Yan

et al. 2020

Adv Materials Inter

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2000966 (4 of 18) www.advmatinterfaces.de Figure 9. a) Experimental results of biofilm streamers expanded rapidly and caused clogging over a short time. Reproduced with permission. [154] Copyright 2013, National Academy of Sciences. b) Under no-flow conditions, the bacteria exhibited circular swimming trajectories, and when the flow was changed to a moderate shear rates, the bacteria quickly aligned facing upstream and swimming toward upstream continuously. Reproduced with permission. [151] Copyright 2012, Biophysical Society. c) Kymograph of microscope images of an attached bacterium moving against flow, and conceptual illustration showing the changes in the structure of pili for uncoiling and the two regimes in bacterial retraction. Reproduced with permission. [152]

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Sediment challenge to promising ultra-low fouling hydrophilic surfaces in the marine environment

Cited by 33 publications

References 28 publications

Sol–Gel-Based Hybrid Materials as Antifouling and Fouling-Release Coatings for Marine Applications

Sol–Gel-Based Hybrid Materials as Antifouling and Fouling-Release Coatings for Marine Applications

Low Fouling Polysulfobetaines with Variable Hydrophobic Content

Recent Progress of Biomimetic Antifouling Surfaces in Marine

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