Effects of crosslink density in zwitterionic hydrogel coatings on their antifouling performance and susceptibility to silt uptake
| Autor: | Robin Wanka, Harrison Gardner, Nick Aldred, Axel Rosenhahn, Geoffrey Swain, Julian Koc, André Laschewsky, Eric Schönemann, Kelli Z. Hunsucker, Anthony S. Clare |
|---|---|
| Přispěvatelé: | Publica |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Biofouling Surface Properties Chemical structure 030106 microbiology macromolecular substances Aquatic Science Methacrylate Applied Microbiology and Biotechnology hydrogel film 03 medical and health sciences chemistry.chemical_compound Adsorption medicine Animals crosslinking Balanus improvisus Water Science and Technology chemistry.chemical_classification antifouling coating Thoracica technology industry and agriculture Hydrogels Polymer Quartz crystal microbalance swellability polyzwitterion 030104 developmental biology Monomer chemistry Chemical engineering Methacrylates Swelling medicine.symptom Navicula perminuta |
| DOI: | 10.6084/m9.figshare.12848639 |
| Popis: | Hydrogel coatings effectively reduce the attachment of proteins and organisms in laboratory assays, in particular when made from zwitterionic monomers. In field experiments with multiple species and non-living material, such coatings suffer from adsorption of particulate matter. In this study, the zwitterionic monomer 3-[N-(2-methacryloyloxyethyl)-N,N-dimethylammonio] propanesulfonate (SPE) was copolymerized with increasing amounts of the photo-crosslinker benzophenon-4-yloxyethyl methacrylate (BPEMA) to systematically alter the density of crosslinks between the polymer chains. The effect of increasing crosslink density on the antifouling (AF) performance of the coatings was investigated in laboratory assays and fields tests. In both cases, the AF performance was improved by increasing the crosslinker content. The coatings reduced protein, diatom, and barnacle accumulation, and showed better resistance to biomass accumulation. The findings underline that the marine AF performance of hydrogel coatings does not only depend on the specific chemical structure of the polymers, but also on their physico-chemical properties such as rigidity and swelling. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|