Amphiphilic Zwitterionic Acrylate/Methacrylate Copolymers for Marine Fouling-Release Coatings
Autor: | Axel Rosenhahn, Harrison Gardner, Robin Wanka, Lennart Sobota, Geoffrey Swain, Florian Koschitzki, Kelli Z. Hunsucker |
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Rok vydání: | 2021 |
Předmět: |
chemistry.chemical_classification
Acrylate 02 engineering and technology Surfaces and Interfaces Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Methacrylate 01 natural sciences 0104 chemical sciences Biofouling chemistry.chemical_compound Monomer chemistry Chemical engineering Amphiphile Electrochemistry Copolymer General Materials Science 0210 nano-technology Ethylene glycol Spectroscopy |
Zdroj: | Langmuir. 37:5591-5600 |
ISSN: | 1520-5827 0743-7463 |
Popis: | Methacrylate and acrylate monomers are popular building blocks for antifouling (AF) and fouling-release (FR) coatings to counteract marine biofouling. They are used in various combinations and often combined into amphiphilic materials. This study investigated the FR properties of amphiphilic ethylene glycol dicyclopentenyl ether acrylate (DCPEA) and the corresponding methacrylate (DCPEMA) blended with 5 wt % zwitterionic carboxybetaine acrylate (CBA) and the corresponding methacrylate (CBMA). A series of (co)polymers with different acrylate/methacrylate compositions were synthesized and tested against the attachment of the diatom Navicula perminuta and in short-term dynamic field exposure experiments. The more hydrophobic methacrylate DCPEMA homopolymer outperformed its acrylate counterpart DCPEA. Incorporated zwitterionic functionality of both CBMA and CBA imparted ultralow fouling capability in the amphiphilic polymers toward diatom attachment, whereas in the real ocean environment, only the employment of CBMA reduced marine biofouling. Moreover, it was observed that CBA-containing coatings showed different surface morphologies and roughnesses compared to the CBMA analogues. Particularly, a high impact was found when acrylic CBA was mixed with methacrylic DCPEMA. While the wettability of the coatings was comparable, investigated methacrylates in general exhibited superior fouling resistance compared to the acrylates. |
Databáze: | OpenAIRE |
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