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Antifouling mechanism of natural product-based coatings investigated by digital holographic microscopy
- Source :
- Journal of Materials Science & Technology. 84:200-207
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Using natural product-based antifouling coatings has proven to be an effective strategy to combat biofouling. However, their antifouling mechanisms are still unclear. In this study, the antifouling mechanism of natural product-based coatings consisting of bio-sourced poly(lactic acid)-based polyurethane and eco-friendly antifoulant (butenolide) derived from marine bacteria was revealed by observing 3D bacterial motions utilizing a 3D tracking technique-digital holographic microscopy (DHM). As butenolide content increases, the density of planktonic marine bacteria (Pseudomonas sp.) near the surface decreases and thus leads to a reduced adhesion, indicating that butenolide elicits the adaptive response of Pseudomonas sp. to escape from the surface. Meanwhile, among these remained cells, an increased percentage is found to undergo subdiffusive motions compared with the case of smaller dose of butenolide. Further experiments show that butenolide can accelerate their swimming velocity and reduce flick frequency. Antibacterial assay confirms that butenolide-based coating shows high efficacy of antifouling performance against Pseudomonas sp. but without killing them like 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT).
- Subjects :
- Materials science
Polymers and Plastics
02 engineering and technology
engineering.material
010402 general chemistry
01 natural sciences
Biofouling
chemistry.chemical_compound
Marine bacteriophage
Coating
Materials Chemistry
Butenolide
Natural product
biology
Mechanical Engineering
Pseudomonas
Metals and Alloys
Adhesion
021001 nanoscience & nanotechnology
biology.organism_classification
Biodegradable polymer
0104 chemical sciences
chemistry
Chemical engineering
Mechanics of Materials
Ceramics and Composites
engineering
0210 nano-technology
Subjects
Details
- ISSN :
- 10050302
- Volume :
- 84
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science & Technology
- Accession number :
- edsair.doi...........da5dacf15bba4247fc7f974ba21a0e13