Journal
ADVANCED MATERIALS TECHNOLOGIES
Volume 4, Issue 2, Pages -Publisher
WILEY
DOI: 10.1002/admt.201800480
Keywords
antiadhesion; bacteria; biofouling; bionic; silicone elastomers
Categories
Funding
- National Natural Science Foundation of China [51475203, 51875240]
- Pre-research Foundation of Equipment Field of China [61400040403]
- China Postdoctoral Science Foundation [2018M630324]
- Major Scientific and Technological Project of Changchun [17SS023]
- Special industrialization demonstration project new material special project of Jilin province [SXGJSF2017-3]
- school co-construction plan [SXGJSF2017-3]
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Inspired by the antifouling properties of soft coral surface, the antifouling film of graphene-silicone elastomers (GSE) composite materials are prepared and modified with a tentacle structure (TS-GSE). This antifouling coating has an adjusted elastic modulus, originally low surface energy, and strong electronegativity, and all these physical properties are a benefit to antifouling. The nonbactericidal film of TS-GSE can expel bacteria through physical interaction, and it is more effective than bactericidal coatings. Moreover, the elasticity deformation of SE is modeled by the standard k-epsilon turbulence model. Results indicate this elastic material has a harmonic motion effect through deformation under the fluid flow, and the response frequency is about 10 Hz. The harmonic motion effect makes the elastic surface unstable and provide a foul release basis. Bacteria attachment is tested under both static conditions and dynamic conditions, and results show that the antiadhesion coating of TS-GSE showed strong antiadhesion activity against both Gram-negative and Gram-positive bacteria. This work should not only enhance understanding of elastomers-based antifouling materials but also facilitate the design and construction of other types of nontoxic foul-release materials.
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