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Zmozinski AV, S Peres R, Macedo AJ, Mendes Becker E, Pasinato Napp A, Schneider R, Reisdörfer Silveira J, Ferreira CA, H Vainstein M, Schrank A. Silicone-geranium essential oil blend for long-term antifouling coatings. BIOFOULING 2024; 40:209-222. [PMID: 38500010 DOI: 10.1080/08927014.2024.2328611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/05/2024] [Indexed: 03/20/2024]
Abstract
This study explores the potential of geranium essential oil as a natural solution for combating marine biofouling, addressing the environmental concerns associated with commercial antifouling coatings. Compounds with bactericidal activities were identified by 13Carbon nuclear magnetic resonance (13C NMR). Thermogravimetric analysis (TGA) revealed minimal impact on film thermal stability, maintaining suitability for antifouling applications. The addition of essential oil induced changes in the morphology of the film and Fourier transform infrared spectroscopy (FTIR) analysis indicated that oil remained within the film. Optical microscopy showed an increase in coating porosity after immersion in a marine environment. A total of 18 bacterial colonies were isolated, with Psychrobacter adeliensis and Shewanella algidipiscicola being the predominant biofilm-forming species. The geranium essential oil-based coating demonstrated the ability to reduce the formation of Psychrobacter adeliensis biofilms and effectively inhibit macrofouling adhesion for a duration of 11 months.
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Affiliation(s)
- Ariane V Zmozinski
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
| | - Rafael S Peres
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul - IFRS, Porto Alegre, Brazil
| | - Alexandre José Macedo
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Emilene Mendes Becker
- Departamento de Química Inorgânica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Amanda Pasinato Napp
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
| | - Rafael Schneider
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
| | - Jade Reisdörfer Silveira
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul - IFRS, Porto Alegre, Brazil
| | - Carlos Arthur Ferreira
- LAPOL/PPGE3M - Laboratório de Materiais Poliméricos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Marilene H Vainstein
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
- Departamento de Biologia Molecular e Biotecnologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
| | - Augusto Schrank
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
- Departamento de Biologia Molecular e Biotecnologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
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Li M, Hu H, Zhang M, Ding H, Wen J, Xie L, Du P. Droplet Transportation on Liquid-Infused Asymmetrically Structured Surfaces by Mechanical Oscillation and Viscosity Control. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16315-16327. [PMID: 37881899 DOI: 10.1021/acs.langmuir.3c01884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
The transportation of droplets on solid surfaces has received significant attention owing to its importance in biochemical analysis and microfluidics. In this study, we propose a novel strategy for controlling droplet motion by combining an asymmetric structure and infused lubricating oil on a vibrating substrate. The transportation of droplets with volumes ranging from 10 to 90 μL was realized, and the movement speed could be adjusted from 1.45 to 10.87 mm/s. Typical droplet manipulations, including droplet transportation along a long trajectory and selective movement of multiple droplets, were successfully demonstrated. Through experimental exploration and theoretical analysis, we showed that the adjustment of droplet transport velocity involves an intricate interaction among the Ohnesorge number, droplet volume, and input amplitude. It can potentially be used for the more complex manipulation of liquid droplets in microfluidic and biochemical analysis systems.
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Affiliation(s)
- Mingsheng Li
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Haibao Hu
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen; Sanhang Science & Technology Buliding, No. 45th, Gaoxin South ninth Road, Nanshan District, Shenzhen City, 518063, China
| | - Mengzhuo Zhang
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Haiyan Ding
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Jun Wen
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Luo Xie
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Peng Du
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
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Li H, Kang Y, Zhang B, Wu J, Hua X, Jiang K. Accurate Quantitation of the Phenyl Group in Methylphenylsilicone Oils by GPC-UV. Chromatographia 2023. [DOI: 10.1007/s10337-023-04248-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Preparation and Properties of Fluorosilicone Fouling-Release Coatings. Polymers (Basel) 2022; 14:polym14183804. [PMID: 36145949 PMCID: PMC9505747 DOI: 10.3390/polym14183804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
To improve the antifouling performance of silicone fouling-release coatings, some fluorosilicone and silicone fouling-release coatings were prepared and cured at room temperature with hydroxyl-terminated fluoropolysiloxane (FPS) or hydroxy-terminated polydimethylsiloxane (PDMS) as a film-forming resin, tetraethyl orthosilicate (TEOS) as a crosslinking agent, and dibutyltin dilaurate (DBTDL) as a catalyst. The chemical structure, surface morphology and roughness, tensile properties, and antifouling properties of the coating were studied by infrared spectroscopy, a laser confocal scanning microscope, contact angle measurement, tensile tests, and marine bacteria and benthic diatom attachment tests. The results showed that the FPS coatings were not only hydrophobic but also oleophobic, and the contact angles of the FPS coatings were larger than those of the PDMS coatings. The surface free energies of the FPS coatings were much lower than those of the PDMS coatings. Generally, the fluorine groups can improve the antifouling performance of the coating. Introducing nonreactive silicone oil into PDMS or FPS coatings can improve the antifouling performance of the coating to a certain extent. The prepared fluorosilicone fouling-release coatings showed good application prospects.
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Characterisation of carbon paste electrodes bulk-modified with surfactants for measurements in nonaqueous media. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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The structure and properties of water-based silicone blended phenolic resin and its application in oil filter paper-based materials. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1073-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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