Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties
Superhydrophobicity is a well-known wetting phenomenon found in numerous plants and insects. It is achieved by the combination of the surface's chemical properties and its surface roughness. Inspired by nature, numerous synthetic superhydrophobic surfaces have been developed for various applica...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Materials Today Bio |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590006422003143 |
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| author | Elena Prudnikov Iryna Polishchuk Andy Sand Hanan Abu Hamad Naama Massad-Ivanir Ester Segal Boaz Pokroy |
| author_facet | Elena Prudnikov Iryna Polishchuk Andy Sand Hanan Abu Hamad Naama Massad-Ivanir Ester Segal Boaz Pokroy |
| author_sort | Elena Prudnikov |
| collection | DOAJ |
| description | Superhydrophobicity is a well-known wetting phenomenon found in numerous plants and insects. It is achieved by the combination of the surface's chemical properties and its surface roughness. Inspired by nature, numerous synthetic superhydrophobic surfaces have been developed for various applications. Designated surface coating is one of the fabrication routes to achieve the superhydrophobicity. Yet, many of these coatings, such as fluorine-based formulations, may pose severe health and environmental risks, limiting their applicability. Herein, we present a new family of superhydrophobic coatings comprised of natural saturated fatty acids, which are not only a part of our daily diet, but can be produced from renewable feedstock, providing a safe and sustainable alternative to the existing state-of-the-art. These crystalline coatings are readily fabricated via single-step deposition routes, namely thermal deposition or spray-coating. The fatty acids self-assemble into highly hierarchical crystalline structures exhibiting a water contact angle of ∼165° and contact angle hysteresis lower than 6°, while their properties and morphology depend on the specific fatty acid used as well as on the deposition technique. Moreover, the fatty acid coatings demonstrate excellent thermal stability. Importantly, this new family of coatings displays excellent anti-biofouling and antimicrobial properties against Escherichia coli and Listeria innocua, used as relevant model Gram-negative and Gram-positive bacteria, respectively. These multifunctional coatings hold immense potential for application in numerous fields, ranging from food safety to biomedicine, offering sustainable and safe solutions. |
| first_indexed | 2024-04-10T18:54:55Z |
| format | Article |
| id | doaj.art-a1ae009173e0470c9b6c284fbc0e5426 |
| institution | Directory Open Access Journal |
| issn | 2590-0064 |
| language | English |
| last_indexed | 2024-04-10T18:54:55Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials Today Bio |
| spelling | doaj.art-a1ae009173e0470c9b6c284fbc0e54262023-02-01T04:27:19ZengElsevierMaterials Today Bio2590-00642023-02-0118100516Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial propertiesElena Prudnikov0Iryna Polishchuk1Andy Sand2Hanan Abu Hamad3Naama Massad-Ivanir4Ester Segal5Boaz Pokroy6Department of Materials Science and Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, IsraelDepartment of Materials Science and Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, IsraelFaculty of Biotechnology and Food Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, IsraelFaculty of Biotechnology and Food Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, IsraelFaculty of Biotechnology and Food Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, IsraelFaculty of Biotechnology and Food Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, Israel; Corresponding author.Department of Materials Science and Engineering, Technion − Israel Institute of Technology, 3200003 Haifa, Israel; Corresponding author.Superhydrophobicity is a well-known wetting phenomenon found in numerous plants and insects. It is achieved by the combination of the surface's chemical properties and its surface roughness. Inspired by nature, numerous synthetic superhydrophobic surfaces have been developed for various applications. Designated surface coating is one of the fabrication routes to achieve the superhydrophobicity. Yet, many of these coatings, such as fluorine-based formulations, may pose severe health and environmental risks, limiting their applicability. Herein, we present a new family of superhydrophobic coatings comprised of natural saturated fatty acids, which are not only a part of our daily diet, but can be produced from renewable feedstock, providing a safe and sustainable alternative to the existing state-of-the-art. These crystalline coatings are readily fabricated via single-step deposition routes, namely thermal deposition or spray-coating. The fatty acids self-assemble into highly hierarchical crystalline structures exhibiting a water contact angle of ∼165° and contact angle hysteresis lower than 6°, while their properties and morphology depend on the specific fatty acid used as well as on the deposition technique. Moreover, the fatty acid coatings demonstrate excellent thermal stability. Importantly, this new family of coatings displays excellent anti-biofouling and antimicrobial properties against Escherichia coli and Listeria innocua, used as relevant model Gram-negative and Gram-positive bacteria, respectively. These multifunctional coatings hold immense potential for application in numerous fields, ranging from food safety to biomedicine, offering sustainable and safe solutions.http://www.sciencedirect.com/science/article/pii/S2590006422003143Superhydrophobic coatingsSaturated fatty acidsThermal depositionSpray coatingAntimicrobialAnti-biofouling |
| spellingShingle | Elena Prudnikov Iryna Polishchuk Andy Sand Hanan Abu Hamad Naama Massad-Ivanir Ester Segal Boaz Pokroy Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties Materials Today Bio Superhydrophobic coatings Saturated fatty acids Thermal deposition Spray coating Antimicrobial Anti-biofouling |
| title | Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties |
| title_full | Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties |
| title_fullStr | Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties |
| title_full_unstemmed | Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties |
| title_short | Self-assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties |
| title_sort | self assembled fatty acid crystalline coatings display superhydrophobic antimicrobial properties |
| topic | Superhydrophobic coatings Saturated fatty acids Thermal deposition Spray coating Antimicrobial Anti-biofouling |
| url | http://www.sciencedirect.com/science/article/pii/S2590006422003143 |
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