Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen
Superhydrophobic surfaces, known for their water-repellent, and self-cleaning properties, are widely used in various applications. These advanced functional surfaces exhibit high contact angles (>150°), achieved through low surface energy chemistries and hierarchical roughness. Natural sunflower...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2025
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| Online Access: | https://hdl.handle.net/10356/182490 |
| _version_ | 1826129107712212992 |
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| author | Li, Jian Deng, Jingyu Zhou, Chenchen Yang, Jueying Shin, Sungmin Binks, Bernard P. Cho, Nam-Joon |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Li, Jian Deng, Jingyu Zhou, Chenchen Yang, Jueying Shin, Sungmin Binks, Bernard P. Cho, Nam-Joon |
| author_sort | Li, Jian |
| collection | NTU |
| description | Superhydrophobic surfaces, known for their water-repellent, and self-cleaning properties, are widely used in various applications. These advanced functional surfaces exhibit high contact angles (>150°), achieved through low surface energy chemistries and hierarchical roughness. Natural sunflower pollen is micron-sized spherical particles with nano-sized spikes on the surface. This study engineered superhydrophobic coatings using the unique hierarchical structure of sunflower pollen and low surface energy additives like polydimethylsiloxane (PDMS) and silane additives such as 1H,1H,2H,2H-perfluorooctyltrichlorosilane (FTS), octadecyltrichlorosilane (OTS) and dichlorodimethylsilane (DCDMS). The pollen content significantly modulates surface structure, roughness, and water contact angle. Higher pollen content enhances roughness and water repellency by creating micro-nano hierarchical structures. Pollen-PDMS-FTS and Pollen-PDMS coatings demonstrated the highest water contact angles (165 ± 2° and 163 ± 3°, respectively) and lowest sliding angles (4.5 ± 1° and 7.6 ± 2.6°, respectively), achieving a "lotus effect." Conversely, Pollen-PDMS-OTS or Pollen-PDMS-DCDMS coatings resulted in high sliding angles and water adhesion, producing a "rose petal effect." These "lotus effect" coatings are effectively applied in self-cleaning and water displacement in oil pipelines on hilly terrain. This study provides insights into the interplay between hierarchical structure and surface-free energy for designing superhydrophobic surfaces tailored for specific applications. |
| first_indexed | 2025-03-09T15:00:28Z |
| format | Journal Article |
| id | ntu-10356/182490 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T15:00:28Z |
| publishDate | 2025 |
| record_format | dspace |
| spelling | ntu-10356/1824902025-02-04T07:52:23Z Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen Li, Jian Deng, Jingyu Zhou, Chenchen Yang, Jueying Shin, Sungmin Binks, Bernard P. Cho, Nam-Joon School of Materials Science and Engineering Centre for Cross Economy Engineering Oil pipeline Pollen Superhydrophobic surfaces, known for their water-repellent, and self-cleaning properties, are widely used in various applications. These advanced functional surfaces exhibit high contact angles (>150°), achieved through low surface energy chemistries and hierarchical roughness. Natural sunflower pollen is micron-sized spherical particles with nano-sized spikes on the surface. This study engineered superhydrophobic coatings using the unique hierarchical structure of sunflower pollen and low surface energy additives like polydimethylsiloxane (PDMS) and silane additives such as 1H,1H,2H,2H-perfluorooctyltrichlorosilane (FTS), octadecyltrichlorosilane (OTS) and dichlorodimethylsilane (DCDMS). The pollen content significantly modulates surface structure, roughness, and water contact angle. Higher pollen content enhances roughness and water repellency by creating micro-nano hierarchical structures. Pollen-PDMS-FTS and Pollen-PDMS coatings demonstrated the highest water contact angles (165 ± 2° and 163 ± 3°, respectively) and lowest sliding angles (4.5 ± 1° and 7.6 ± 2.6°, respectively), achieving a "lotus effect." Conversely, Pollen-PDMS-OTS or Pollen-PDMS-DCDMS coatings resulted in high sliding angles and water adhesion, producing a "rose petal effect." These "lotus effect" coatings are effectively applied in self-cleaning and water displacement in oil pipelines on hilly terrain. This study provides insights into the interplay between hierarchical structure and surface-free energy for designing superhydrophobic surfaces tailored for specific applications. Ministry of Education (MOE) This study received funding support from the Ministry of Education in Singapore under grant MOE-MOET32022-0002. 2025-02-04T07:51:51Z 2025-02-04T07:51:51Z 2024 Journal Article Li, J., Deng, J., Zhou, C., Yang, J., Shin, S., Binks, B. P. & Cho, N. (2024). Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen. Small, e2409136-. https://dx.doi.org/10.1002/smll.202409136 1613-6810 https://hdl.handle.net/10356/182490 10.1002/smll.202409136 39491526 2-s2.0-85208255755 e2409136 en MOE-MOET32022-0002 Small © 2024 Wiley-VCH GmbH. All rights reserved. |
| spellingShingle | Engineering Oil pipeline Pollen Li, Jian Deng, Jingyu Zhou, Chenchen Yang, Jueying Shin, Sungmin Binks, Bernard P. Cho, Nam-Joon Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| title | Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| title_full | Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| title_fullStr | Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| title_full_unstemmed | Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| title_short | Biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| title_sort | biomimetic superhydrophobic surfaces by nanoarchitectonics with natural sunflower pollen |
| topic | Engineering Oil pipeline Pollen |
| url | https://hdl.handle.net/10356/182490 |
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