Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings
Recent research efforts to combat marine biofouling have focused on foul-release coatings that are not harmful for the marine environment. Inspired by nature, Slippery lubricant infused porous surfaces (SLIPS) is a surface modification technology platform with excellent antiadhesive and antifouling...
| Main Authors: | , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/150357 |
| _version_ | 1826118385786683392 |
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| author | Basu, Snehasish Hanh, Bui My Muhammad Hafiz Ismail Chua, Isaiah Jia Qing Narasimalu, Srikanth Sekar, Manoj Labak, Andrew Vena, Alex Kim, Philseok Galhenage, Teluka P. Rice, Scott A. Miserez, Ali |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Basu, Snehasish Hanh, Bui My Muhammad Hafiz Ismail Chua, Isaiah Jia Qing Narasimalu, Srikanth Sekar, Manoj Labak, Andrew Vena, Alex Kim, Philseok Galhenage, Teluka P. Rice, Scott A. Miserez, Ali |
| author_sort | Basu, Snehasish |
| collection | NTU |
| description | Recent research efforts to combat marine biofouling have focused on foul-release coatings that are not harmful for the marine environment. Inspired by nature, Slippery lubricant infused porous surfaces (SLIPS) is a surface modification technology platform with excellent antiadhesive and antifouling capacities. Precommercial coatings based on the SLIPS concept have demonstrated promising results as an environmentally friendly strategy to combat marine biofouling. Here, we investigated the resistance against marine biofouling of a range of recently developed, biocide-free SLIPS commercial coatings. The fouling resistance performance was evaluated both in the lab and in the field by conducting multimonth immersion tests in high-fouling pressure environments. In the lab, we show that the coatings are able to largely deter settlement of marine mussels - one of the most invasive marine biofouling organisms - and to weaken their interfacial adhesion strength. The key design parameter of slippery coatings to minimize fouling is the thickness of the entrapped lubricant overlayer, which can be assessed through depth-sensing nanoindentation measurements. We find that the surface energy (i.e., hydrophobic versus hydrophilic), on the other hand, does not significantly influence the antifouling performance of these coatings in lab-scale studies. After immersion in the field in stagnant waters, all coatings exhibited efficient foul-release capacity against macrofoulers, whereas under stronger hydrodynamic flow conditions, only weakly attached biofilms were detected with a bacterial community composition that is independent of the surface energy. These results suggest that these large-scale paintable coatings exhibit a strong marine biofouling resistance with low maintenance costs, which represents an important advantage from a commercial application perspective. |
| first_indexed | 2024-10-01T04:42:52Z |
| format | Journal Article |
| id | ntu-10356/150357 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:42:52Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1503572022-04-07T02:27:02Z Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings Basu, Snehasish Hanh, Bui My Muhammad Hafiz Ismail Chua, Isaiah Jia Qing Narasimalu, Srikanth Sekar, Manoj Labak, Andrew Vena, Alex Kim, Philseok Galhenage, Teluka P. Rice, Scott A. Miserez, Ali School of Materials Science and Engineering School of Biological Sciences Singapore Centre for Environmental Life Sciences and Engineering (SCELSE) Energy Research Institute @ NTU (ERI@N) Centre for Biomimetic Sensor Science (CBSS) Engineering::Maritime studies::Maritime science and technology Engineering::Materials::Functional materials Science::Biological sciences::Microbiology Foul-release Coatings Marine Biofouling Recent research efforts to combat marine biofouling have focused on foul-release coatings that are not harmful for the marine environment. Inspired by nature, Slippery lubricant infused porous surfaces (SLIPS) is a surface modification technology platform with excellent antiadhesive and antifouling capacities. Precommercial coatings based on the SLIPS concept have demonstrated promising results as an environmentally friendly strategy to combat marine biofouling. Here, we investigated the resistance against marine biofouling of a range of recently developed, biocide-free SLIPS commercial coatings. The fouling resistance performance was evaluated both in the lab and in the field by conducting multimonth immersion tests in high-fouling pressure environments. In the lab, we show that the coatings are able to largely deter settlement of marine mussels - one of the most invasive marine biofouling organisms - and to weaken their interfacial adhesion strength. The key design parameter of slippery coatings to minimize fouling is the thickness of the entrapped lubricant overlayer, which can be assessed through depth-sensing nanoindentation measurements. We find that the surface energy (i.e., hydrophobic versus hydrophilic), on the other hand, does not significantly influence the antifouling performance of these coatings in lab-scale studies. After immersion in the field in stagnant waters, all coatings exhibited efficient foul-release capacity against macrofoulers, whereas under stronger hydrodynamic flow conditions, only weakly attached biofilms were detected with a bacterial community composition that is independent of the surface energy. These results suggest that these large-scale paintable coatings exhibit a strong marine biofouling resistance with low maintenance costs, which represents an important advantage from a commercial application perspective. Ministry of Education (MOE) National Research Foundation (NRF) Submitted/Accepted version This study was funded by the Singapore National Research Foundation under its Marine Science Research and Develop- ment Program (MSRDP), Grant MSRDP-P29 2021-05-28T01:01:06Z 2021-05-28T01:01:06Z 2020 Journal Article Basu, S., Hanh, B. M., Muhammad Hafiz Ismail, Chua, I. J. Q., Narasimalu, S., Sekar, M., Labak, A., Vena, A., Kim, P., Galhenage, T. P., Rice, S. A. & Miserez, A. (2020). Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings. ACS Applied Polymer Materials, 2(11), 5147-5162. https://dx.doi.org/10.1021/acsapm.0c00916 2637-6105 0000-0002-2890-0444 0000-0002-9486-2343 0000-0003-0864-8170 https://hdl.handle.net/10356/150357 10.1021/acsapm.0c00916 2-s2.0-85097562072 11 2 5147 5162 en MSRDP-P29 ACS Applied Polymer Materials This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Polymer Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsapm.0c00916 application/pdf |
| spellingShingle | Engineering::Maritime studies::Maritime science and technology Engineering::Materials::Functional materials Science::Biological sciences::Microbiology Foul-release Coatings Marine Biofouling Basu, Snehasish Hanh, Bui My Muhammad Hafiz Ismail Chua, Isaiah Jia Qing Narasimalu, Srikanth Sekar, Manoj Labak, Andrew Vena, Alex Kim, Philseok Galhenage, Teluka P. Rice, Scott A. Miserez, Ali Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings |
| title | Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings |
| title_full | Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings |
| title_fullStr | Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings |
| title_full_unstemmed | Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings |
| title_short | Laboratory and field testing assessment of next generation biocide-free, fouling-resistant slippery coatings |
| title_sort | laboratory and field testing assessment of next generation biocide free fouling resistant slippery coatings |
| topic | Engineering::Maritime studies::Maritime science and technology Engineering::Materials::Functional materials Science::Biological sciences::Microbiology Foul-release Coatings Marine Biofouling |
| url | https://hdl.handle.net/10356/150357 |
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