Abstract
The hydrophilic and porous surface nature of concrete leads to its vulnerability to the penetration of water and detrimental ions. To increase the durability of concrete infrastructure, facile and effective surface protection strategy is developed. Inspired by the universal mussel adhesion, polydopamine is facilely deposited on the cement surface, followed by the secondary hydrophobic modification. Amine-ended hydrophobic agent is disclosed to be more reactive with PDA surface than that ended with thiol, and the hydrophobic chains on surface in brush configuration is found to be more hydrophobic (achieving water contact angle of ~ 138.8°) than that in loops.
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On behalf of all authors, the corresponding author states that data will be made available upon request.
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Acknowledgments
This study was supported by General Program of National Natural Science Foundation of China (51878155), National Natural Science Foundation of China (Grant No. 52150067), Science and Technology Research and Development Plan of China Railway Corporation “Research on key technology of design and construction and performance improvement of reinforced concrete in coastal environment with strong corrosion” (N2020G055), and the Jiangsu Provincial Double-Innovation Doctor Program (JSSCBS20210142).
Funding
Funding was provided by General Program of National Natural Science Foundation of China (51878155), National Natural Science Foundation of China (52150067), Science and Technology Research and Development Plan of China Railway Corporation (N2020G055), and Jiangsu Provincial Double-Innovation Doctor Program (JSSCBS20210142).
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Sui, S., Zhang, J., Wang, L. et al. Facile and green fabrication of mussel-inspired polydopamine-based hydrophobic coating for concrete protection. MRS Communications 12, 794–800 (2022). https://doi.org/10.1557/s43579-022-00235-z
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DOI: https://doi.org/10.1557/s43579-022-00235-z