(186r) Marine Hull Coating System with Antifouling, Corrosion Resistance, and Self-Healing Properties

Marine hull coatings protect against fouling, corrosion, and environmental degradation, enhancing vessel performance, reducing fuel consumption, and meeting strict environmental regulations. Corrosion and biofouling ^[1] significantly impact material longevity and operational costs.^[2] Unlike traditional single-function coatings, integrated coatings perform better in harsh conditions.^[3]

We present results from our study of a multifunctional coating system incorporating Ti₃C₂T_x MXene nanosheets, a zwitterionic polymer, cellulose nanofibers, and a polymer matrix. This system benefits from corrosion resistance and self-healing properties of the MXene ^[4–6], the barrier strength of the polymer matrix, non-toxic antifouling of the zwitterionic polymer ^[7], and the mechanical durability of the nanofibers ^[8]. The structural, morphological, and chemical properties of the coating system are evaluated by performing SEM, TEM, XRD, FTIR, Raman spectroscopy, and XPS. The anti-fouling, anti-corrosion, and self-healing performance is assessed by conducting bacterial adhesion, biofilm formation assays, electrochemical impedance spectroscopy, potentiodynamic polarization, and scratch recovery under environmental stimuli tests.

References

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[2] A. A. M. M. Singh, P. A. Franco, J. S. Binoj, Mater. Today Proc. 2019, 15, 84.

[3] P. Wang, B. He, Y. Du, B. Wang, J. Gao, S. Liu, Q. Ye, F. Zhou, Chem. Eng. J. 2022, 448, 137668.

[4] M. Mozafari, M. Soroush, Mater. Adv. 2021, 2, 7277.

[5] H. Riazi, M. Anayee, K. Hantanasirisakul, et al., Adv. Mater. Interfaces 2020, 7, 1902008.

[6] S. Chen, Y. Huang, L. Gao, S. Zhang, Y. Chen, B. Zeng, H. Dai, Microchim. Acta 2023, 190, 372.

[7] Y. Zeng, P. Wang, B. He, S. Liu, Q. Ye, F. Zhou, Prog. Org. Coatings 2023, 183, 107727.

[8] Y. Lu, G. Yang, S. Wang, et al., Nat. Electron. 2024, 7, 51.