TY - JOUR
T1 - Enhancing adhesion and durability
T2 - A biomimetic approach with dopamine-modified lignin-polydimethylsiloxane coatings
AU - Wang, Di
AU - Yue, Xiaoqi
AU - Zhao, Jun
AU - Claesson, Per
AU - Zhang, Fan
AU - Pan, Jinshan
AU - Shi, Yijun
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/8/1
Y1 - 2024/8/1
N2 - Corrosion causes significant challenges in industrial settings, leading to economic losses and safety concerns. Previously, we developed a lignin-polydimethylsiloxane (lignin-PDMS) coating that exhibited high corrosion resistance. However, the adhesion of the developed lignin-PDMS coating to carbon steel was limited, affecting its overall performance. To address this, we incorporated dopamine (DOPA), known for its strong adhesive properties, as a pre-treatment before applying the coating. It was found that the adhesion and corrosion resistance of lignin-PDMS coated steel could be improved by adjusting the pH value of the DOPA solution. The steel treated with pH 4.5 DOPA solution showed two times higher adhesion strength to the coating than non-treated steel. After the DOPA treatment, the coating can maintain high barrier property for at least 3 months in 1 M NaCl solution, which is even better than commercial gelcoat, demonstrating super corrosion protection. Quartz Crystal Microbalance with Dissipation (QCM-D) and X-ray Photoelectron Spectroscopy (XPS) analyses confirmed the DOPA deposition on the steel surface. Our findings show that the DOPA-lignin-PDMS system is an environmentally friendly and efficient solution for enhancing the durability of steels in corrosive environments.
AB - Corrosion causes significant challenges in industrial settings, leading to economic losses and safety concerns. Previously, we developed a lignin-polydimethylsiloxane (lignin-PDMS) coating that exhibited high corrosion resistance. However, the adhesion of the developed lignin-PDMS coating to carbon steel was limited, affecting its overall performance. To address this, we incorporated dopamine (DOPA), known for its strong adhesive properties, as a pre-treatment before applying the coating. It was found that the adhesion and corrosion resistance of lignin-PDMS coated steel could be improved by adjusting the pH value of the DOPA solution. The steel treated with pH 4.5 DOPA solution showed two times higher adhesion strength to the coating than non-treated steel. After the DOPA treatment, the coating can maintain high barrier property for at least 3 months in 1 M NaCl solution, which is even better than commercial gelcoat, demonstrating super corrosion protection. Quartz Crystal Microbalance with Dissipation (QCM-D) and X-ray Photoelectron Spectroscopy (XPS) analyses confirmed the DOPA deposition on the steel surface. Our findings show that the DOPA-lignin-PDMS system is an environmentally friendly and efficient solution for enhancing the durability of steels in corrosive environments.
KW - Dopamine (A)
KW - Electrochemical Impedance Spectroscopy (B)
KW - Lignin anti-corrosion coating (C)
KW - Quartz crystal microbalance with dissipation (B)
KW - X-ray photoelectron spectroscopy (B)
UR - http://www.scopus.com/inward/record.url?scp=85197740352&partnerID=8YFLogxK
U2 - 10.1016/j.corsci.2024.112274
DO - 10.1016/j.corsci.2024.112274
M3 - Article
AN - SCOPUS:85197740352
SN - 0010-938X
VL - 236
JO - Corrosion Science
JF - Corrosion Science
M1 - 112274
ER -