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Anticorrosion and barrier properties appraisal of poly(dimethylsiloxane)-ZnO nanocoating transition from superhydrophobic to hydrophobic state
Arukalam, Innocent O.; Li, Ying
2019-07-01
Source PublicationJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
ISSN1547-0091
Volume16Issue:4Pages:1077-1088
AbstractThe anticorrosion and barrier properties of poly(dimethylsiloxane) (PDMS)-ZnO nanocoating transition from superhydrophobic to hydrophobic state have been evaluated. The main objective was to appraise the durability performance of anticorrosion and barrier properties of the pristine superhydrophobic coating and its hydrophobic state after long-term exposure to marine water. Thus, water wettability, surface features, and corrosion resistance, as well as barrier performance of the 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane-modified PDMS-ZnO coating were evaluated after 15 cycles (1 h to 60 days) of immersion in 3.5 wt.% NaCl solution. The evaluations were made by use of surface analytical, physicochemical, and electrochemical techniques. The results show that the coating transformed from superhydrophobic state (after 1 h) to hydrophobic state (after 60 days). The transition was due to effect of corrosiveness of the salty water and disappearance of the surface air layer with consequent reduction in the surface roughness and increase in the porosity of the coating. Correspondingly, the value of the impedance modulus decreased from 4.257 x 10(9) ohm cm(2) (after 1 h) to 7.175 x 10(8) ohm cm(2) (after 60 days). The trend of coating film (R-cf) and charge transfer (R-ct) resistances with immersion time was found to be somewhat stable after 40-day immersion time. The observed high values of impedance modulus (|Z|(f=0.01 Hz)), R-cf and R-ct after 60 days of immersion clearly demonstrate that the anticorrosion property and barrier performance of the transformed hydrophobic PDMS-ZnO coating were good.
KeywordCorrosion resistance Electrochemical impedance spectroscopy Poly(dimethylsiloxane) Superhydrophobic Wetting transition
Indexed BySCI
Language英语
WOS IDWOS:000482088600015
PublisherSPRINGER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80929
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Arukalam, Innocent O.,Li, Ying. Anticorrosion and barrier properties appraisal of poly(dimethylsiloxane)-ZnO nanocoating transition from superhydrophobic to hydrophobic state[J]. JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH,2019,16(4):1077-1088.
APA Arukalam, Innocent O.,&Li, Ying.(2019).Anticorrosion and barrier properties appraisal of poly(dimethylsiloxane)-ZnO nanocoating transition from superhydrophobic to hydrophobic state.JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH,16(4),1077-1088.
MLA Arukalam, Innocent O.,et al."Anticorrosion and barrier properties appraisal of poly(dimethylsiloxane)-ZnO nanocoating transition from superhydrophobic to hydrophobic state".JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH 16.4(2019):1077-1088.
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