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Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment
Arukalam, IO; Oguzie, EE; Li, Y; Li, Y (reprint author), Chinese Acad Sci, Lab Corros & Protect, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Liaoning, Peoples R China.
2018-02-15
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume512Pages:674-685
AbstractThe use of epoxy and polyurethane coatings as marine topcoats, have been influenced by their inherent high surface energy property which increases their affinity to water and microorganisms. Thus, their susceptibility to degradation is enhanced. Because of this defect, recently, nanostructured hydrophobic and superhydrophobic polysiloxane coatings are being preferred as topcoats. But the appropriate nanoparticle size and matrix:filler ratio which provide guide for the design of desired topcoats are scarcely available. In view of this, a series of hydrophobic and superhydrophobic coatings were prepared by sol gel process based on perfluorodecyltrichlorosilane (FDTS), different nanoZnO particles and poly(dimethylsiloxane) (PDMS):nanoZnO ratios. The liquid repellency, surface morphology and roughness of the coatings were conducted by use of contact angle goniometer, field emission scanning electron microscopy and atomic force microscopy, respectively. Additionally, the electrochemical and salt spray corrosion tests were conducted. According to the results, modifications of the coatings showed that anticorrosion performance was considerably influenced by the surface properties which were dependent on nanoZnO size and PDMS:nanoZnO ratio. Remarkably, the optimum effect was observed on the superhydrophobic coating based on 30 nm ZnO and 1:1 ratio. This displayed highest anticorrosion performance, and is therefore recommended as a guide for the design of marine topcoats. (C) 2017 Elsevier Inc. All rights reserved.; The use of epoxy and polyurethane coatings as marine topcoats, have been influenced by their inherent high surface energy property which increases their affinity to water and microorganisms. Thus, their susceptibility to degradation is enhanced. Because of this defect, recently, nanostructured hydrophobic and superhydrophobic polysiloxane coatings are being preferred as topcoats. But the appropriate nanoparticle size and matrix:filler ratio which provide guide for the design of desired topcoats are scarcely available. In view of this, a series of hydrophobic and superhydrophobic coatings were prepared by sol gel process based on perfluorodecyltrichlorosilane (FDTS), different nanoZnO particles and poly(dimethylsiloxane) (PDMS):nanoZnO ratios. The liquid repellency, surface morphology and roughness of the coatings were conducted by use of contact angle goniometer, field emission scanning electron microscopy and atomic force microscopy, respectively. Additionally, the electrochemical and salt spray corrosion tests were conducted. According to the results, modifications of the coatings showed that anticorrosion performance was considerably influenced by the surface properties which were dependent on nanoZnO size and PDMS:nanoZnO ratio. Remarkably, the optimum effect was observed on the superhydrophobic coating based on 30 nm ZnO and 1:1 ratio. This displayed highest anticorrosion performance, and is therefore recommended as a guide for the design of marine topcoats. (C) 2017 Elsevier Inc. All rights reserved.
description.department[arukalam, innocent o. ; li, ying] chinese acad sci, lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, liaoning, peoples r china ; [arukalam, innocent o.] fed univ technol owerri, dept polymer & text engn, pmb 1526, owerri, nigeria ; [arukalam, innocent o. ; oguzie, emeka e.] fed univ technol owerri, electrochem & mat sci res lab, dept chem, pmb 1526, owerri, nigeria
KeywordCorrosion Protection Surfaces Wettability Fabrication Polydimethylsiloxane Nanoparticles Morphology Behavior Blends Steel
Subject AreaChemistry, Physical
Funding OrganizationChinese Academy of Sciences President's International Fellowship Initiative for Postdoctoral Research [2015PT005]; National Natural Science Foundation of China [51650110506]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79500
Collection中国科学院金属研究所
Corresponding AuthorLi, Y (reprint author), Chinese Acad Sci, Lab Corros & Protect, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Arukalam, IO,Oguzie, EE,Li, Y,et al. Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,512:674-685.
APA Arukalam, IO,Oguzie, EE,Li, Y,&Li, Y .(2018).Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment.JOURNAL OF COLLOID AND INTERFACE SCIENCE,512,674-685.
MLA Arukalam, IO,et al."Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment".JOURNAL OF COLLOID AND INTERFACE SCIENCE 512(2018):674-685.
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