1
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Kim T, Eo S, Shim WJ, Kim M. Qualitative and quantitative assessment of microplastics derived from antifouling paint in effluent from ship hull hydroblasting and their emission into the marine environment. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135258. [PMID: 39047565 DOI: 10.1016/j.jhazmat.2024.135258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/04/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
This study focused on microplastic (MP) contamination originating from ship paint, particularly during the hydroblasting of ship hull, to understand the emission characteristics of MPs into the marine environment. We evaluated paint particles generated from the hydroblasting of an ocean-going vessel based on their number, size, polymer type, and mass. Hydroblasting a vessel produced 4.3 × 1015 particles, predominantly comprising acrylic particles, 99.9 % of which were smaller than 5 mm. Of the 44.1 kg of antifouling (AF) paint particles generated, 36.5 kg consisted of particles smaller than 5 mm, with 18.2 kg being identified as plastic emissions. Furthermore, we calculated the MP emission factor (8.43 g/m2) for hydroblasting on AF paint by dividing the total emission by the wetted surface area (WSA) of the vessel. This factor was then extrapolated by multiplying it with the total WSA of global ships and their hull cleaning frequency to preliminarily estimate the annual global MP emissions. Consequently, a total of 665.6 tons of plastics was generated globally by hydroblasting, with approximately 550.2 tons of these being in the form of MPs. This study highlights the need for developing stricter regulations governing hydroblasting operations and waste disposal practices to protect marine environments from MP pollution.
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Affiliation(s)
- Taekhyun Kim
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Soeun Eo
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Won Joon Shim
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Moonkoo Kim
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, University of Science and Technology, Daejeon 34113, Republic of Korea.
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2
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Zhou X, Wang Q, Su H, Tan Z, Li C, Li Z, Wu T. Low efficiency of cathodic protection in marine tidal corrosion of X80 steel in the presence of Pseudomonas sp. Bioelectrochemistry 2024; 157:108656. [PMID: 38290303 DOI: 10.1016/j.bioelechem.2024.108656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/01/2024]
Abstract
Owing to the effects of seawater erosion, dry/wet cycles, dissolved oxygen and microorganisms, the corrosion of steel in marine tidal environments is a serious threat to the safe and stable operation of marine equipment and facilities. Among them, microbiologically influenced corrosion (MIC) of steel has received increasing attention. Cathodic protection (CP) is frequently used to control the corrosion of offshore steel structures. However, in the presence of microorganisms, implementation of CP and its specific effects remain controversial. In this study, the influence of Pseudomonas sp. on the CP efficiency of Zn sacrificial anodes (ZnSAs) during the tidal corrosion of X80 steel was studied. The results showed that CP efficiency exceeded 92% in an abiotic tidal environment. However, in the biotic tidal environment, Pseudomonas sp. significantly reduced the CP efficiency. Pseudomonas sp. and its biofilm promoted the corrosion of steel under CP, inhibited the formation of a complete calcareous deposit layer, which weakened the CP efficiency of ZnSA in the marine tidal environment.
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Affiliation(s)
- Xiaobao Zhou
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Qin Wang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Hui Su
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Zhuowei Tan
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Cong Li
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Zhi Li
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China.
| | - Tangqing Wu
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China.
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3
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Watson J, Balmforth V, Gray E, Unthank MG. pH-Responsive, Thermoset Polymer Coatings for Active Protection against Aluminum Corrosion. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12986-12995. [PMID: 38426266 PMCID: PMC10941078 DOI: 10.1021/acsami.3c14752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
This paper describes the synthesis and use of multifunctional methacrylic monomers, which contain basic (amine) functional groups, including an example in which an acid-labile tert-butylcarbamate-protected glycine is used to form a novel methacrylic monomer. The "protected" amino acid-derived functional monomer (BOC-Gly-MA) is copolymerized with an epoxide functional methacrylic monomer (GMA), to deliver novel multifunctional polymers, which are processed into powder coatings and used to study filiform corrosion at the surface of an aluminum substrate. The BOC-Gly-MA-containing copolymers were shown to improve a coating's anticorrosion performance, presenting the lowest average filiform corrosion (FFC) track length, total FFC number, and total corroded surface area (CSA) of the coatings investigated. Further to this, a mode of action for the role of BOC-Gly functional polymers in corrosion protection is proposed, supported by both solution and polymer-aluminum interface studies, delivering new insights into the mode of action of pH-responsive polymer coatings.
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Affiliation(s)
- Joseph Watson
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Victoria Balmforth
- AkzoNobel,
Polymer Development Group, Stoneygate Lane, Felling, Tyne & Wear NE10 0JY, U.K.
| | - Elaine Gray
- AkzoNobel,
Polymer Development Group, Stoneygate Lane, Felling, Tyne & Wear NE10 0JY, U.K.
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4
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Aminifazl A, Karunarathne DJ, Golden TD. Synthesis of Silane Functionalized LDH-Modified Nanopowders to Improve Compatibility and Enhance Corrosion Protection for Epoxy Coatings. Molecules 2024; 29:819. [PMID: 38398571 PMCID: PMC10892364 DOI: 10.3390/molecules29040819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/25/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Novel modified Zn-Al LDH/epoxy coatings are synthesized and applied to steel substrates, providing active corrosion protection and improved barrier properties. This protective coating is made by combining Epon 828 as a polymer matrix with modified layered-double-hydroxy (LDH) nanoparticles acting as corrosion inhibitor containers. To synthesize the coatings, nitrate was intercalated into Zn-Al-LDH layers through an aqueous co-precipitation method to obtain Zn-Al LDH-NO3, and decavanadate replaced nitrate within the LDH layers through an anion exchange process to obtain Zn-Al LDH-(V10O28)6-. The intercalated LDH was functionalized by silanization with (3-aminopropyl)triethoxysilane (APTES) to increase the compatibility of the LDH inhibitor nanocontainers with epoxy resin and produce a protective coating. To protect the mild steel substrate, functionalized LDH nanopowders were dispersed into the epoxy resin, mixed with a polyamide hardener (Epikure 3571), and applied and cured to the metal surface. Surface morphology, structure, and chemical composition were determined for the modified LDH nanopowders using scanning electron microscopy, energy-dispersive X-ray analysis, X-ray diffraction, infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. Corrosion protection of the coating system was studied using long-term immersion testing and potentiodynamic polarization studies in a 3.5 wt.% NaCl solution.
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Affiliation(s)
| | | | - Teresa D. Golden
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, TX 76203, USA; (A.A.)
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5
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Zendehboudi A, Mohammadi A, Dobaradaran S, De-la-Torre GE, Ramavandi B, Hashemi SE, Saeedi R, Tayebi EM, Vafaee A, Darabi A. Analysis of microplastics in ships ballast water and its ecological risk assessment studies from the Persian Gulf. MARINE POLLUTION BULLETIN 2024; 198:115825. [PMID: 38029669 DOI: 10.1016/j.marpolbul.2023.115825] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 12/01/2023]
Abstract
Transport of ballast water is considered a significant vector for dispersion of different pollutants, including microplastics (MPs), throughout the world's oceans. However, there is limited information on MPs in ballast water. Size distribution, polymer type, and ecological risks of MPs in ballast water were investigated for the first time in this study. The mean levels of MPs in ballast water and seawater samples were 12.53 and 11.80 items/L, respectively. MPs with a size category of 50-300 μm was the most abundant. Fiber, black, and polycarbonate (PC) were the predominant shape, color, and polymer type of identified MPs in ballast water and seawater, respectively. The pollution load index (PLI), hazard index (HI), and risk quotient (RQ) indicated high levels of MP pollution, potentially indicating an ecological risk. These findings increase our understanding of the major sources (such as ballast water), transportation routes, and related ecological risks of MPs to marine ecosystems.
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Affiliation(s)
- Atefeh Zendehboudi
- Student Research Committee, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Azam Mohammadi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Sina Dobaradaran
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Essen, Germany; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, Essen, 45141, Germany.
| | - Gabriel E De-la-Torre
- Grupo de Investigación de Biodiversidad, Medio Ambiente y Sociedad, Universidad San Ignacio de Loyola, Lima, Peru
| | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Seyed Enayat Hashemi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Reza Saeedi
- Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Health and Safety, and Environment (HSE), School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Ahmad Vafaee
- Department of Bushehr Ports & Maritime Authority, Iran
| | - AmirHossein Darabi
- The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
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6
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Tu K, Wu J, Zhao X, Zhang L, Zhang Z. Repair Strategy for Epoxy Anticorrosive Coatings on Steel Structures. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6257. [PMID: 37763535 PMCID: PMC10532836 DOI: 10.3390/ma16186257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023]
Abstract
This paper presents the results of a test of epoxy anticorrosion coating repair. Two strategies of coating repair were studied, respectively: partial repair and integral repair. The gloss loss rate, color difference and rust area rate of the repair coating were measured. The anticorrosion performance of repair coatings under different repair methods was compared. Based on the results of the coating repair test, the repair criteria for coatings were defined, and the repair strategy for epoxy anticorrosive coatings on steel structure was proposed. The results show that Marathon 500 super abrasion resistant epoxy paint (M500) and Jotamastic 90 GF low surface treatment epoxy abrasion resistant glass flake paint (J90GF) are suitable for partial repair of epoxy anticorrosive coatings on steel structures, and that Jotamastic 90 low surface treatment epoxy abrasion resistant coating (J90) and Marathon 500 super abrasion resistant epoxy paint (M500) are suitable for integral repair of epoxy anticorrosive coatings on steel structures.
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Affiliation(s)
- Kun Tu
- Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China; (K.T.)
- Jiangsu Airport Infrastructure Safety Engineering Research Center, 29 Yudao Street, Nanjing 210016, China
| | - Jin Wu
- Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China; (K.T.)
- Jiangsu Airport Infrastructure Safety Engineering Research Center, 29 Yudao Street, Nanjing 210016, China
| | - Xing Zhao
- Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China; (K.T.)
- Jiangsu Airport Infrastructure Safety Engineering Research Center, 29 Yudao Street, Nanjing 210016, China
| | - Lifang Zhang
- Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China; (K.T.)
- Jiangsu Airport Infrastructure Safety Engineering Research Center, 29 Yudao Street, Nanjing 210016, China
| | - Zehui Zhang
- Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China; (K.T.)
- Jiangsu Airport Infrastructure Safety Engineering Research Center, 29 Yudao Street, Nanjing 210016, China
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7
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Fan B, Yang J, Cao L, Wang X, Li J, Yang Y, Wang Q, Zhang P, Vogel F, Li W, Lin Z. Revealing the Impact of Micro-SiO 2 Filer Content on the Anti-Corrosion Performance of Water-Borne Epoxy Resin. Polymers (Basel) 2023; 15:3273. [PMID: 37571168 PMCID: PMC10422263 DOI: 10.3390/polym15153273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023] Open
Abstract
Due to green development in recent years, water-borne epoxy resins (WBE) have become increasingly popular since they generate the lowest level of volatile organic compounds (VOC) during curing. However, because of the large surface tension of water, it is easy to produce voids and cracks during the curing process of the coating. An electrochemical strategy was used in this study to assess the impact of different SiO2 content on the corrosion performance of a WBE coating, in which micron spherical SiO2 particles were synthesized in a liquid phase reduction. The results showed that the synthesized micron spherical SiO2 particles were about 800 ± 50 nm in diameter and in an amorphous state. By hydrophilizing the surfaces of these SiO2 particles, uniform dispersion in an aqueous solvent and a WBE can be achieved. It is important to note that adding a small or excessive amount of SiO2 to a coating will not improve corrosion resistance and may even reduce corrosion resistance. With the appropriate modification of SiO2, corrosion resistance of composite coatings is greatly enhanced, as is the adhesion between the coatings and the metallic substrates. Because the appropriately modified SiO2 can effectively fill the pores that are formed during the curing process, a corrosive medium is less likely to react with the matrix when the medium comes into contact with the matrix. Based on their incorporation content of 3 wt.%, their corrosion resistance is the best after 16 cycles of AC-DC-AC accelerated corrosion tests.
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Affiliation(s)
| | | | | | | | | | | | | | - Peng Zhang
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China; (B.F.); (J.Y.); (L.C.); (X.W.); (J.L.); (Y.Y.); (Q.W.); (W.L.)
| | | | | | - Zhidan Lin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China; (B.F.); (J.Y.); (L.C.); (X.W.); (J.L.); (Y.Y.); (Q.W.); (W.L.)
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8
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Darabinajand B, Mirmohseni A, Niaei A. Modification of
ZSM
‐5 zeolite nanoparticles by graphene oxide to improve anticorrosion properties of polyurethane coating. J Appl Polym Sci 2023. [DOI: 10.1002/app.53908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Bahman Darabinajand
- Faculty of Chemical and Petroleum Engineering University of Tabriz Tabriz Iran
| | - Abdolreza Mirmohseni
- Department of Applied Chemistry, Faculty of Chemistry University of Tabriz Tabriz Iran
| | - Aligholi Niaei
- Faculty of Chemical and Petroleum Engineering University of Tabriz Tabriz Iran
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9
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da Silva KT, Oliveira BS, da Silva LRR, Mattos ALA, Mazzetto SE, Lomonaco D. Bio‐based
novolac resins from cashew nut processing waste: Alternative resource for the development of
high‐value
sustainable products. J Appl Polym Sci 2023. [DOI: 10.1002/app.53661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kássia Teixeira da Silva
- Department of Metallurgical and Materials Engineering Federal University of Ceará Fortaleza Brazil
| | - Beatriz S. Oliveira
- Department of Organic and Inorganic Chemistry Federal University of Ceará Fortaleza Brazil
| | - Lucas R. R. da Silva
- Department of Metallurgical and Materials Engineering Federal University of Ceará Fortaleza Brazil
| | | | - Selma E. Mazzetto
- Department of Organic and Inorganic Chemistry Federal University of Ceará Fortaleza Brazil
| | - Diego Lomonaco
- Department of Organic and Inorganic Chemistry Federal University of Ceará Fortaleza Brazil
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10
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Singh P, Rana A, Karak N, Kumar I, Rana S, Kumar P. Sustainable smart anti-corrosion coating materials derived from vegetable oil derivatives: a review. RSC Adv 2023; 13:3910-3941. [PMID: 36756545 PMCID: PMC9890588 DOI: 10.1039/d2ra07825b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/13/2023] [Indexed: 01/28/2023] Open
Abstract
Sustainable development is a critical concern in this fast-paced technological world. Therefore, it is essential to employ renewable resources to move towards sustainable development goals (SDGs). The polyols attained from renewable resources, including lignin, chitosan, vegetable oils, cellulose, etc. and the polymers derived from them have attracted the attention of the majority of researchers, both in academia and industry. The development of bio-based polymers from vegetable oils start emerging with different properties to generate a value-added system. This review will give an impression to readers about how coatings generated from vegetable oils can find a way towards better protective properties against corrosion either by using fillers or by using molecular structure modifications in the system, thus covering a range of vegetable oil-based self-healing polymers and their application in anti-corrosion coatings.
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Affiliation(s)
- Poonam Singh
- University of Petroleum & Energy Studies (UPES), School of Engineering, Energy Acres Bidholi Dehradun 248007 India
| | - Anuj Rana
- Department of Microbiology, College of Basic Sciences & Humanities, Chaudhary Charan Singh Haryana Agricultural UniversityHisar125004India
| | - Niranjan Karak
- Department of Chemical Sciences, Tezpur UniversityNapaam 784028India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and SciencePilani 333 031India
| | - Sravendra Rana
- University of Petroleum & Energy Studies (UPES), School of Engineering, Energy Acres Bidholi Dehradun 248007 India
| | - Pankaj Kumar
- University of Petroleum & Energy Studies (UPES), School of Engineering, Energy Acres Bidholi Dehradun 248007 India
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11
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S. P V, Xavier JR. Effects of poly(o-phenylenediamine) functionalized SiC on the corrosion protection ability of neat polyurethane coating system in the marine environment. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2022. [DOI: 10.1080/1023666x.2022.2155770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Vinodhini S. P
- Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - Joseph Raj Xavier
- Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India
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12
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Xu W, Yang C, Su W, Zhong N, Xia X. Effective corrosion protection by PDA-BN@CeO2 nanocomposite epoxy coatings. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Ghaderi M, SaadatAbadi AR, Mahdavian M, Haddadi SA. pH-Sensitive Polydopamine-La (III) Complex Decorated on Carbon Nanofiber toward On-Demand Release Functioning of Epoxy Anti-Corrosion Coating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11707-11723. [PMID: 36098635 DOI: 10.1021/acs.langmuir.2c01801] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The high aspect ratio and unique thermal and electrical characteristics of carbon nanofiber (CNF) made it an ideal physical barrier against the penetration of corrosive ions. However, the poor compatibility of the CNF with the polymer matrix and the lack of active corrosion inhibitors are the key limitations of this nanomaterial, resulting in short-term anti-corrosion resistance. An intelligent self-healing epoxy (EP) coating, including CNF modified with a polydopamine (PDA)-La3+ complex, was successfully fabricated to overcome these issues. Electrochemical impedance spectroscopy (EIS) evaluation implied that mild steel (MS) submerged in a 3.5 wt % NaCl solution containing the CNF-PDA-La extract had a total corrosion resistance (RT) of 3107 Ω cm2 after 24 h, which is much greater than the MS immersed in the blank solution (1378 Ω cm2). Furthermore, the potentiodynamic polarization analysis indicated a 50% reduction in the corrosion rate (CR) of the MS soaked in the solution containing released PDA and La3+ inhibitors compared to the blank solution. EIS and salt spray analysis were used to assess the self-healing capabilities of epoxy coatings incorporating modified CNFs. EIS assessment of scratched coatings revealed a 117% improvement in RT of the CNF-PDA-La/EP coating compared to the Blank/EP after 10 h of immersion in the saline solution. This enhancement is due to the intelligent release of PDA and La3+ inhibitors at the scratch sites, which can mitigate MS corrosion by forming a PDA-Fe complex and the deposition of La(OH)3 on the MS surface. The salt spray test results also exhibited the CNF-PDA-La/EP coating's superior anti-corrosion capabilities after 20 days. Hence, this research presents a logical approach for developing anti-corrosion coatings with improved nanofiller compatibility and self-healing characteristics.
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Affiliation(s)
- Mohammad Ghaderi
- Department of Chemical & Petroleum Engineering, Sharif University of Technology, Tehran 111559465, Iran
| | | | - Mohammad Mahdavian
- Surface Coating and Corrosion Department, Institute for Color Science and Technology, Tehran 1668836471, Iran
| | - Seyyed Arash Haddadi
- Department of Chemical & Petroleum Engineering, Sharif University of Technology, Tehran 111559465, Iran
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14
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Jing W, Zhang F, Chen H. Comparative tribological performance and erosion resistance of epoxy resin composite coatings reinforced with aramid fiber and carbon fiber. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129354] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Li G, Xu H, Ma Y, Wu Y, Chen L, An Y, Zhou H, Chen J. A dense structure constructed by flake and spherical aluminum: Simultaneously enhanced anti‐wear and anti‐corrosion properties of epoxy/polytetrafluoroethylene composite coatings. J Appl Polym Sci 2022. [DOI: 10.1002/app.52865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Guihua Li
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
| | - Haiyan Xu
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
| | - Yanjun Ma
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
| | - Yanping Wu
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
| | - Lei Chen
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
| | - Yulong An
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
| | - Huidi Zhou
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
| | - Jianmin Chen
- Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences Lanzhou China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
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16
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AhadiParsa M, Dehghani A, Ramezanzadeh M, Ramezanzadeh B. Rising of MXenes: Novel 2D-functionalized nanomaterials as a new milestone in corrosion science - a critical review. Adv Colloid Interface Sci 2022; 307:102730. [PMID: 35868175 DOI: 10.1016/j.cis.2022.102730] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/29/2022] [Accepted: 07/03/2022] [Indexed: 11/01/2022]
Abstract
Corrosion is a natural process between a metal and its environment that can gradually cause catastrophic damage to the metal equipment, which would have economic implications. Consequently, several protective methods have been utilized to prevent metals from severe degradation. Organic polymeric coatings have been widely used as the most convenient and cost-effective method to boost metals' anti-corrosion properties. Nonetheless, these coatings have a significant amount of solvent, resulting in shrinkage and micro defects in the films during the curing process. Many studies have verified that transition metal carbides/nitrides (MXenes) can form a "labyrinth effect" in the polymeric coatings due to their "nano-barrier effect". Furthermore, based on their sheet-like structures, they can considerably cover the surface defects of the polymeric films. Therefore, the penetration of corrosive elements can be substantially curbed. It is the first review that specifically focused on the new family of 2D nanomaterials, i.e., MXenes, and discussed their applications in corrosion protection systems. The MXenes' pros and cons in the polymeric matrixes as nanofillers will be clarified. Moreover, the synthesis and functionalization methods of the MXenes, their applications, and corrosion protection mechanism will be explored. Subsequently, the MXenes' superiority over other 2D nanomaterials will be highlighted while their future perspectives and industrial applications will be predicted.
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Affiliation(s)
- Mobina AhadiParsa
- Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran
| | - Ali Dehghani
- Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran; Department of Chemical Engineering, Faculty of Engineering, Golestan University, Aliabad Katoul, Iran
| | - Mohammad Ramezanzadeh
- Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran
| | - Bahram Ramezanzadeh
- Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran.
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17
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Powder and High-Solid Coatings. COATINGS 2022. [DOI: 10.3390/coatings12060786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
This Special Issue presents a series of research papers and reviews about the actual trend of powder and high solid coatings which show the advantage of great environmental sustainability by avoiding the massive use of organic solvents. Moreover, some very interesting studies exist on the move from a simple protective layer to a smart coating with additional properties, both for the aesthetic and functional aspects.
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Najem A, Sabiha M, Laourayed M, Belfhaili A, Benhiba F, Boudalia M, Warad I, Bellaouchou A, Guenbour A, Zarrouk A. New Green Anti-corrosion Inhibitor of Citrus Peels for Mild Steel in 1 M HCl: Experimental and Theoretical Approaches. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00366-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Emerging Layered Materials and Their Applications in the Corrosion Protection of Metals and Alloys. SUSTAINABILITY 2022. [DOI: 10.3390/su14074079] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Metals and alloys are essential in modern society, and are used in our daily activities. However, they are prone to corrosion, with the conversion of the metal/alloy to its more thermodynamically-favored oxide/hydroxide phase. These undesirable corrosion reactions can lead to the failure of metallic components. Consequently, corrosion-protective technologies are now more important than ever, as it is essential to reduce the waste of valuable resources. In this review, we consider the role of emerging 2D materials and layered materials in the development of a corrosion protection strategy. In particular, we focus on the materials beyond graphene, and consider the role of transition metal dichalcogenides, such as MoS2, MXenes, layered double hydroxides, hexagonal boron nitride and graphitic carbon nitride in the formulation of effective and protective films and coatings. Following a short introduction to the synthesis and exfoliation of the layered materials, their role in corrosion protection is described and discussed. Finally, we discuss the future applications of these 2D materials in corrosion protection.
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20
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Performance Assessment of Differently Dried Coating Systems for Potential Application in the Power Transformer Industry. COATINGS 2022. [DOI: 10.3390/coatings12030331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Many companies in the power transformer industry are striving to speed up the drying process of coatings, which is why alternative drying methods are constantly being explored while maintaining the same coating protection properties. The infrared (IR) drying of protective coatings is a potential solution for their higher productivity, but has not yet been extensively investigated. In this paper, two solvent-borne coating systems, with and without zinc in the primer, from two different manufacturers, dried by infrared radiation and under atmospheric conditions, were studied. The coating systems consisted of epoxy primer, epoxy intermediate coat, and polyurethane topcoat. Anti-corrosion performance of the coatings was characterized using a salt spray chamber, pull-off adhesion testing, electrochemical impedance spectroscopy (EIS) investigation, and open circuit potential (OCP) measurement. All samples were analyzed using stereo microscope. A scanning electron microscope (SEM) with energy-dispersive X-ray spectroscopy (EDX) for detailed study and chemical composition determination was used. The results showed that infrared technology notably reduced coating drying times while maintaining or improving anticorrosion performance properties compared to the coatings dried under atmospheric conditions.
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21
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Steffi AP, Balaji R, Prakash N, Rajesh TP, Ethiraj S, Samuel MS, Nadda AK, Chandrasekar N. Incorporation of SiO 2 functionalized gC 3N 4 sheets with TiO 2 nanoparticles to enhance the anticorrosion performance of metal specimens in aggressive Cl - environment. CHEMOSPHERE 2022; 290:133332. [PMID: 34922970 DOI: 10.1016/j.chemosphere.2021.133332] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/29/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Nowadays, carbon-based nano-structured materials are widely preferred for composite coating as anti-corrosive reinforcement mainly due to its enhanced physical, chemical and mechanical properties. Herein we develop highly efficient Graphitic carbon nitride-Silica-Titania (gC3N4/SiO2/TiO2) ternary nanocomposite are synthesized and it is used as a nanofillers in the corrosive protection layer on the proposed metal specimen (i.e., mild steel specimen) in an aggressive chloride environment. Size, structural and morphological analysis were analysed for the confirmation of presence of particles. gC3N4 is currently earning quite drastic attention, owing to its affordable cost compared to carbon nanotubes and other carbon-based materials, when gC3N4 incorporated with SiO2 and TiO2, the composite matrix greatly improves the mechanical strength of the coating mixture. XRD, XPS, EDS analysis projects excellent formation and presence of the ternary nanocomposites. The particles are well-dispersed in epoxy and organic resin and deposited on the mildsteel panels and it is examined using various surface and structural characterization techniques. The obtained results are very encouraging and the ternary composite coatings can be recommended for real world applications.
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Affiliation(s)
- Alexander Pinky Steffi
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India
| | - Ramachandran Balaji
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Natarajan Prakash
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India
| | | | - Selvarajan Ethiraj
- Department of Genetic Engineering, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India
| | - Melvin S Samuel
- Department of Material Science and Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Ashok Kumar Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, 173 234, India
| | - Narendhar Chandrasekar
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India.
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22
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Zhang J, Li Y. Green synthesis of poly(
o
‐phenylenediamine) polymer film on stainless steel as a corrosion protection layer. J Appl Polym Sci 2022. [DOI: 10.1002/app.51572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jia‐Wei Zhang
- School of Metallurgy Northeastern University Shenyang China
- Liaoning Key Laboratory of Metallurgical Sensor Materials and Technology, Northeastern University Shenyang China
| | - Ying Li
- School of Metallurgy Northeastern University Shenyang China
- Liaoning Key Laboratory of Metallurgical Sensor Materials and Technology, Northeastern University Shenyang China
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23
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Li S, Du F, Lin Y, Guan Y, Qu W, Cheng J, Wang D. Excellent anti-corrosion performance of epoxy composite coatings filled with novel N-doped carbon nanodots. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Kanwal S, Akhter Z, Ali NZ, Hussain R, Qamar S. Corrosion protection of aluminum alloy (AA2219-T6) using sulfonic acid-doped conducting polymer coatings. NEW J CHEM 2022. [DOI: 10.1039/d2nj02219b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Incorporation of organic materials into polypyrrole and polyaniline matrices to reinforce their anticorrosive properties for the protection of aluminum alloys.
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Affiliation(s)
- Sehrish Kanwal
- Department of Chemistry, Quaid-I-Azam University, 45320 Islamabad, Pakistan
| | - Zareen Akhter
- Department of Chemistry, Quaid-I-Azam University, 45320 Islamabad, Pakistan
| | - Naveed Zafar Ali
- National Centre for Physics, Quaid-i-Azam University Campus, 44000 Islamabad, Pakistan
| | - Rizwan Hussain
- National Centre for Physics, Quaid-i-Azam University Campus, 44000 Islamabad, Pakistan
| | - Samina Qamar
- Department of Chemistry, Quaid-I-Azam University, 45320 Islamabad, Pakistan
- National Centre for Physics, Quaid-i-Azam University Campus, 44000 Islamabad, Pakistan
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25
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Hamidon TS, Yun TP, Zakaria FA, Hussin MH. Potential of zinc based-graphene oxide composite coatings on mild steel in acidic solution. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Auckloo SAB, Palaniandy K, Hung YM, Lazzara G, Chai SP, Pasbakhsh P. Nonporous, Strong, Stretchable, and Transparent Electrospun Aromatic Polyurea Nanocomposites as Potential Anticorrosion Coating Films. NANOMATERIALS 2021; 11:nano11112998. [PMID: 34835761 PMCID: PMC8618329 DOI: 10.3390/nano11112998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 10/26/2021] [Accepted: 11/03/2021] [Indexed: 11/30/2022]
Abstract
This study, for the first time, focused on the fabrication of nonporous polyurea thin films (~200 microns) using the electrospinning method as a novel approach for coating applications. Multi-walled carbon nanotubes (MWCNTs) and hydrophilic-fumed nanosilica (HFNS) were added separately into electrospun polyurea films as nano-reinforcing fillers for the enhancement of properties. Neat polyurea films demonstrated a tensile strength of 14 MPa with an elongation of 360%. At a loading of 0.2% of MWCNTs, the highest tensile strength of 21 MPa and elongation of 402% were obtained, while the water contact angle remained almost unchanged (89°). Surface morphology analysis indicated that the production of polyurea fibers during electrospinning bonded together upon curing, leading to a nonporous film. Neat polyurea exhibited high thermal resistance with a degradation temperature of 380 °C. Upon reinforcement with 0.2% of MWCNTs and 0.4% of HFNS, it increased by ~7 °C. The storage modulus increased by 42 MPa with the addition of 0.2% of MWCNTs, implying a superior viscoelasticity of polyurea nanocomposite films. The results were benchmarked with anti-corrosive polymer coatings from the literature, revealing that the production of nonporous polyurea coatings with robust strength, elasticity, and thermal properties was achieved. Electrospun polyurea coatings are promising candidates as flexible anti-corrosive coatings for heat exchanges and electrical wires.
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Affiliation(s)
- Sheik Ambarine Banon Auckloo
- Mechanical Engineering Discipline, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia; (S.A.B.A.); (K.P.); (Y.M.H.)
| | - Khanisya Palaniandy
- Mechanical Engineering Discipline, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia; (S.A.B.A.); (K.P.); (Y.M.H.)
| | - Yew Mun Hung
- Mechanical Engineering Discipline, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia; (S.A.B.A.); (K.P.); (Y.M.H.)
| | - Giuseppe Lazzara
- Department of Physics and Chemistry, University of Palermo, Viale delle Scienze, pad. 17, 90128 Palermo, Italy;
| | - Siang-Piao Chai
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia;
| | - Pooria Pasbakhsh
- Mechanical Engineering Discipline, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Malaysia; (S.A.B.A.); (K.P.); (Y.M.H.)
- Correspondence: ; Tel.: +60-3551-46211; Fax: +60-3551-46207
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Hassanein A, Khan A, Fayyad E, Abdullah AM, Kahraman R, Mansoor B, Shakoor RA. Multilevel Self-Healing Characteristics of Smart Polymeric Composite Coatings. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51459-51473. [PMID: 34674522 DOI: 10.1021/acsami.1c14406] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Smart polymeric composite coatings demonstrating multilevel self-healing characteristics were developed and characterized. The pH-responsive smart carriers were synthesized by loading halloysite nanotubes (HNTs) with the benzotriazole corrosion inhibitor (BTA) using the vacuum cycling method, referred to as (BTA-loaded HNTs). Similarly, mechanically triggered melamine urea-formaldehyde microcapsules encapsulated with the boiled linseed oil-self-healing agent (LO) denoted as (MUFMCs) having an average size of a ∼120 μm diameter with a wall thickness of ∼1.84 μm were synthesized by the in situ polymerization technique. The newly designed double-layered smart polymeric composite coatings (DLPCs) were developed by mixing 3 wt % BTA-loaded HNTs with epoxy and applying it on the clean steel substrate to form a primer layer. After its complete curing, a top layer of epoxy containing 5 wt % of MUFMCs was deposited on it. For an exact comparison, single-layer polymeric composite coatings (SLPCs) containing 3 wt % BTA-loaded HNTs were also developed. The Fourier transform infrared radiation spectra of MUFMCs and BTA-loaded HNTs indicate the existence of all desired functional groups, confirming the presence of loaded chemical species such as LO and BTA into the smart carriers. Thermogravimetric analysis (TGA) indicates that ∼18% BTA is successfully loaded into HNTs. Quantitative UV-spectroscopic analysis indicates a pH-responsive release of BTA from BTA-loaded HNTs, which is time-dependent, attaining its maximum value of ∼ 90% in an acidic medium after 30 h. Electrochemical impedance spectroscopy analysis conducted in 3.5 wt % NaCl solution at room temperature for different immersion times reveals that SLPC exhibits the maximum charge-transfer resistance (Rct) of 55.47 GΩ cm2 after the 7th day of immersion, and then, a declining trend is observed, reaching 26.6 GΩ cm2 after the 9th day. However, in the case of DLPC, the Rct values show a continuous increment, attaining a maximum value of 82.11 GΩ cm2 after the 9th day of immersion. The improved performance of DLPC can be ascribed to the efficient triggering of the individual carriers in the isolated matrices, resulting in the release of LO and BTA to form individual protective films at the damaged area due to the oxidative polymerization process and triazoles' ability of passive film formation on the substrate, respectively. The tempting self-healing properties of DLPCs justify their decent role for long-term corrosion protection in many industrial applications.
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Affiliation(s)
- Amani Hassanein
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | - Adnan Khan
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Eman Fayyad
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | | | - Ramazan Kahraman
- Department of Chemical Engineering, Qatar University, 2713 Doha, Qatar
| | - Bilal Mansoor
- Mechanical Engineering Program, Texas A&M University at Qatar, 2713 Doha, Qatar
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - R A Shakoor
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
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28
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Shahini M, Taheri N, Mohammadloo HE, Ramezanzadeh B. A comprehensive overview of nano and micro carriers aiming at curtailing corrosion progression. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.06.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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29
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Yuping Y, Guosheng H, Yingxiang M, Li M, Xuehui L, Yi G, Lijie D. Synthesis of Self-healing Magnetic Microcapsules with Targeted Delivery through Magnetizing Emulsifiers. CHEM LETT 2021. [DOI: 10.1246/cl.210159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yang Yuping
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, P. R. China
| | - Huang Guosheng
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, P. R. China
| | - Ma Yingxiang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Ma Li
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, P. R. China
| | - Liu Xuehui
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, P. R. China
| | - Guo Yi
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Dong Lijie
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
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30
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Hsissou R. Review on epoxy polymers and its composites as a potential anticorrosive coatings for carbon steel in 3.5% NaCl solution: Computational approaches. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116307] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Ni J, Liu R, Yan C. Facile construction of poly(styrene-acrolein)/reduced graphene oxide nanocomposites via in-situ reduction and its corrosion resistance properties in waterborne acrylic resin coating. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Haddadi SA, Ramazani S.A. A, Mahdavian M, Arjmand M. Epoxy nanocomposite coatings with enhanced dual active/barrier behavior containing graphene-based carbon hollow spheres as corrosion inhibitor nanoreservoirs. CORROSION SCIENCE 2021; 185:109428. [DOI: 10.1016/j.corsci.2021.109428] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
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33
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Lee TH, Tsai JH, Chen HY, Huang PT. Polytriphenylamine and Poly(styrene- co-hydroxystyrene) Blends as High-Performance Anticorrosion Coating for Iron. Polymers (Basel) 2021; 13:1629. [PMID: 34067913 PMCID: PMC8156867 DOI: 10.3390/polym13101629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/06/2021] [Accepted: 05/12/2021] [Indexed: 11/17/2022] Open
Abstract
An electroactive polytriphenylamine (PTPA-C6) is blended with poly(styrene-co-hydroxystyrene) (PS-co-PHS) as coating layers to enhance protection efficiency of PTPA-C6 on iron substrate in 3.5% sodium chloride (NaCl) solution. Experimental results show that incorporation of hydroxyl group to the polystyrene not only increases the miscibility of PTPA-C6 with PS through the hydrogen bond formation, but also enhances the bonding strength between the polymer coating layer and iron substrate. These improvements lead to superior enhancement in anticorrosion performance of PTPA-C6, even after thermal treatment. Protection efficiency (PE) of PTPA-C6 increases from 81.52% of the PTPA-C6 itself to over 94.40% under different conditions (PEmax = 99.19%).
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Affiliation(s)
| | | | | | - Ping-Tsung Huang
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 24205, Taiwan; (T.-H.L.); (J.-H.T.); (H.-Y.C.)
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34
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Gąsiorek J, Mazur-Nowacka A, Szczurek A, Babiarczuk B, Tic WJ, Guziałowska-Tic J, Kaleta J, Krzak J. Influence of Zirconia and Organic Additives on Mechanical and Electrochemical Properties of Silica Sol-Gel Coatings. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2389. [PMID: 34064371 PMCID: PMC8124161 DOI: 10.3390/ma14092389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 01/27/2023]
Abstract
This paper presents the result of the investigation of organically modified silica (ORMOSIL)-zirconia coatings used to enhance their protective properties, namely corrosion and scratch resistance. Two different materials, i.e., SiO2/ZrO2 and SiO2/GPTMS/ZrO2, were synthesized, measured, and analyzed to find the difference in the used organosilane precursor (dimethyldiethoxysilane and (3-glycidoxypropyl)trimethoxysilane, respectively). SiO2/ZrO2 coatings showed higher hardness than SiO2/GPTMS/ZrO2. Moreover, the value of polarization resistance (Rp) for SiO2/GPTMS/ZrO2 coated 316L steel relative to the uncoated one was obtained. It was nearly 84 times higher. The coating delamination was observed with load 16N. Additionally, the corrosion mitigation for 316L coated by SiO2/GPTMS/ZrO2 was observed even after extended exposure to corrosion agents.
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Affiliation(s)
- Jolanta Gąsiorek
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-372 Wroclaw, Poland; (A.S.); (B.B.); (J.K.)
| | - Anna Mazur-Nowacka
- Faculty of Chemistry, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-372 Wroclaw, Poland;
| | - Anna Szczurek
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-372 Wroclaw, Poland; (A.S.); (B.B.); (J.K.)
| | - Bartosz Babiarczuk
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-372 Wroclaw, Poland; (A.S.); (B.B.); (J.K.)
| | - Wilhelm Jan Tic
- West Technology & Trading Polska, Sp. z o.o., Oświęcimska 100E, 45-641 Opole, Poland; (W.J.T.); (J.G.-T.)
- Department of Process and Environmental Engineering, Opole University of Technology, 45-758 Opole, Poland
| | - Joanna Guziałowska-Tic
- West Technology & Trading Polska, Sp. z o.o., Oświęcimska 100E, 45-641 Opole, Poland; (W.J.T.); (J.G.-T.)
- Department of Process and Environmental Engineering, Opole University of Technology, 45-758 Opole, Poland
| | - Jerzy Kaleta
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-372 Wroclaw, Poland; (A.S.); (B.B.); (J.K.)
| | - Justyna Krzak
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-372 Wroclaw, Poland; (A.S.); (B.B.); (J.K.)
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35
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Abstract
This paper provides a synthetic and comprehensive overview on environmentally friendly anticorrosive polymeric coatings. Firstly, the economic and environmental impact of corrosion is presented to highlight the need of anticorrosive polymeric coatings as a flexible and effective solution to protect a metal. Secondly, the implementation of regulations together with the consumer awareness for environmental considerations and protection of health are the driving force for a progressive but significant change in the sector. Therefore, within the protective organic coatings market, this article provides a review of the most recent developments in environmentally friendly solutions, including bio-based and water-borne epoxy, hyperbranched polyester for low- volatile organic compounds (VOC) coatings, waterborne polyurethane and non-isocyanate polyurethanes (NIPUs), and graphene or bio-based fillers for acrylics. Moreover, this paper outlines new trends such as smart additives, bio-based corrosion inhibitors, and functional antibiocorrosive coatings as superhydrophobics. Finally, industrially relevant applications of environmentally friendly anticorrosive polymeric coatings including solutions for marine and off-shore industries are summarized.
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Idouhli R, Oukhrib A, Khadiri M, Zakir O, Aityoub A, Abouelfida A, Benharref A, Benyaich A. Understanding the corrosion inhibition effectiveness using Senecio anteuphorbium L. fraction for steel in acidic media. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129478] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Corrosion protection application of liquid-infused surface with self-healing via regional growth of layered double hydroxide films on aluminum alloy. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125996] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhou C, Fu M, Xie H, Gong Y, Chen J, Liu J, Xin Z. Polybenzoxazine/Epoxy Composite Coatings: Effect of Crosslinking on Corrosion Resistance. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05903] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Changlu Zhou
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ming Fu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hanyu Xie
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yanwei Gong
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiawen Chen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Juan Liu
- Research Center of Analysis and Test, East China University of Science and Technology, Shanghai 200237, China
| | - Zhong Xin
- State Key Laboratory of Chemistry Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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Mechanical Properties of Protective Coatings against Marine Fouling: A Review. Polymers (Basel) 2021; 13:polym13020173. [PMID: 33418953 PMCID: PMC7825044 DOI: 10.3390/polym13020173] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022] Open
Abstract
The accumulation of marine organisms on ship hulls, such as microorganisms, barnacles, and seaweeds, represents a global problem for maritime industries, with both economic and environmental costs. The use of biocide-containing paints poses a serious threat to marine ecosystems, affecting both target and non-target organisms driving science and technology towards non-biocidal solutions based on physico-chemical and materials properties of coatings. The review reports recent development of hydrophobic protective coatings in terms of mechanical properties, correlated with the wet ability features. The attention is focused mainly on coatings based on siloxane and epoxy resin due to the wide application fields of such systems in the marine industry. Polyurethane and other systems have been considered as well. These coatings for anti-fouling applications needs to be both long-term mechanically stable, perfectly adherent with the metallic/composite substrate, and capable to detach/destroy the fouling organism. Prospects should focus on developing even “greener” antifouling coatings solutions. These coatings should also be readily addressable to industrial scale-up for large-scale product distribution, possibly at a reasonable cost.
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Reinforced Superhydrophobic Anti-Corrosion Epoxy Resin Coating by Fluorine–Silicon–Carbide Composites. COATINGS 2020. [DOI: 10.3390/coatings10121244] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
SiC was modified by fluorine-containing organic substance 1H,1H,2H,2H-trifluoro-noctyltriethoxysilane (FAS) to change its hydrophilicity from hydrophilic to superhydrophobic nanoparticles, and the optimum conditions for hydrophobicity were effectively explored. Then, different content of fluorine-modified SiC (F–SiC) nanoparticles were added to the epoxy resin (EP) matrix to prepare composite coating samples. The results showed that the surface of SiC was modified by FAS to show superhydrophobicity, and the dispersion in EP was significantly improved. After adding F–SiC, the hydrophobicity, wear resistance and corrosion resistance of the coating were significantly improved. In addition, the corrosion resistance of the composite coating containing different contents of F–SiC was analyzed through electrochemical and salt spray tests. The results showed that the corrosion resistance of the coating was the best when the addition amount was 3 wt %. In general, the composite coating with 3 wt % F–SiC had the best overall performance. Compared with the EP coating, the water contact angle of 3 wt % F–SiC/EP composite coating was increased by 62.9%, the friction coefficient was reduced by 73.5%, and the corrosion current was reduced by three orders of magnitude. This study provides a new idea for the development of ultra-wear-resistant and anti-fouling heavy-duty coatings.
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41
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Development of Al2O3.ZnO/GO-phenolic formaldehyde amine derivative nanocomposite: A new hybrid anticorrosion coating material for mild steel. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Khan A, Hassanein A, Habib S, Nawaz M, Shakoor RA, Kahraman R. Hybrid Halloysite Nanotubes as Smart Carriers for Corrosion Protection. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37571-37584. [PMID: 32686396 DOI: 10.1021/acsami.0c08953] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Novel hybrid halloysite nanotubes (HHNTs) were developed and used as smart carriers for corrosion protection of steel. For this purpose, as-received halloysite nanotubes (HNTs) were loaded with a corrosion inhibitor, imidazole (IM), by vacuum encapsulation. In the next step, a layer by layer technique was employed to intercalate another inhibitor, dodecylamine (DDA), in the polyelectrolyte multilayers of polyethylenimine and sulfonated polyether ether ketone, leading to the formation of HHNTs. During this process, IM (5 wt %) was successfully encapsulated into the lumen of HNTs, while DDA (0.4 wt %) was effectively intercalated into the polyelectrolyte layers. Later, the HHNTs (3 wt %) were thoroughly dispersed into the epoxy matrix to develop smart hybrid self-healing polymeric coatings designated as hybrid coatings. For a precise evaluation, epoxy coatings containing as-received HNTs (3 wt %) without any loading denoted to as reference coatings and modified coatings containing HNTs loaded with IM-loaded HNTs (3 wt %) were also developed. A comparative analysis elucidates that the hybrid coatings demonstrate decent thermal stability, improved mechanical properties, and promising anticorrosion properties compared to the reference and modified coatings. The calculated corrosion inhibition efficiencies of the modified and hybrid coatings are 92 and 99.8%, respectively, when compared to the reference coatings. Noticeably, the superior anticorrosion properties of hybrid coatings can be attributed to the synergetic effect of both the inhibitors loaded into HHNTs and their efficient release in response to the localized pH change of the corrosive medium. Moreover, IM shows an active release in both acidic and basic media, which makes it suitable for the protection of steel at the early stages of damage, while DDA being efficiently released in the acidic medium may contribute to impeding the corrosion activity at the later stages of deterioration. The tempting properties of hybrid coatings demonstrate the beneficial role of the development of novel HHNTs and their use as smart carriers in the polymeric matrix for corrosion protection of steel.
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Affiliation(s)
- Adnan Khan
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | - Amani Hassanein
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | - Sehrish Habib
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | - Muddasir Nawaz
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | - R A Shakoor
- Center for Advanced Materials (CAM), Qatar University, 2713 Doha, Qatar
| | - Ramazan Kahraman
- Department of Chemical Engineering, Qatar University, 2713 Doha, Qatar
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Huang H, Sheng X, Tian Y, Zhang L, Chen Y, Zhang X. Two-Dimensional Nanomaterials for Anticorrosive Polymeric Coatings: A Review. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02876] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Haowei Huang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, China
| | - Xinxin Sheng
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuqin Tian
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, China
| | - Li Zhang
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Ying Chen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Xinya Zhang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, China
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Xia Zhao, Hao H, Duan Y. A Self-Polishing Polyacrylate-g-polysiloxane Paint for Marine Antifouling Application. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x20030177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Effect of Modified Hexagonal Boron Nitride Nanoparticles on the Emulsion Stability, Viscosity and Electrochemical Behavior of Nanostructured Acrylic Coatings for the Corrosion Protection of AISI 304 Stainless Steel. COATINGS 2020. [DOI: 10.3390/coatings10050488] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this study, the effect of pure and modified hexagonal boron nitride (h-BN) nanosheet incorporation on the stability, viscosity, and electrochemical behavior of a waterborne emulsion acrylic coating was studied. The functionalization of h-BN nanoplatelets with polyacrylic acid (PAA) plasma polymerization was performed, and the successful surface modification was determined through water dispersion testing, Fourier transform infrared spectroscopy and thermogravimetric analysis, X-ray photoelectron spectroscopy, and also by transmission electronic microscopy. Later, the stability and viscosity properties of emulsion nanostructured acrylic coatings, which were previously prepared by an ultrasound-assisted mixing system, were analyzed using zeta potential and rheometry testing, respectively. The electrochemical behavior was analyzed by electrochemical impedance spectroscopy. The results prove an effective deposition of PAA films on the h-BN surfaces, which enhanced the stability and viscosity acrylic of nanostructured coatings due to the interactions between the h-BN nanoplatelets surface and emulsion acrylic paint and also with the thickener additives. On the other hand, the electrochemical analysis demonstrated a significant increase (two orders of magnitude) in corrosion resistance in the acrylic nanostructured coatings with 1 wt.% of unmodified and modified h-BN nanoplatelets concerning pure acrylic paint due to a barrier protection mechanism of corrosion inhibition. Therefore, the results demonstrate that the surface modification of h-BN by plasma polymerization (green technology) helped to solve the low dispersibility issue of BN nanosheet surfaces in a waterborne polymer matrix to obtained green nanostructured acrylic coatings with the right balance in in-can properties and corrosion inhibition of AISI 304 stainless steel.
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Corrosion Resistance of Modified Hexagonal Boron Nitride (h-BN) Nanosheets Doped Acrylic Acid Coating on Hot-Dip Galvanized Steel. MATERIALS 2020; 13:ma13102340. [PMID: 32438770 PMCID: PMC7288039 DOI: 10.3390/ma13102340] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/30/2020] [Accepted: 05/14/2020] [Indexed: 11/29/2022]
Abstract
The hexagonal boron nitride (h-BN) nanosheets modified by silane coupling agent (KH560) were doped into acrylic acid coating on the surface of galvanized steel to improve its corrosion resistance. H-BN nanosheets modified by KH560 were prepared and characterised by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The corrosion resistance of the acrylic acid coatings was measured by electrochemical testing. The results show that the corrosion current density of the coating with modified h-BN nanosheets was reduced from 2.2 × 10−5 A/cm2 to 2.3 × 10−7 A/cm2 compared with the acrylic acid coating. The impedance of the composite coating with modified h-BN is 4435 Ω·cm2, higher than the BNNS coating (2500 Ω·cm2) and the acrylic acid coating (1500 Ω·cm2). This is due to the physical barrier and electrical insulation properties of the hexagonal boron nitride (h-BN) nanosheets.
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Tailored Crosslinking Process and Protective Efficiency of Epoxy Coatings Containing Glycidyl-POSS. Polymers (Basel) 2020; 12:polym12030591. [PMID: 32151007 PMCID: PMC7182962 DOI: 10.3390/polym12030591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 02/28/2020] [Accepted: 03/03/2020] [Indexed: 11/17/2022] Open
Abstract
Versatile product protective coatings that deliver faster drying times and shorter minimum overcoat intervals that enable curing at faster line speeds and though lower energy consumption are often desired by coating manufacturers. Product protective coatings, based on silsesquioxane-modified diglycidyl ether of bisphenol-A (DGEBA) epoxy resin, are prepared through a glycidyl ring-opening polymerization using dicyandiamide (DICY) as a curing agent. As silsesquioxane modifier serves the octaglycidyl-polyhedral oligomeric silsesquioxane (GlyPOSS). To decrease the operational temperature of the curing processes, three different accelerators for crosslinking are tested, i.e., N,N-benzyl dimethylamine, 2-methylimidazole, and commercial Curezol 2MZ-A. Differential scanning calorimetry, temperature-dependent FT-IR spectroscopy, and rheology allow differentiation among accelerators’ effectiveness according to their structure. The former only contributed to epoxy ring-opening, while the latter two, besides participate in crosslinking. The surface roughness of the protective coatings on aluminum alloy substrate decreases when the accelerators are applied. The scanning electron microscopy (SEM) confirms that coatings with accelerators are more homogeneous. The protective efficiency is tested with a potentiodynamic polarization technique in 0.5 M NaCl electrolyte. All coatings containing GlyPOSS, either without or with accelerators, reveal superior protective efficiency compared to neat DGEBA/DICY coating.
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48
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Verma S, Mohanty S, Nayak SK. Preparation of hydrophobic epoxy-polydimethylsiloxane-graphene oxide nanocomposite coatings for antifouling application. SOFT MATTER 2020; 16:1211-1226. [PMID: 31899461 DOI: 10.1039/c9sm01952a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Epoxy-polydimethylsiloxane-graphene oxide (EPG) nanocomposite coatings were successfully developed by loading different wt% of graphene oxide nanosheets (GNs) into an epoxy-hydroxy-terminated-polydimethylsiloxane (EP-hPD) matrix via a facile in situ preparation technique. The inclusion of GNs into EPN led to an increase in modulus of elasticity and tensile strength up to 1570.46 MPa and 31.54 MPa, respectively, in the case of 1 wt% loading of GNs in the EP-hPD matrix. Also, an increase in the water contact angle from 90.1° to 115.2°, 104.5° and 101.7° was discerned at 1, 3 and 5 wt% loadings of GNs respectively. Taber abrasion results demonstrated a decrease in abrasion loss by 33.3% at 1 wt% loading of GNs in comparison to the unreinforced coating. An improvement in the glass transition temperature (Tg) was observed from 63.5 °C for the neat sample to 77.6 °C, 76.3 °C and 71.6 °C for the 1, 3 and 5 wt% EPG nanocomposites, respectively. An inevitable enhancement in the properties of the nanocomposites was affirmed due to the synergistic effect of GNs dispersed within the EP-hPD blend matrix. The prominent findings of this work include a minimum corrosion rate of 0.73 × 10-2 mm per year and upgradation in the antifouling performance of the nanocomposite coatings in comparison to the neat coating.
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Affiliation(s)
- Shatakshi Verma
- Central Institute of Plastics Engineering and Technology (CIPET), T.V.K. Industrial Estate, Guindy, Chennai, Tamil Nadu - 600032, India.
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Rajitha K, Mohana KNS, Mohanan A, Madhusudhana AM. Evaluation of anti-corrosion performance of modified gelatin-graphene oxide nanocomposite dispersed in epoxy coating on mild steel in saline media. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124341] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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50
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A Short Overview of Recent Developments on Antimicrobial Coatings Based on Phytosynthesized Metal Nanoparticles. COATINGS 2019. [DOI: 10.3390/coatings9120787] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The phytosynthesis of metallic nanoparticles represents an exciting new area of research, with promising perspectives, gaining in the last decades an increasing importance. Nanotechnology represents an important tool and an efficient option for obtaining particles with controlled morphology and shapes, phytosynthesized nanoparticles (NPs) being a good alternative to remove hazardous reagents. Due to the practical applications of the phytosynthesized nanoparticles, which are mainly associated with their antimicrobial potential, the abundance of scientific literature in this domain is given by researches in the phytosynthesis of metallic nanoparticles (3654 articles) and the evaluation of their antimicrobial properties (2338 papers). The application of phytosynthesized nanoparticles as antimicrobial coatings represented the subject of only 446 works, which lead us to the subject of this review paper. Application of antimicrobial coatings containing phytosynthesized nanoparticles for the development of antimicrobial textiles, other biomedical applications, protection of food (including fruits and vegetables), as well as for other types of applications based on their antimicrobial potential are covered by the present review.
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