Smart coating based on double stimuli-responsive microcapsules containing linseed oil and benzotriazole for active corrosion protection

Leal, Débora Abrantes; Riegel‐Vidotti, Izabel C.; Ferreira, M.G.S.; Marino, Cláudia Eliana Bruno

doi:10.1016/j.corsci.2017.10.009

Cited by 152 publications

(63 citation statements)

References 24 publications

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“…As an advancement, the use of multiple containers sensitive to similar or distinct stimuli, in a single polymeric coating, has gained significant attention and claimed as more effective corrosion protection route [31,32]. However, very recently, instead of using multiple containers, double-stimuli-responsive smart microcapsules have been reported as a novel route to mitigate corrosion, while reducing the cost of the protective coating [33].…”

Section: Introductionmentioning

confidence: 99%

“…Linalyl acetate is released when mechanical stimulus, i.e., an artificial crack is created. Furthermore, dodecylamine, a corrosion inhibitor, was entrapped into the layers of polyelectrolyte materials (PEI and SPEEK), using the layer-by-layer technique to develop pHsensitive multilayered urea formaldehyde microcapsules (MLUFMCs) [33][34][35][36][37]. The results evidence that coatings modified with MLUFMCs provided increased corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

et al. 2019

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The present research work focuses on the synthesis, characterization and properties of novel polyelectrolyte multilayered microcapsules used as smart additives in organic coatings for corrosion protection of steel parts. Urea formaldehyde microcapsules encapsulated with linalyl acetate (UFMCs), sensitive to mechanical stimulus, were synthesized by in situ emulsion polymerization technique. In the next step, dodecylamine, working as a pH stimulus corrosion inhibitor, was loaded into layers of polyelectrolyte molecules, polyethylenimine (PEI) and sulfonated polyether ether ketone (SPEEK). These were applied layer-by-layer over the microcapsules to form inhibitor containing multilayered urea formaldehyde microcapsules (MLUFMCs). In the next step, MLUFMCs (5.0 wt%) and UFMCs (5.0 wt%) were thoroughly dispersed into the epoxy resin and coated on cleaned steel. A comparison of the structural, thermal and anticorrosive properties indicates that coatings modified with multilayered capsules (PMLSCs) demonstrate good thermal stability, improved self-healing characteristics and higher corrosion resistance compared to the coating modified with urea formaldehyde microcapsules. The improved properties of PMLSCs can be attributed to efficient release of the encapsulated self-healing agent and corrosion inhibitor from the MLUFMCs. Therefore, epoxy coatings modified with the novel multilayered capsules may be attractive for corrosion protection of steel parts used in oil and gas and related industries.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

et al. 2019

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“…Figure 19a showed smart-coating-combined microcapsules containing linseed oil by the in situ polymerization method with polyelectrolytes layers entrapped benzotriazole (BTA) corrosion inhibitor. After application to the carbon steel surface, the coating exhibited self-healing property, which can release linseed oil under the stimulation of mechanical impact or release BTA by pH change [112]. Another novel study confirmed that the graphene oxides microcapsules containing linseed oil endowed self-healing properties to the waterborne polyurethane coatings (Figure 19b) [113].…”

Section: Perspectivesmentioning

confidence: 82%

“…(a) Schematic of the structure of the microcapsules and the self-healing mechanisms of the coating. Reprinted from[112] Copyright (2018), with permission from Elsevier; (b) Formation process of oil-containing graphene oxide microcapsules (GOMCs) and the processing of GOMCs/PU coatings. Reprinted from[113], Copyright (2017), with permission from Elsevier; (c,d) SEM images of self-healing coating before and after healing.…”

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confidence: 99%

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Zhao

et al. 2019

Coatings

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Corrosion—reactions occuring between engineering materials and their environment—can cause material failure and catastrophic accidents, which have a serious impact on economic development and social stability. Recently, super-hydrophobic coatings have received much attention due to their effectiveness in preventing engineering materials from further corrosion. In this paper, basic principles of wetting properties and corrosion protection mechanism of super-hydrophobic coatings are introduced firstly. Secondly, the fabrication methods by electrochemical surface engineering—including electrochemical anodization, micro-arc oxidation, electrochemical etching, and deposition—are presented. Finally, the stabilities and future directions of super-hydrophobic coatings are discussed in order to promote the movement of such coatings into real-world applications. The objective of this review is to bring a brief overview of the recent progress in the fabrication of super-hydrophobic coatings by electrochemical surface methods for corrosion protection of engineering materials.

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“…Studies reported that metals corrosion had been a worldwide issue and the direct or indirect costs of which were about 3–4% of gross national product in industrialized countries . There were various methods to against the metallic materials corrosion, one of the common and useful ways was coating a protective layer on metal surface.…”

Section: Introductionmentioning

confidence: 99%

Microencapsulation of oil soluble polyaspartic acid ester and isophorone diisocyanate and their application in self‐healing anticorrosive epoxy resin

Guo

Wang

et al. 2019

J of Applied Polymer Sci

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Isocyanate and amine solution are microencapsulated, respectively, via in situ polymerization to realize the self-healing function in epoxy matrix. First, the isophorone diisocyanate (IPDI) microcapsules prepared with different core/shell ratios, emulsifier dosages and emulsification rates are characterized by field emission scanning electron microscope (FE-SEM). They exhibit integral spherical shape when the core/shell ratio is 3:1 and emulsifier concentration is 2.52 wt %, and the diameter of IPDI microcapsules ranged from 2.66 μm to 11.25 μm is manufactured by adjusting emulsification rate over the range of 3000-9000 rpm. Besides, during the microencapsulation of polyaspartic acid ester (PAE), urea, tung oil, as well as aqueous isocyanate are proposed to improve the stability of PAE emulsion. SEM and FTIR results reveal that aqueous isocyanate can react with partial PAE and form polyurea (PU) layer to take protection effectively. Further, IPDI-PAE dual microcapsules are incorporated into epoxy coatings, the self-healing and anticorrosion performance of coatings with various amounts of microcapsules are investigated systematically. It was found that the degree of repair and anticorrosion are increased with increasing microcapsules loading, and the appropriate amount of microcapsules addition is 15 wt %, which corresponding to 93% repair efficiency.

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Smart coating based on double stimuli-responsive microcapsules containing linseed oil and benzotriazole for active corrosion protection

Cited by 152 publications

References 24 publications

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Microencapsulation of oil soluble polyaspartic acid ester and isophorone diisocyanate and their application in self‐healing anticorrosive epoxy resin

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