Investigation of Smart Nanocapsules Containing Inhibitors for Corrosion Protection of Copper

Jafari, Amir; Hosseini, Seyed Mohammad Ali; Jamalizadeh, Effat

doi:10.1016/j.electacta.2010.07.065

Cited by 69 publications

(38 citation statements)

References 28 publications

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“…The obtained results were consistent with the results of capsules with a polyelectrolyte shell Jafari et al, 2010;Kohler et al, 2005). It can be concluded that these solution parameters are capable of behaving as smart agents to affect the release rate of BTA into solutions containing modified capsules, which provides a means to control corrosion in the solution.…”

Section: Discussionsupporting

confidence: 92%

Corrosion protection of coatings doped with inhibitor-loaded nanocapsules

Khajouei

Jamalizadeh

2015

Anti-Corrosion Methods and Materials

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Purpose -The purpose of this paper was to study the corrosion resistance of AA2024 alloy using surfactant-modified halloysite nanocapsules capable of holding benzotriazole (BTA) as the corrosion inhibitor and discharging it into the solution. Design/methodology/approach -The effect of surfactant shells was studied by surfactant-modified halloysite nanotubes fabricated through assembly of two types of cationic surfactants. The zeta potential and size distribution measurements were performed using a Zetasizer Nano. The concentration of BTA during release into the solution was detected by using a UV-vis spectrophotometer. The anti-corrosion activity of nanocapsules as free agents with respect to the AA2024 alloy was investigated using the potentiodynamic scan (PDS) method. An epoxy resin doped with nanocapsules was used as an anti-corrosion coating deposited on the AA2024 alloy. The corrosion protection performance of coatings was studied by using the electrochemical impedance spectroscopy (EIS) method. Findings -The results indicate that the release of the inhibitor from nanocapsules depends on the surfactant shell components. The PDS results confirmed the feasibility of developing "smart" corrosion protection by inhibitor-loaded nanocapsules. The results of EIS measurements showed that the coating with the nanocapsules exhibited enhanced corrosion protection in comparison with the undoped coating. Originality/value -The findings of this paper indicate that surfactant-modified halloysite nanocapsules can be added to epoxy resin coatings to improve their corrosion protective properties for the AA2024 alloy.

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Section: Discussionsupporting

confidence: 92%

Corrosion protection of coatings doped with inhibitor-loaded nanocapsules

Khajouei

Jamalizadeh

2015

Anti-Corrosion Methods and Materials

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“…18.10 ) demonstrated that they have an outer diameter of 50 ± 5 nm and an inner lumen diameter of 15-20 nm with a constant thickness throughout the cut sample. The length size of halloysite particles has been reported within 1-15 μm [ 77 ]. Scanning electron microscopy (SEM) is another technique used by many researchers [ 44 , 48 ] for studying the morphology and thickness of polymer-based nanocomposite coatings.…”

Section: Advanced Characterization Of Nanocomposite Coatings For Corrmentioning

confidence: 99%

Polymer-Based Nanocomposite Coatings for Anticorrosion Applications

Nazari

Shi

2016

Industrial Applications for Intelligent Polymers and Coatings

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The successful use of polymeric coatings for corrosion prevention or mitigation is often hindered by their inherently porous microstructure that fails to resist the ingress of detrimental species and/or by their vulnerability to damage by surface abrasion, wear, or scratches. Incorporation of nanomaterials in polymeric coatings can greatly improve their barrier performance. While the last decade has seen a substantial amount of research on polymeric nanocomposite coatings, the knowledge underlying the critical roles nanomaterials play remains scattered. This chapter discusses the utilization of nanotechnology to greatly enhance the properties of polymer-based coatings for anticorrosion applications, by modifying the microstructure of the coating bulk or endowing it with additional functionality. It starts with a brief discussion of the relevant knowledge base, including: microstructure of polymer nanocomposites, infl uence of nanomodifi cation on properties of polymeric coatings, fabrication approaches, and the use of polymeric nanocoating as a carrier for corrosion inhibitors. It also provides a review of technological advances in the use of nanotechnology to produce high-performance polymeric coatings with outstanding corrosion resistance and other relevant properties. The chapter concludes with a snapshot review of the advanced characterization of nanocomposite coatings for corrosion protection.

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“…They can respond to environmental changes (e.g., pH [1][2][3][4][5], salt [6], redox [7], laser [8]) to achieve controlled and sustained release for long-term corrosion protection. For example, numerous inhibitor-containing micro/nanoparticles have been developed based on polyelectrolytes [9][10][11][12][13][14]. Triggered by environmental variations, these particles become more swollen due to electrostatic repulsion between partially ionized polymer chains, causing more rapid inhibitor release.…”

Section: Introductionmentioning

confidence: 99%