Cross-linking and silanization of clay-based multilayer films for improved corrosion protection of steel

Long, Carolyn T.; Chen, Lin; Iverson, Ethan T.; Castaneda, Homero; Grunlan, Jaime C.

doi:10.1007/s10853-021-06706-3

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…It can be practicable to leverage the 2D intrinsic property of Ti 3 C 2 MXene and the reinforcing impact of inorganic clays such as montmorillonite (MMT) to improve the thermal/mechanical properties of organic coatings. 38,39 Multilayer Ti 3 C 2 MXene was initially synthesized in this work by etching Ti 3 AlC 2 as the MAX phase, followed by in situ polymerization of aniline monomers in Ti 3 C 2 /MMT nanocomposites. The resulting phase included equally anchoring the Ti 3 C 2 MXene/PANI/MMT nanocomposites on the polyester/epoxy powder coating to act as a trap and prevent the entrance of corrosive electrolytes.…”

Section: Introductionmentioning

confidence: 99%

“…Even though conductive PANI has high anti-corrosion capabilities, its presence weakens the mechanical strengths of organic coatings. It can be practicable to leverage the 2D intrinsic property of Ti 3 C 2 MXene and the reinforcing impact of inorganic clays such as montmorillonite (MMT) to improve the thermal/mechanical properties of organic coatings. , …”

Section: Introductionmentioning

confidence: 99%

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Ti₃C₂ MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Nazarlou

Hosseini

Dorraji

et al. 2023

ACS Appl. Nano Mater.

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Solvent-free powder coatings have become very popular in the coating industry in replacing conventional liquid coatings for the last decades. However, poor adhesion of powder coatings to the substrate and micropores inevitably created during the curing process of coatings lead to localized corrosion and reduced mechanical resistance. For this purpose, Ti 3 C 2 MXene/ polyaniline (PANI)/montmorillonite (MMT) nanocomposites with superior conductivity and adhesion capabilities were incorporated into the eco-friendly powder coating. The as-synthesized nanocomposites were analyzed using various techniques such as Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, field-emission scanning electron microscopy, and Raman spectroscopy. To evaluate the effectiveness of the powder coating in preventing corrosion on a mild steel substrate, two methods were employed: potentiodynamic polarization and electrochemical impedance spectroscopy. The electrochemical tests revealed that an excellent dispersion of 1.5 wt % Ti 3 C 2 MXene/ PANI/MMT nanosheets in a polyester/epoxy powder coating resulted in superior anti-corrosion performance (4.8 × 10 6 Ω) after 42 days of immersion in 3.5 wt % NaCl as compared to blank samples (7.2 × 10 2 Ω). According to Tafel analysis, the corrosion potential of the optimal sample is −0.062 V, which is more positive than that of the pristine powder coating (−0.83 V). The polarization resistance (R p ) and corrosion current (i corr ) of the optimal sample are determined to be 3.39 × 10 6 Ω•cm 2 and 7.69 × 10 −9 A•cm −2 , respectively. Moreover, the optimal sample marginally increased the hardness (229.42 MPa) compared to the pure sample (152.68 MPa) due to the synergistic effect of Ti 3 C 2 MXene and flake-like MMT nanoparticles, which results in an improvement in the mechanical strength of powder coatings. Additionally, the presence of PANI caused further crosslinking and modulation of the electrical conductivity of the produced nanocomposites. The present study proposes a practical method to enhance the mechanical and shielding properties of solvent-free powder coatings, making them suitable for use in various real-world applications, including commercial, medical, and household sectors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ti₃C₂ MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Nazarlou

Hosseini

Dorraji

et al. 2023

ACS Appl. Nano Mater.

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“…The resulting multilayers are assembled through the formation of ionic bonds and can generate a plethora of functionalities. − This deposition technique is attractive because it uses water-based solutions under ambient conditions and can be applied to a multitude of substrates. These multilayer thin films can exhibit flame retardancy, , gas barrier, , antibacterial protection, , corrosion protection, , and heat shielding. , …”

Section: Introductionmentioning

confidence: 99%

“…29−32 This deposition technique is attractive because it uses water-based solutions under ambient conditions and can be applied to a multitude of substrates. These multilayer thin films can exhibit flame retardancy, 33,34 gas barrier, 35,36 antibacterial protection, 37,38 corrosion protection, 39,40 and heat shielding. 41,42 In this study, the dielectric breakdown strength of fully organic polyelectrolyte multilayer thin films is investigated.…”

Section: ■ Introductionmentioning

confidence: 99%

Extraordinarily High Dielectric Breakdown Strength of Multilayer Polyelectrolyte Thin Films

et al. 2022

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The increased use of high-voltage electronics requires higher performance dielectric materials. These electrically insulating layers need as high of a dielectric breakdown strength as possible. Herein, multiple polyelectrolyte layer-by-layer assemblies were studied as high-voltage insulators. The influences of molecular weight, polymer backbone architecture, and thermal cross-linking were investigated. It was found that increasing the molecular weight of either the polycation or polyanion increases the breakdown strength due to removal of chain ends that can act as breakdown initiating sites. It was also found that a linear polymer backbone architecture leads to higher breakdown strength when compared to branched polymer architectures. Lastly, through thermal cross-linking, the breakdown strength is increased, and the previously mentioned molecular weight and architecture effects are diminished. These 200–400 nm thick polymer multilayer films exhibit breakdown strengths of ∼300–400 kV/mm. Their simple water-based processing makes them an interesting new option for protecting various types of electronics.

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“…Layer-by-layer (LbL) assembly is a deposition technique in which cationic and anionic polyelectrolytes and/or inorganic materials are alternately deposited and most typically held together via electrostatic interactions to yield a multilayer thin film. This coating method has been shown to impart flame retardancy, [16,17] corrosion protection, [18,19] heat shielding, [20,21] gas barrier, [22,23] and more recently, and high dielectric breakdown strength. [24] When nanoplatelets are integrated into an LbL coating, typically as the anionic species, it resembles a nanobrick wall of platelets held together with a thin polymer mortar.…”

Section: Introductionmentioning

confidence: 99%

High Dielectric Breakdown Strength Nanoplatelet‐Based Multilayer Thin Films

Palen

Iverson

Rabaey

et al. 2022

Macro Materials & Eng

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Dielectric materials that can withstand high voltages are of great interest due to the growing need for high‐performance insulation systems in electronics. Polymer nanocomposites have gained popularity as electrical insulators due to their processability, high operating voltage, and tortuous paths for current flow created by the nanoparticles in the polymer matrix. The dielectric breakdown strength of a relatively thick multilayer thin film containing polyethylenimine (PEI) and vermiculite clay (VMT), thickened with tris(hydroxymethyl)aminomethane (tris), is evaluated as a function of bilayers (BL) deposited. The resulting nanobrick wall structure of this clay‐based assembly is ideal for protective insulation. An 8 BL PEI+tris/VMT film achieves a dielectric breakdown strength of 245 kV mm−1, with a thickness of 5 µm. With increasing bilayers, the breakdown strength gradually decreases, but 20 BL of PEI+tris/VMT achieves a breakdown voltage of 2.36 kV. This nanoplatelet‐based system is the first “thick growing” layer‐by‐layer deposited film to be used as an insulating layer. Its unusually high breakdown strength can be useful for the protection of various high voltage electronics.

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Cross-linking and silanization of clay-based multilayer films for improved corrosion protection of steel

Cited by 9 publications

References 30 publications

Ti₃C₂ MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Ti₃C₂ MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Extraordinarily High Dielectric Breakdown Strength of Multilayer Polyelectrolyte Thin Films

High Dielectric Breakdown Strength Nanoplatelet‐Based Multilayer Thin Films

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Cross-linking and silanization of clay-based multilayer films for improved corrosion protection of steel

Cited by 9 publications

References 30 publications

Ti3C2 MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Ti3C2 MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Extraordinarily High Dielectric Breakdown Strength of Multilayer Polyelectrolyte Thin Films

High Dielectric Breakdown Strength Nanoplatelet‐Based Multilayer Thin Films

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Ti₃C₂ MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties

Ti₃C₂ MXene/Polyaniline/Montmorillonite Nanostructures toward Solvent-Free Powder Coatings with Enhanced Corrosion Resistance and Mechanical Properties