Effective incorporation of ZnO nanoparticles by miniemulsion polymerization in waterborne binders for steel corrosion protection

Chimenti, Stefano; Vega, Jesús Manuel; Aguirre, Miren; García-Lecina, Eva; Díez, Javier López; Grande, Hans‐Jürgen; Paulis, Marı́a; Leiza, José R.

doi:10.1007/s11998-017-9958-x

Cited by 15 publications

(11 citation statements)

References 36 publications

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“…Innovation in waterborne polymer protective coatings is directed toward development of functional coatings by turning their action from passive protection toward active performance. As a result, wide range of functional coatings with high performance in self‐healing, anticorrosion, or UV protection has been developed. Protection against the UV irradiation especially for outdoor applications has shown to be one of the most important tools for development of long lasting coatings.…”

Section: Introductionmentioning

confidence: 99%

“…This problem was tackled by use of in situ miniemulsion polymerization which as heterogeneous process that permits physical separation of the free radicals and the scavenging materials within different phases. Miniemulsion polymerization is a technique of choice to produce waterborne polymer composites . As the G/CNT mixtures were dispersed in water, together with surface active material they formed the aqueous phase of the miniemulsion.…”

Section: Introductionmentioning

confidence: 99%

“…Miniemulsion polymerization is a technique of choice to produce waterborne polymer composites. [2,3,34,35] As the G/CNT mixtures were dispersed in water, together with surface active material they formed the aqueous phase of the miniemulsion. The organic phase composed of monomer mixture (usual polymer coating formulation made of methyl methacrylate (MMA) and butyl acrylate (BA) in 50/50 wt% ratio), oil soluble initiators (to form the free radicals within monomer droplets) and costabilizer (to prevent the diffusional droplet degradation).…”

Section: Introductionmentioning

confidence: 99%

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High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

Prosheva

Aboudzadeh

Leal

et al. 2019

Part & Part Syst Charact

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Ultraviolet (UV) degradation is one of the most important challenges of waterborne coatings in exterior applications. One of the ways to address this issue is addition of radical scavenging species within the polymer matrix. Herein, hybrids of graphene (G) and multiwall carbon nanotubes (CNTs) in different ratios are used as radical scavenging species. Evaluated by electron paramagnetic resonance spectroscopy, it is found that the hybrid made of G/CNTs in ratio of 10:1 efficiently captures and quenches the free radicals. The waterborne polymer composites containing 1 wt% of hybrid G/CNT are synthesized by in situ miniemulsion free radical polymerization using a water soluble initiator. However, due to excellent efficiency to capture free radicals, the polymerization performed using water soluble initiators in the presence of 10:1 G/CNT filler is hindered. This is resolved by physical separation of the free radicals and the scavenging materials within different phases by use of oil soluble initiator. The resulting polymer composites, beside having excellent mechanical resistance, present exceptional stability under accelerated aging conditions during 400 h, suppressing almost completely the UV photodegradation. This is attributed to the efficient radical scavenging of the G/CNTs hybrid filler distributed within polymer matrix, resulting in high‐performance UV protective waterborne composite coatings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

Prosheva

Aboudzadeh

Leal

et al. 2019

Part & Part Syst Charact

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“…Waterborne Acrylic/CeO 2 Nanocomposites for UV Blocking Clear Coats http://dx.doi.org/10.5772/intechopen.81332 anticorrosion properties have been improved. It was demonstrated that the incorporation of the ZnO nanoparticles by blending was not enough to improve the corrosion protection, whereas when the nanoparticles were encapsulated and hence, well distributed in the polymeric film, the benefits were substantial [74]. Recently, many authors' investigation has been directed to improve anticorrosion properties with the incorporation of CeO 2 nanoparticles.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Waterborne Acrylic/CeO2 Nanocomposites for UV Blocking Clear Coats

Aguirre¹,

Paulis²,

Leiza³

2019

Cerium Oxide - Applications and Attributes

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The encapsulation of inorganic nanoparticles into polymer particles opens the door to countless applications taking advantage of the properties of both phases. In this chapter the UV absorbing capacity of CeO 2 nanoparticles and the film forming capacity of acrylic polymers are combined. A synthetic route to produce waterborne acrylic/CeO 2 hybrid nanocomposites for UV absorbing coatings applications is presented. This strategy leads to encapsulated morphology of the CeO 2 nanoparticles into the polymer particles and therefore to the lack of agglomeration during film formation. A mathematical model developed for inorganic/organic hybrid systems is able to explain the morphology evolution from the initial monomer droplet to the polymer particles. The films cast from these latexes are transparent and show excellent UV absorption that increases with the amount of cerium oxide nanoparticles in the hybrid latex. Finally, the photoactivity behavior that the CeO 2 nanoparticles may have on the polymeric matrix is studied, discarding additional effects on the acrylic polymer matrix.Cerium Oxide -Applications and Attributes 106[27] Chiu F-C, Lai C-M. Optical and electrical characterizations of cerium oxide thin films.Journal of Physics D: Applied Physics. 2010;43(7):075104[28] Christensen PA, Dilks A, Egerton TA. Infrared spectroscopic evaluation of the photodegradation of paint. Part I. The UV degradation of acrylic films pigmented with titanium

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“…Cathodic electrodeposition of paints, also known as e-coat or cathodic painting, denotes an application paint method used to coat metals with organic coatings. In cathodic electrodeposition, water is used as dispersive medium and the formulations are heavy-metals free (Romano et al, 2011;Chimenti et al, 2017;Fedel, 2017). The water-based formulations, constituted of polymer and stabilized additives are deposited onto the surface of the cathode, i.e., metal to be coated, under the application of an electric field (Wicks et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole Modified E-Coat Paint for Corrosion Protection of Aluminum AA1200

et al. 2020

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This article reports the potential use of Polypyrrole (PPy) particles as anticorrosive additive on an epoxy water-based paint to increase the corrosion protective property of aluminum-coated panels. AA1200 aluminum panels were painted using the electrophoretic deposition method and the coatings with different concentrations of PPy particles were tested. PPy particles were synthetized by oxidative polymerization of pyrrole (Py) with iron (III) chloride hexahydrate (FeCl 3 .6H 2 O) in the presence of dodecylbenzenesulfonic acid (DBSA). Electrically conducting PPy particles (6.5 S cm −1) were obtained with a size average of 154 nm. The as-prepared PPy particles were added into a water-based epoxy paint and AA1200 panels were coated via electrophoretic deposition method. The corrosion protective properties of e-coated AA1200 panels were evaluated by means of electrochemical impedance spectroscopy over prolonged exposure time in neutral non-aerated 0.1 M sodium chloride NaCl electrolyte. In particular, the addition of 0.4% by weight PPy has improved the coating corrosion protective property with respect to epoxy clearcoat and exhibited the highest value of impedance modulus at low frequency among the studied coatings.

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Effective incorporation of ZnO nanoparticles by miniemulsion polymerization in waterborne binders for steel corrosion protection

Cited by 15 publications

References 36 publications

High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

Waterborne Acrylic/CeO2 Nanocomposites for UV Blocking Clear Coats

Polypyrrole Modified E-Coat Paint for Corrosion Protection of Aluminum AA1200

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