Chia oil performance as healing agent for epoxy resin-based smart coatings

Silva, Ana Carolina Moreira; Renzetti, Reny Ângela; Sakita, Alan Massayuki Perdizio; Lavall, Rodrigo L.; Andrada, Andreza de Sousa; Rohatgi, Pradeep K.; Silva, Mercês Coelho da

doi:10.1007/s00289-021-03924-2

Polym. Bull.

2021

DOI: 10.1007/s00289-021-03924-2

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Chia oil performance as healing agent for epoxy resin-based smart coatings

Ana Carolina Moreira Silva

Reny Ângela Renzetti

Alan Massayuki Perdizio Sakita

et al.

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Cited by 5 publications

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Recent Advances in Smart Emulsion Materials: From Synthesis to Applications

Johnson,

Koh

2024

Adv Eng Mater

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Smart emulsions are both versatile additives to smart materials and functional smart materials themselves, acting as active components and structural elements driving innovative development. Emulsions offer versatility, ease of manipulation, and stability to smart materials. This review explores the multifaceted roles of emulsions, examining their formulation methods, applications, and role as building blocks in smart materials. The significance of emulsions in smart materials is discussed for applications such as drug delivery and adaptive coatings, as well as their role in stimuli‐responsive colloidal systems and nanocomposites. The smart emulsions reviewed encompass all manner of material types, including fluid and solid/polymerized smart materials. These include both emulsions with dynamic properties and emulsions used in the process of synthesizing other materials. Smart emulsions are categorized by application into shape memory, self‐healing, biological, and stimuli‐responsive, with analysis of formulation methods, metrics, and methods of final incorporation. Smart emulsions can be found initially as fluid systems and some react into solid polymers, tailored to meet functional needs. A comparative analysis reveals emerging trends such as coupling coating self‐healing/corrosion inhibition and use of waterborne polyurethanes. The discussion of smart emulsions concludes by outlining challenges and future directions for leveraging smart emulsions.

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Recent Advances in Smart Emulsion Materials: From Synthesis to Applications

Johnson,

Koh

2024

Adv Eng Mater

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Screening of vegetable drying oils as potential self‐healing agents for smart anticorrosive coatings

Nunes,

Bendinelli,

Aoki

2024

J Americ Oil Chem Soc

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The microencapsulation of vegetable drying oils is an established strategy to develop smart coatings with self‐healing properties. The literature has mostly focused on evaluating linseed oil (LO) and tung oil (TO) as self‐healing agents. There is a lack of studies regarding the application of other drying oils in smart coatings and a comparison between different vegetable oils as self‐healing agents has yet to be carried out. In this work, the self‐healing potential of different seed oils was assessed in terms of their drying and anticorrosive properties. The investigation was focused on chia oil (CO), dehydrated castor oil (DCO), LO, and TO. Drying times were assessed under different cobalt (Co) drier contents. Drying kinetics was carried out by monitoring changes in viscosity with time and following the evolution of infrared spectra during drying. Barrier properties of the polymerized oil‐based coatings were assessed by electrochemical impedance spectroscopy of carbon steel coated samples during immersion in 0.1 mol/L NaCl solution. It was found that the type of oil and concentration of drier play an important role on favoring the self‐healing effect. The concentration of 0.2 wt% Co was found optimum for encapsulation to accelerate self‐healing, as oils dry up to three times faster in comparison with the lowest drier content studied (0.025 wt% Co). TO obtained the best drying properties, with set‐to‐touch times around 1 h and rapidly forming a tack‐free film, however, TO coatings ended up being extremely cracked, which compromised its barrier properties. LO obtained the slowest drying, while CO and DCO exhibited intermediate drying between TO and LO. DCO showed the best anticorrosive properties among investigated oils, as its coating was the only one that did not show any decrease in impedance with time, whereas TO and LO coatings presented a decrease in up to one order of magnitude in impedance. Overall, the good drying and barrier properties of DCO strongly stimulate its use as feedstock for self‐healing coatings. Results are discussed in terms of fatty acid composition and oxidative polymerization mechanisms. Conclusions help with the selection of seed oils as self‐healing agents that can further extend the lifetime of anticorrosive coatings.

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Effect of graphene incorporation on properties of epoxy-based self-healing coatings

et al. 2023

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Chia oil performance as healing agent for epoxy resin-based smart coatings

Cited by 5 publications

References 38 publications

Recent Advances in Smart Emulsion Materials: From Synthesis to Applications

Recent Advances in Smart Emulsion Materials: From Synthesis to Applications

Screening of vegetable drying oils as potential self‐healing agents for smart anticorrosive coatings

Effect of graphene incorporation on properties of epoxy-based self-healing coatings

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