Microencapsulation of a coconut oil-based alkyd resin into poly(melamine–urea–formaldehyde) as shell for self-healing purposes

Khorasani, Saied Nouri; Ataei, Shahla

doi:10.1016/j.porgcoat.2017.05.014

Cited by 74 publications

(44 citation statements)

References 35 publications

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“…This is a releasing material dispersed into the coating allowing the polymerization or crosslinking to reform a film, filling up the defects when the coating is scratched. 2 In the recent time, there have been a number of reports related to microcapsules containing healing agent, which is highly capable of utilizing in selfhealing coatings: poly(urea-formaldehyde) (PUF) covering dicyclopentadiene with the self-healing of epoxy resin, [3] PUF containing alkyd resin from palm oil, [4] PUF containing epoxy resin, [5] PUF containing linseed oil, [6] poly(melamine-formaldehyde) containing epoxy, [7] MUF containing Bisphenol A diglycidyl ether, 8 MUF containing Sulfur applied in rubber, [9] MUF containing alkyd resin from coconut oil, [10] etc.…”

Section: Introductionmentioning

confidence: 99%

Assessment of alkyd paint's self‐healing ability with microcapsules foly(melamine‐urea‐formaldehyde) walled alkyd resin

Chau

2019

Vietnam Journal of Chemistry

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Recently, microcapsule containing self-healing agents and its application in coatings regarding corrosive resistance has played a pivotal role in prolonging the shelf-life of materials. To optimize anti-corrosive ability of alkyd paint, this research has concentrated on synthesis of microcapsules based on poly(melamine-urea-formaldehyde) (PMUF) walled alkyd resin derived from soybean oil and evaluating self-healing ability of alkyd paint embedding these microcapsules. The advantages of the PMUF shell were studied such as enhancing the durability of shell layers, optimizing the broken capability of microcapsules through investigating the agitation rate and dispersing time due to the fact that supplementing melamine (6 wt% of the total amount of UF) makes the shells stronger, facilitating the dispersing process in a short time but high self-healing efficiency (used only 3 wt% of microcapsules). Additionally, alkyd core from soybean oil was used to synchronize with the alkyd paint, thereby homogenizing the coating characteristics and bettering the self-healing ability and corrosive resistance. The results showed the microcapsules' characteristics and morphology, and demonstrated the successful self-healing of microcapsules via Fourier Transform Infrared Spectroscopy (FTIR), particle sizes distribution, Scanning Electron Microscopy (SEM), Electrochemical Impedance Spectroscopy (EIS), tests in NaCl aqueous solution and Q-Sun instrument.

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Section: Introductionmentioning

confidence: 99%

Assessment of alkyd paint's self‐healing ability with microcapsules foly(melamine‐urea‐formaldehyde) walled alkyd resin

Chau

2019

Vietnam Journal of Chemistry

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“…Hollow microcapsules were prepared following the method proposed by Khorasani and colleagues 27 . In a 250‐mL beaker, 0.635 g sodium dodecyl sulfate (surfactant emulsifier) was added to 150 mL deionized water.…”

Section: Methodsmentioning

confidence: 99%

Dual microcapsules based epoxy/polyethyleneimine autonomous self‐healing system for photo‐curable coating

Tezel

Çi̇ği̇l

Kahraman

2020

Polymers for Advanced Techs

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Self‐healing coatings were fabricated by adding two different epoxy and polyethyleneimine microcapsules to epoxy‐polyester acrylate resin. The first capsule contained polyethyleneimine and the second capsule contained a commercial epoxy resin. Polyethyleneimine (PEI) microcapsules were prepared by filling PEI into hollow poly(melamine‐urea‐formaldehyde) (PMUF)‐shelled polymeric microcapsules. Epoxy microcapsules were prepared by coating with a poly(urea‐formaldehyde) (PUF)‐shelled material using in‐situ polymerization. Using thermogravimetric analysis (TGA), the healing agent contents of the microcapsules for epoxy and PEI were determined to be 55% and 49%, respectively. Moreover, using a zeta‐sizer, the mean sizes of the microcapsules for epoxy/PUF and PEI/PMUF were determined to be 185 nm and 377 nm, respectively. Both capsule types were added to the epoxy‐polyester acrylate‐based photo‐curable coating formulation in the amount of 2% by weight. The coating formulation was applied to plexiglass surface, then cured with UV light and artificial scratches were made on the coating surface. At the end of day two, the SEM images revealed that coating successfully self‐healed the scratch.

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“…Self‐healing materials were proposed in order to increase the lifetime of materials with more confidence during the service . Encapsulating a healing agent in nanofibers has attracted the researchers’ attention since 2010 …”

Section: C/s Nanofibersmentioning

confidence: 99%

Recent advances in core/shell bicomponent fibers and nanofibers: A review

Naeimirad

Ali

Kotek

et al. 2018

J of Applied Polymer Sci

146

103

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There has been a steady progress in developing synthetic fibers in the past few years. Bicomponent fibers and nanofibers in a core/shell (C/S) configuration, including two dissimilar materials have presented unusual potential for use in many novel applications. These fibers can be produced using a variety of materials via different techniques i.e., coaxial melt spinning and electrospinning. In this review, we discuss the recent advances in C/S fibers and nanofibers' production. The first part has been assigned to the bicomponent fibers manufacturing technology, while production and applications of C/S nanofibers have been described in the second part.

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Microencapsulation of a coconut oil-based alkyd resin into poly(melamine–urea–formaldehyde) as shell for self-healing purposes

Cited by 74 publications

References 35 publications

Assessment of alkyd paint's self‐healing ability with microcapsules foly(melamine‐urea‐formaldehyde) walled alkyd resin

Assessment of alkyd paint's self‐healing ability with microcapsules foly(melamine‐urea‐formaldehyde) walled alkyd resin

Dual microcapsules based epoxy/polyethyleneimine autonomous self‐healing system for photo‐curable coating

Recent advances in core/shell bicomponent fibers and nanofibers: A review

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