Comparative Study on Microencapsulated of Natural and Waste Sunflower Oil as Self-Healing Agent

Abstract:

Microencapsulation of natural vegetable oil as a self-healing agent on metal coating became demanded lately. This paper underlines the microcapsule containing natural and wastes sunflower oil as a self-healing agent that was fabricated for the backbone of corrosion coatings. The results in this paper indicated the distinguished potential of waste sunflower oil as compared to natural sunflower oil. The diameter of microcapsules synthesized from natural sunflower oil and waste sunflower oil both in range of 3-4 µm. The shell of microcapsules microencapsulated from natural sunflower oil showed rough micro-structure while the shell of microcapsules microencapsulated from waste sunflower oil showed smooth micro-structure. The main parameter studied in this research was the varient of stirring speed during the process of microencapsulation. The involvement of stirring speed starts from 200 to 400 rpm. The microcapsules undergo varient of stirring speed analyzed on the yield and core content of microcapsules. The microcapsules from natural produced 29-50% while waste resources bring 26-48% of yield productions. The core content of microencapsulated natural sunflower oil generates 55-64% core content as comparing with waste sources which produce 56-67% of core content. It can be concluded that it was proved that sunflower oil could be considered as an alternative resource for self-healing agent in metal coating either encapsulated from natural or waste raw materials. The incorporation of green and natural material as a self-healing agent significantly influences the sustaining the environment to the safest stage.

• Periodical: Materials Science Forum (Volume 1010)
• Pages: 439-444
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1010.439
• Online since: September 2020
• Authors: Zulkhibri Baharom*, Maizlinda Izwana Idris, Tee Chuan Lee, Hasan Zuhudi Abdullah
• Keywords: Corrosion Coatings, Microencapsulation, Self-Healing, Sunflower Oil

References

[1] M. Ghorbanzadeh Ahangari, A. Fereidoon, M. Jahanshahi, and N. Sharifi, Effect of nanoparticles on the micromechanical and surface properties of poly(urea-formaldehyde) composite microcapsules,, Compos. Part B Eng., vol. 56, p.450–455, (2014).

DOI: 10.1016/j.compositesb.2013.08.071

[2] B. Z. Dlugogorski, E. M. Kennedy, and J. C. Mackie, Low temperature oxidation of linseed oil : a review,, Fire Sci. Rev., vol. 1, no. 3, p.1–36, (2012).

DOI: 10.1186/2193-0414-1-3

[3] S. H. Boura, M. Peikari, A. Ashrafi, and M. Samadzadeh, Self-healing ability and adhesion strength of capsule embedded coatings - Micro and nano sized capsules containing linseed oil,, Prog. Org. Coatings, vol. 75, no. 4, p.292–300, (2012).

DOI: 10.1016/j.porgcoat.2012.08.006

[4] K. Thanawala, N. Mutneja, A. S. Khanna, and R. K. S. Raman, Development of Self-Healing Coatings Based on Linseed Oil as Autonomous Repairing Agent for Corrosion Resistance,, Materials (Basel)., vol. 7, no. 11, p.7324–7338, (2014).

DOI: 10.3390/ma7117324

[5] N. Shahabudin, R. Yahya, and S. N. Gan, Microcapsules filled with a palm oil-based alkyd as healing agent for epoxy matrix,, Polymers (Basel)., vol. 8, no. 4, p.125, (2016).

DOI: 10.3390/polym8040125

[6] S. N. Khorasani, S. Ataei, and R. E. Neisiany, Microencapsulation of a coconut oil-based alkyd resin into poly ( melamine – urea – formaldehyde ) as shell for self-healing purposes,, Prog. Org. Coatings, vol. 111, no. May, p.99–106, (2017).

DOI: 10.1016/j.porgcoat.2017.05.014

[7] Z. Baharom, N. B. Baba, R. Ramli, M. I. Idris, and H. Z. Abdullah, Microencapsulation of natural self-healing agent as corrosion coating,, in AIP Conference Proceedings, 2019, vol. 2068, no. February, p.020103.

DOI: 10.1063/1.5089402

[8] H. Li, Y. Cui, Z. Li, Y. Zhu, and H. Wang, Fabrication of microcapsules containing dual-functional tung oil and properties suitable for self-healing and self-lubricating coatings,, Prog. Org. Coatings, vol. 115, no. July 2017, p.164–171, (2018).

DOI: 10.1016/j.porgcoat.2017.11.019

[9] C. Douny et al., Linseed oil presents different patterns of oxidation in real-time and accelerated aging assays,, Food Chem., vol. 208, p.111–115, (2016).

DOI: 10.1016/j.foodchem.2016.04.010

[10] H. Abdipour, M. Rezaei, and F. Abbasi, Synthesis and characterization of high durable linseed oil-urea formaldehyde micro / nanocapsules and their self-healing behaviour in epoxy coating,, Prog. Org. Coatings, vol. 124, no. July, p.200–212, (2018).

DOI: 10.1016/j.porgcoat.2018.08.019

[11] G. K. Çömlekçi and S. Ulutan, Coatings Encapsulation of linseed oil and linseed oil based alkyd resin by urea formaldehyde shell for self-healing systems,, Prog. Org. Coatings, vol. 121, no. May, p.190–200, (2018).

DOI: 10.1016/j.porgcoat.2018.04.027

[12] Z. Baharom, M. I. Idris, T. C. Lee, and H. Z. Abdullah, Effects of surfactant concentration on microencapsulated waste vegetable oil,, in AIP Conference Proceedings, 2019, vol. 2068, no. February, p.020105.

DOI: 10.1063/1.5089404

[13] T. Siva and S. Sathiyanarayanan, Self healing coatings containing dual active agent loaded urea formaldehyde ( UF ) microcapsules,, Prog. Org. Coatings, vol. 82, p.57–67, (2015).

DOI: 10.1016/j.porgcoat.2015.01.010

[14] K. Thanawala, A. S. Khanna, and R. K. S. Raman, Development of Self-Healing Coatings Using Encapsulated Linseed oil and Tung Oil as Healing Agents,, NACE Int., vol. 7310, p.1–9, (2016).

DOI: 10.3390/ma7117324

[15] M. Behzadnasab, M. Esfandeh, S. M. Mirabedini, M. J. Zohuriaan-Mehr, and R. R. Farnood, Preparation and characterization of linseed oil-filled urea-formaldehyde microcapsules and their effect on mechanical properties of an epoxy-based coating,, Colloids Surfaces A Physicochem. Eng. Asp., vol. 457, no. 1, p.16–26, (2014).

DOI: 10.1016/j.colsurfa.2014.05.033