Pengaruh Penambahan Poli Vinil Alkohol (PVA) pada Enkapsulasi Minyak Kacang Kenari dalam Urea-Formaldehid untuk Aplikasi Self-Healing Coating
DOI:
https://doi.org/10.31479/jtek.v10i2.226Keywords:
self-healing coating, walnut oil, encapsulation, urea-formaldehyde, Poly Vinyl AlcoholAbstract
Self-healing coating is a method that can be used to minimize the impact of cracks on metal surfaces. Self-healing coating repairs cracks without human intervention. In microcapsule self-healing coating, there is a core material and a shell. The core material is the healing agent for surface damage, while the shell will break if a crack occurs, removing the core material. In this study, the core material used is walnut oil which belongs to the drying oil group while the shell material used was urea-formaldehyde. Poly Vinyl Alcohol (PVA) took a role as a surfactant in the microcapsule reaction. The PVA concentrations used were 0%, 3%, 4%, and 5%. The results of the microcapsule diameter test showed that 5% PVA produced microcapsules with the smallest diameter of 90.1426 microns. Based on the results of observations through a microscope, it was also seen that without the addition of PVA, the formation of microcapsule granules did not occur where the results were still agglomerated. The results of the thermal stability test using Thermo Gravimetry Analyzer (TGA) showed that the addition of PVA had no significant effect on the decomposition temperature of the microcapsule where this decomposition temperature was still under the requirements for coating applications. The results of the Scanning Electron Microscope (SEM) test also strengthen the results of microscope. Microcapsules of 5% PVA was better and do not clump when compared to 4% PVA microcapsules.Downloads
References
Mishra Munmaya, Application of Encapsulation and Controlled Release. Boca Raton : CRC Press, 2020.
Mobaraki , Ghaffari, & Mozafari, “Self-healing polymers for composite structural applications”. Self-Healing Composite Materials: From Design to Applications, 33–51. 2019.
Kurt Çömlekçi dan Ulutan. “Encapsulation of linseed oil and linseed oil based alkyd resin by urea formaldehyde shell for self-healing systems”. Progress in Organic Coatings, 121(April), 190–200. 2018
Huang dan Yang. “Salt spray and EIS studies on HDI microcapsule-based self-healing anticorrosive coatings”. Progress in Organic Coatings. 77(1), 168–175. 2014
Safaei, Khorasani, Rahnama, Neisiany, dan Koochaki. “Single microcapsules containing epoxy healing agent used for development in the fabrication of cost efficient self-healing epoxy coating”. Progress in Organic Coatings, 114, 40–46. 2018
Khorasani, Ataei, dan Neisiany. “Microencapsulation of a coconut oil-based alkyd resin into poly(melamine–urea–formaldehyde) as shell for self-healing purposes”. Progress in Organic Coatings, 111, 99–106. 2017
Huang, Zhang, dan Yang, “Synthesis of organic silane microcapsules for self-healing corrosion resistant polymer coatings”. Corrosion Science, 65, 561–566. 2012.
SJ Garcia Espallargas, HR Fischer, PA White, J Mardel, Y Gonzalez Garcia, JMC Mol, A.E. Hughes. “Self-healing anticorrosive organic coating based on an encapsulated water reactive silyl ester: Synthesis and proof of concept”. Progress in Organic Coatings. Volume 70. 2011.
Suryanarayana, Rao, dan Kumar. “Preparation and characterization of microcapsules containing linseed oil and its use in self-healing coatings.” Progress in Organic Coatings, 63(1), 72–78. 2008.
M. Samadzadeh, S. Hatami Boura, M. Peikari, A. Ashrafi, M. Kasiriha. “Tung oil: An autonomous repairing agent for self-healing epoxy coatings”. Progress in Organic Coatings. 70.4. 383-387. 2011.
Barbara H. Stuart, Analytical Techniques in Materials Conservation. In Analytical Techniques in Materials Conservation. Sydney : John Wiley and Sons. 2007.
Kemal, Budianto, dan Soegiyono. “Preparation and characterization of microspheres based on blend of poly(lactic acid) and poly(ε-caprolactone) with poly(vinyl alcohol) as emulsifier”. Arabian Journal of Chemistry. 5(1), 103–108. 2012.
Nesterova, Dam-johansen, Thorslund, dan Kiil, “Progress in Organic Coatings Microcapsule-based self-healing anticorrosive coatings : Capsule size , coating formulation , and exposure testing”. Progress in Organic Coatings, 75(4), 309–318. 2012
Abdipour, Rezaei, dan Abbasi. “Synthesis and characterization of high durable linseed oil-urea formaldehyde micro/nanocapsules and their self-healing behaviour in epoxy coating”. Progress in Organic Coatings, 124, 200–212. 2018.
Wang dan Zhou. “Evaluation and failure analysis of linseed oil encapsulated self-healing anticorrosive coating”. Progress in Organic Coatings, 118, 108–115. 2018.
Shahabudin, Yahya dan Gan. Microcapsules of poly ( urea-formaldehyde ) ( PUF ) containing alkyd from palm oil. 5th International Conference on Functional Materials & Devices (ICFMD 2015). Johor Bahru, Malaysia. 4-6 Agustus 2015, 88–95.
Orfanidis, Papavassiliou, dan Paipetis. “Microcapsule-based self-healing materials: Healing efficiency and toughness reduction vs. capsule size”. Composites Part B. 2019.
Downloads
Published
Issue
Section
License
The rights of publication and use of intellectual works in this journal are the full property of the publisher, while the moral rights belong to the author.
The formal legal aspects of access and utilization of each Journal of Technology articles are subjected to the Creative Commons Attribution-Share Alike (CC BY-SA) license, which means that journal content can be used freely and fairly (fair use) in a similar form even for commercial purposes.
To avoid malpractice and plagiarism in publication of article publishing, the author is asked to fill out and sign a copyright statement on the Declaration of Authenticity of the Manuscript and Copyright Transfer.
