Synthesizing of smart micro/ nanocapsules containing corrosion inhibitors: A study of the parameters affecting on the capsule size

Document Type : Research Article

Authors

1 دانشجو

2 Department of Polymer and Color Engineering, Amir Kabir University of Technology, Tehran, Iran

/amnc.2020.8.31.3

Abstract

In this research, micro- and nanocapsules of melamine-formaldehyde-pentaerythritol tetrakis successfully synthesized. These micro/nanocapsules are pH-sensitive, the capsule wall degrades in the alkaline environment and releases its core content. The purpose of this paper is to investigate the two parameters, the surface tension of the capsule core material and the effect of shear stress on the encapsulation process as parameters affecting the size of the capsules. The size, morphology, and behavior of the capsules were investigated by scanning electron microscopy (SEM). By using Measurement software, the size of the capsules was obtained. Then the distribution and histogram were plotted with using SPSS software. The size of the microcapsules was 5.5 μm and the nanocapsules in three different synthetic conditions were: 225, 312, 250 nm. Thermogravimetric analysis was also used to evaluate and compare the core to shell ratio of the micro- and nanocapsules. The results determined that by changing the size of the capsules, the core to shell ratio, the optimum conditions to achieve smooth morphology and release behavior changed.

Keywords

References

[1] Zheludkevich, M., et al., Active protection coatings with layered double hydroxide nanocontainers of corrosion inhibitor. Corrosion Science, 2010. 52(2): p. 602-611.
[2] Nguyen, T., Mathematical model for the cathodic blistering of organic coatings on steel immersed in electrolytes. J. Protect. Coat. Linings, 1991. 63: p. 43.
[3] Zheludkevich, M., J. Tedim, and M. Ferreira, “Smart” coatings for active corrosion protection based on multi-functional micro and nanocontainers. Electrochimica Acta, 2012. 82: p. 314-323.
[4] Motornov, M., et al., Stimuli-responsive nanoparticles, nanogels and capsules for integrated multifunctional intelligent systems. Progress in polymer science, 2010. 35(1-2): p. 174-211.
[5] Wei, H., et al., Advanced micro/nanocapsules for self-healing smart anticorrosion coatings. Journal of Materials Chemistry A, 2015. 3(2): p. 469-480.
[6] Liu, Y., et al., Effect of ginger extract as green inhibitor on chloride-induced corrosion of carbon steel in simulated concrete pore solutions. Journal of cleaner production, 2019. 214: p. 298-307.
[7] Sanaei, Z., et al., Use of Rosa canina fruit extract as a green corrosion inhibitor for mild steel in 1 M HCl solution: A complementary experimental, molecular dynamics and quantum mechanics investigation. Journal of industrial and engineering chemistry, 2019. 69: p. 18-31.
[8] Onyeachu, I.B., et al., Green corrosion inhibitor for oilfield application I: Electrochemical assessment of 2-(2-pyridyl) benzimidazole for API X60 Steel under sweet environment in NACE brine ID196. Corrosion Science, 2019. 150: p. 183-193.
[9] Shi, X. and N. Dalal, Generation of hydroxyl radical by chromate in biologically relevant systems: role of Cr (V) complexes versus tetraperoxochromate (V). Environmental health perspectives, 1994. 102(suppl 3): p. 231-236.
[10] Sinko, J., Challenges of chromate inhibitor pigments replacement in organic coatings. Progress in organic coatings, 2001. 42(3-4): p. 267-282.
[11] Amstad, E., Capsules: Their Past and Opportunities for Their Future. 2017, ACS Publications.
[12] Wang, J.P., et al., Smart‐Sensing Polymer Coatings with Autonomously Reporting Corrosion Dynamics of Self‐Healing Systems. Advanced Materials Interfaces, 2019. 6(10): p. 1900055.
[13] Matsuda, T., et al., Release behavior of pH sensitive microcapsules containing corrosion inhibitor. Progress in Organic Coatings, 2019. 132: p. 9-14.
[14] Lavelli, V. and P.S. Harsha, Microencapsulation of grape skin phenolics for pH controlled release of antiglycation agents. Food Research International, 2019. 119: p. 822-828.
[15] Yeganeh, M. and T.A. Nguyen, Mini Review ISSN: 2455-183X Methods for Corrosion Protection of Metals at the Nanoscale. 2019.
[16] Ulaeto, S.B., et al., Smart Coatings, in Noble Metal-Metal Oxide Hybrid Nanoparticles. 2019, Elsevier. p. 341-372.
[17] Santos, L.R., C.E. Marino, and I.C. Riegel-Vidotti, Silica/chitosan hybrid particles for smart release of the corrosion inhibitor benzotriazole. European Polymer Journal, 2019. 115: p. 86-98.
[18] Alizadeh, M. and A.A. Sarabi, pH-Responsive MFPTT microcapsules containing dimethyl sulfoxide: Preparation, characterization and tuning the release behavior of microcapsule contents. Progress in Organic Coatings, 2019. 134: p. 78-90.
[19] Lagaly, G., O. Schulz, and R. Zimehl, Dispersionen und Emulsionen: eine Einführung in die Kolloidik feinverteilter Stoffe einschließlich der Tonminerale. 2013: Springer-Verlag.
[20] Ugelstad, J., M. El‐Aasser, and J. Vanderhoff, Emulsion polymerization: Initiation of polymerization in monomer droplets. Journal of Polymer Science: Polymer Letters Edition, 1973. 11(8): p. 503-513.
[21] Landfester, K., et al., Evidence for the preservation of the particle identity in miniemulsion polymerization. Macromolecular rapid communications, 1999. 20(2): p. 81-84.
[22] Landfester, K., Polyreactions in miniemulsions. Macromolecular Rapid Communications, 2001. 22(12): p. 896-936.
[23] Schramm, L. and F. Emulsions, Suspensions: Fundamentals and Applications. Saskatoon: Wiley, 2005.
[24] Berg, J., D. Sundberg, and B. Kronberg, Microencapsulation of emulsified oil droplets by in-situ vinyl polymerization. Journal of microencapsulation, 1989. 6(3): p. 327-337.
[25] Torza, S. and S. Mason, Three-phase interactions in shear and electrical fields. Journal of colloid and interface science, 1970. 33(1): p. 67-83.
[26] Blaiszik, B., N.R. Sottos, and S.R. White, Nanocapsules for self-healing materials. Composites Science and Technology, 2008. 68(3-4): p. 978-986.
[27] Fickert, J., Nanocapsules for self-healing materials. 2013, Johannes Gutenberg-Universität Mainz.
[28] Sun, Z., et al., A general strategy for one-step fabrication of biocompatible microcapsules with controlled active release. Chinese Chemical Letters, 2019.
[29] Paret, N., et al., Developing Multi Stimuli‐Responsive Core/Shell Microcapsules to Control the Release of Volatile Compounds. Macromolecular Materials and Engineering, 2019. 304(3): p. 1800599.
[30] Schlegel, I., et al., Crystallinity tunes permeability of polymer nanocapsules. Macromolecules, 2017. 50(12): p. 4725-4732.
[31] Wang, L., et al., Reactive compatibilization of biodegradable blends of poly (lactic acid) and poly (ε-caprolactone). Polymer Degradation and Stability, 1998. 59(1-3): p. 161-168.

Files

Share

How to cite

Statistics