Advertisement

Iranian Polymer Journal

, Volume 23, Issue 9, pp 699–706 | Cite as

Corrosion behavior of aluminum/silica/polystyrene nanostructured hybrid flakes

  • Naghmeh Amirshaqaqi
  • Mehdi Salami-KalajahiEmail author
  • Mohammad Mahdavian
Original Paper

Abstract

The corrosion protection of aluminum flake pigments has been extended by means of an encapsulating inorganic/organic silica/polystyrene hybrid nanolayer. A silica nanolayer encapsulated the surface of aluminum flakes (Al) by hydrolysis and polycondensation of tetraethylorthosilicate via sol–gel process to yield Al/Si flakes. Then, 3-methacryloxypropyltrimethoxysilane (MPS) was used as surface modifier which has polymerizable groups to participate in polymerization reaction (Al/Si/MPS). A polystyrene (PS) coating layer was applied on Al/Si/MPS flakes by free radical polymerization of styrene initiating with Azobisisobutyronitrile at 60 °C and subsequent washing of free chains with solvent yielded Al/Si/PS flakes. Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy and scanning electron microscopy showed that silica and PS nanolayers were formed on the aluminum flakes. The attached PS chains on the surface were detached by hydrofluoric acid aqueous solution and analyzed by gel permeation chromatography (GPC). Also, a transmission electron microscopy image showed clearly that the encapsulating layers are in the scale of nano. Good results were obtained in terms of corrosion protection in acidic and alkaline solutions, indicating that the silica/polymer hybrid nanolayer coating acts as an efficient protective film. After encapsulating the flakes, the evolved hydrogen volume was dropped and hybrid nanolayer resulted in no evolved hydrogen volume.

Keywords

Aluminum flakes Corrosion protection Polystyrene Silica In situ polymerization Encapsulation 

Notes

Acknowledgments

We are grateful for the financial support of the Iran National Science Foundation (INSF) (grant no. 91002479).

References

  1. 1.
    Pi PH, Chen J, Chen K, Cai ZQ, Zheng DF, Wen XF, Cheng J, Yang ZR (2012) Effects of acid treatment on adhesive performance of encapsulated aluminium pigments on plastic sheets. Can J Chem Eng 90:1224–1230CrossRefGoogle Scholar
  2. 2.
    Müller B, Franze K, Mebarek D (1995) Corrosion inhibition of aluminum pigments in aqueous alkaline media at different pH values. Corrosion 51:625–630CrossRefGoogle Scholar
  3. 3.
    Jadhav N, Vetter CA, Gelling VJ (2013) The effect of polymer morphology on the performance of a corrosion inhibiting polypyrrole/aluminum flake composite pigment. Electrochim Acta 102:28–43CrossRefGoogle Scholar
  4. 4.
    Liu H, Ye H, Zhang Y, Tang X (2008) Preparation and characterization of poly(trimethylolpropane triacrylate)/flaky aluminum composite particle by in situ polymerization. Dyes Pigment 79:236–241CrossRefGoogle Scholar
  5. 5.
    Razavi-Tousi SS, Szpunar JA (2014) Mechanism of corrosion of activated aluminum particles by hot water. Electrochim Acta 127:95–105CrossRefGoogle Scholar
  6. 6.
    Karlsson PM, Esbjörnsson NB, Holmberg K (2009) Admicellar polymerization of methyl methacrylate on aluminum pigments. J Colloid Interf Sci 337:364–368CrossRefGoogle Scholar
  7. 7.
    Sabagh S, Bahramian AR, Kokabi M (2012) SiAlON nanoparticles effect on the corrosion and chemical resistance of epoxy coating. Iran Polym J 21:837–844CrossRefGoogle Scholar
  8. 8.
    Ershad-Langroudi A, Rahimi A (2014) Effect of ceria and zirconia nanoparticles on corrosion protection and viscoelastic behavior of hybrid coatings. Iran Polym J 23:267–276CrossRefGoogle Scholar
  9. 9.
    Sabagh S, Bahramian AR, Kokabi M (2012) SiAlON nanoparticles effect on the behaviour of epoxy coating. Iran Polym J 21:229–237CrossRefGoogle Scholar
  10. 10.
    Karlsson P, Palmqvist AEC, Holmberg K (2006) Surface modification for aluminium pigment inhibition. Adv Colloid Interf Sci 128–130:121–134CrossRefGoogle Scholar
  11. 11.
    Supplit R, Schubert U (2007) Corrosion protection of aluminum pigments by sol-gel coatings. Corros Sci 49:3325–3332CrossRefGoogle Scholar
  12. 12.
    Popoola PAI, Omotayo S, Loto CA, Popoola OM (2013) Inhibitive action of ferrous gluconate on aluminum alloy in saline environment. Adv Mater Sci Eng 2013:639071Google Scholar
  13. 13.
    Yan M, Vetter CA, Gelling VJ (2010) Electrochemical investigations of polypyrrole aluminum flake coupling. Electrochim Acta 55:5576–5583CrossRefGoogle Scholar
  14. 14.
    Guo L, Song W, Hu M, Xie C, Chen X (2008) Preparation and reactivity of aluminum nanopowders coated by hydroxyl-terminated polybutadiene (HTPB). Appl Surf Sci 254:2413–2417CrossRefGoogle Scholar
  15. 15.
    Liang B, Wang GD, Zhang BY, Zhang XM (2014) Optimization of sol-gel coating on the surface of aluminum alloy powder for corrosion protection in the condition of ultrasonic radiation. Mater Corros. doi: 10.1002/maco.201307270 Google Scholar
  16. 16.
    Zhang Y, Ye H, Liu H, Han K (2011) Preparation and characterisation of aluminium pigments coated with silica for corrosion protection. Corros Sci 53:1694–1699CrossRefGoogle Scholar
  17. 17.
    Li L, Pi P, Wen X, Cheng J, Yang Z (2008) Optimization of sol-gel coatings on the surface of aluminum pigments for corrosion protection. Corros Sci 50:795–803CrossRefGoogle Scholar
  18. 18.
    Liu H, Ye H, Zhang Y (2008) Preparation and characterization of PMMA/flaky aluminum composite particle in the presence of MPS. Colloid Surf A Physicochem Eng Asp 315:1–6CrossRefGoogle Scholar
  19. 19.
    Yan M, Vetter CA, Gelling VJ (2013) Corrosion inhibition performance of polypyrrole Al flake composite coatings for Al alloys. Corros Sci 70:37–45CrossRefGoogle Scholar
  20. 20.
    Joubert M, Save M, Mornet S, Lavaud F, Pellerin V, Morvan F, Tranchant J-F, Duguet E, Billon L (2014) Surface patterning of micron-sized aluminum flakes by seeded dispersion polymerization: towards waterborne colored pigments by gold nanoparticles adsorption. Polymer 55:762–771CrossRefGoogle Scholar
  21. 21.
    Liu H, Ye H, Zhang Y (2007) Preparation of PMMA grafted aluminum powder by surface-initiated in situ polymerization. Appl Surf Sci 253:7219–7224CrossRefGoogle Scholar
  22. 22.
    Liu H, Ye H, Tang X (2007) Aluminum pigment encapsulated by in situ copolymerization of styrene and maleic acid. Appl Surf Sci 254:616–620CrossRefGoogle Scholar
  23. 23.
    Li LJ, Pi PH, Wen XF (2008) Aluminum pigments encapsulated by inorganic-organic hybrid coatings and their stability in alkaline aqueous media. J Coat Technol Res 5:77–83CrossRefGoogle Scholar
  24. 24.
    Sarsabili M, Parvini M, Salami-Kalajahi M, Asfadeh A (2013) Effect of MCM-41 nanoparticles on the kinetics of free radical and RAFT polymerization of styrene. Iran Polym J 22:155–163CrossRefGoogle Scholar
  25. 25.
    Liu H, Ye H (2008) Synthesis and property of poly(trimethylolpropane triacrylate)/Al nanocomposite particle by in situ solution polymerization. Appl Surf Sci 254:4432–4438CrossRefGoogle Scholar
  26. 26.
    Umoren SA, Obot IB, Ebenso EE, Okafor PC, Ogbobe O, Oguzie EE (2006) Gum arabic as a potential corrosion inhibitor for aluminium in alkaline medium and its adsorption characteristics. Anti-Corros Methods Mater 53:277–282CrossRefGoogle Scholar
  27. 27.
    Diaconu G, Micusık M, Bonnefond A, Paulis M, Leiza JR (2009) Macroinitiator and macromonomer modified montmorillonite for the synthesis of acrylic/MMT nanocomposite latexes. Macromolecules 42:3316–3325CrossRefGoogle Scholar
  28. 28.
    Supplit R, Schubert US (2007) Corrosion protection of aluminum pigments by sol-gel coatings. Corros Sci 49:3325–3332CrossRefGoogle Scholar
  29. 29.
    Carre A (2007) Polar interactions at liquid/polymer interfaces. Adhes Sci Technol 21:961–981CrossRefGoogle Scholar
  30. 30.
    Żenkiewicz M (2007) Methods for the calculation of surface free energy of solids. J Achieve Mater Manuf Eng 24:137–145Google Scholar
  31. 31.
    Subedi DP (2011) Contact angle measurement for the surface characterization of solids. Himalayan Phys 2:1–4Google Scholar

Copyright information

© Iran Polymer and Petrochemical Institute 2014

Authors and Affiliations

  • Naghmeh Amirshaqaqi
    • 1
    • 2
  • Mehdi Salami-Kalajahi
    • 1
    • 2
    Email author
  • Mohammad Mahdavian
    • 3
  1. 1.Department of Polymer EngineeringSahand University of TechnologyTabrizIran
  2. 2.Institute of Polymeric MaterialsSahand University of TechnologyTabrizIran
  3. 3.Surface Coating and Corrosion DepartmentInstitute for Color Science and TechnologyTehranIran

Personalised recommendations