Journal of the American Oil Chemists' Society

, Volume 92, Issue 2, pp 267–275 | Cite as

Development of Functional Polyurethane–ZnO Hybrid Nanocomposite Coatings from Thevetia peruviana Seed Oil

  • T. O. Siyanbola
  • K. Sasidhar
  • B. V. S. K. Rao
  • Ramanuj Narayan
  • O. Olaofe
  • E. T. Akintayo
  • K. V. S. N. RajuEmail author
Original Paper


The present article reports eco-friendly multi-functional polyurethane–ZnO hybrid nanocomposite coatings obtained from Thevetia peruviana seed oil (TPSO). Initially, the polyols were prepared by treating TPSO with glycerol and the formation was supported by Fourier transform infrared (FT-IR) and 1H-NMR studies. In the next stage, siloxane functionalized ZnO nanoparticles were added to the polyol mixture in different weight percentages (0, 1 and 2 %) and then treated with excess 4,4′-diisocyanatodicyclohexylmethane (H12MDI) in order to synthesize isocyanate terminated polyurethane nanocomposites. The polyurethane hybrids were then casted as thin films and cured under atmospheric moisture. After complete curing they were characterized by using FT-IR, 1H-NMR, 13C-NMR, X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, and dynamic mechanical thermal analysis techniques. The hybrid nanocomposites showed superior thermo-mechanical and anti-corrosive properties compared to pristine polyurethane. Also, due to the presence of nano ZnO in the polyurethane matrix, the composite coatings are showing excellent resistance towards various bacterial and fungal stains.


Thevetia peruviana seed oil Nanocomposite Polyurethane coatings Thermal analysis 



The author, Dr. Tolutope O. Siyanbola is grateful to TWAS and CSIR (India) for the TWAS-CSIR 2010 Postgraduate Fellowship Award. The Indian Institute of Chemical Technology and CSIR Intel-Coat Project (CSC-0114) are appreciated for providing the enabling environment needed for my bench work. Covenant University Ota, Nigeria is well appreciated for creating the platform leading to the award of my Ph.D. Dr. Tolutope O. Siyanbola is also thankful to Prof. K.O. Okonjo, Dr. Oladele O. James, Adeogo Adedayo, Oluwatoni Siyanbola, Toluwase Siyanbola and Mrs Tunmike S. Siyanbola for their support.


  1. 1.
    Lu Y, Larock RC (2009) Novel polymeric materials from vegetable oils and vinyl monomers: preparation, properties, and applications. ChemSusChem 2:136–147CrossRefGoogle Scholar
  2. 2.
    Siyanbola TO, Ajanaku KO, James OO, Olugbuyiro JAO, Adekoya JA (2011) Physico-chemical characteristics of industrial effluents in Lagos state, Nigeria. Glob J Pure Appl Sci Tech 1:49–54Google Scholar
  3. 3.
    Meier MAR, Metzgerb JO, Schubert US (2007) Plant oil renewable resources as green alternatives in polymer science. Chem Soc Rev 36:1788–1802CrossRefGoogle Scholar
  4. 4.
    Sharmin E, Ashraf SM, Ahmad S (2007) Epoxidation, hydroxylation, acrylation and urethanation of Linum usitatissimum seed oil and its derivatives. Eur J Lipid Sci Technol 109:134–146CrossRefGoogle Scholar
  5. 5.
    Siyanbola TO, Sasidhar K, Anjaneyulu B, Kumar KP, Rao BVSK, Narayan R, Olaofe O, Akintayo ET, Raju KVSN (2013) Anti-microbial and anti-corrosive poly(ester amide urethane) siloxane modified ZnO hybrid coatings from Thevetia peruviana seed oil. J Mater Sci 48:8215–8227CrossRefGoogle Scholar
  6. 6.
    Cocks LV (1966) Rede VC laboratory handbook for oil and fat analyst. American Press, London and New YorkGoogle Scholar
  7. 7.
    Jena Kishore K, Raju KVSN (2007) Synthesis and characterization of hyperbranched polyurethane–urea/silica based hybrid coatings. Ind Eng Chem Res 46:6408–6416CrossRefGoogle Scholar
  8. 8.
    Chattopadhyay DK, Raju KVSN (2007) Structural engineering of polyurethane coatings for high performance applications. Prog Polym Sci 32:352–418CrossRefGoogle Scholar
  9. 9.
    Jena KK, Narayan R, Raju KVSN (2012) Investigation of the effect of ZnO nanoparticles on the thermomechanical and microbial properties of hyperbranched polyurethane-urea hybrid composites. Polym Int 61:1309–1317CrossRefGoogle Scholar
  10. 10.
    Jayakumar R, Nanjundan S, Rajkumar M, Nagendran R (2001) Studies on metal-containing polyurethanes based on divalent metal salts of mono(hydroxyethoxyethyl)phthalate. J Macromol Sci Pure Appl Chem A 38:869–888CrossRefGoogle Scholar
  11. 11.
    Zafar F, Ashraf SM, Ahmad S (2007) Studies on zinc-containing linseed oil based polyesteramide. React Funct Polym 67:928–935CrossRefGoogle Scholar
  12. 12.
    Linday ME (1962) Practical introduction to microbiology. E and F.N. Spon, London, p 177Google Scholar
  13. 13.
    Zafar F, Ashraf SM, Ahmad S (2004) Air drying polyesteramide from a sustainable resource. Prog Org Coat 51:250–256CrossRefGoogle Scholar
  14. 14.
    Grasset F, Saito N, Li D, Park D, Sakaguchi I, Ohashi N, Duguet E (2003) Surface modification of zinc oxide nanoparticles by aminopropyltriethoxysilane. J Alloys Comp 360:298–311CrossRefGoogle Scholar
  15. 15.
    Mishra AK, Mishra RS, Narayan R, Raju KVSN (2010) Effect of nano ZnO on the phase mixing of polyurethane hybrid dispersions. Prog Org Coat 67:405–413CrossRefGoogle Scholar
  16. 16.
    Chao W, Lian-Long L, Ai-Ting Z, Peng X, Jian-Jun L, Xiao-Ting Z (2012) Antibacterial effects of zinc oxide nanoparticles on Escherichia coli K88. Afri J Biotech 11:10248–10254Google Scholar

Copyright information

© AOCS 2015

Authors and Affiliations

  • T. O. Siyanbola
    • 1
  • K. Sasidhar
    • 2
  • B. V. S. K. Rao
    • 3
  • Ramanuj Narayan
    • 2
  • O. Olaofe
    • 4
  • E. T. Akintayo
    • 4
  • K. V. S. N. Raju
    • 2
    Email author
  1. 1.Chemistry Department, College of Science and TechnologyCovenant UniversityOtaNigeria
  2. 2.Division of Polymers and Functional MaterialsIndian Institute of Chemical TechnologyHyderabadIndia
  3. 3.Centre for Lipid ResearchIndian Institute of Chemical TechnologyHyderabadIndia
  4. 4.Chemistry DepartmentEkiti State UniversityAdo-EkitiNigeria

Personalised recommendations