Development of Functional Polyurethane–ZnO Hybrid Nanocomposite Coatings from Thevetia peruviana Seed Oil. (7th January 2015)

• Record Type: Journal Article
• Authors: Siyanbola, T. O.; Sasidhar, K.; Rao, B. V. S. K.; Narayan, Ramanuj; Olaofe, O.; Akintayo, E. T.; Raju, K. V. S. N.
• Is Part Of: Journal of the American Oil Chemists' Society. Volume 92:Number 2(2015)
• Page Start: 267
• Page End: 275
• Publication Date: 2015-01-07
• Subjects: Thevetia peruviana seed oil -- Nanocomposite -- Polyurethane coatings -- Thermal analysis; Oils and fats -- Periodicals; Soap -- Periodicals; Fats -- Periodicals; Food-Processing Industry -- Periodicals; Acides gras -- Périodiques; Aliments -- Industrie et commerce -- Périodiques; Huiles et graisses -- Périodiques; Savon -- Périodiques; Oliën; Chemie; Oils and fats; Soap; Periodicals; 547.77
• DOI: 10.1007/s11746-014-2587-y
• Languages: English
• ISSNs: 0003-021X

Abstract

Abstract: 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 1 H‐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 (H12 MDI) 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, 1 H‐NMR, 13 C‐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.