Air drying polyesteramide-urethanes resins were synthesized from de-saturated fatty methyl ester
(FAME) of Thevetia peruviana seed oil commonly known as Yellow oleanda (a tropical ornamental
shrub) having about 68.8% unsaturated and 30.9% saturated fatty acids. Urea fractionation
method was used to optimize the percentage of functional groups (in this case double bonds) by
physio-sorption of the saturated fatty acids. The physico-chemical characterization of the optimized
unsaturated FAME such as hydroxyl value, iodine value, saponification value, refractive index,
inherent viscosity were carried out using standard methods. Through condensation reaction the
N,N- bis(2-hydroxyethyl) Thevetia peruviana (HETA) prepared from the FAME react with
isophthalic acid to form polyesteramide. The latter undergo urethanation with H1
•
2 MDI. The
structural elucidation of the moisture cured polyesteramide-urethane urethane coating was based
on FTIR, 1H-NMR and 13C-NMR spectroscopic methods. The coatings films were evaluated for its
antibacterial activity and thermal stability properties on TGA and DSC. SEM of the coating films
was also examine
