Pongamia glabra seed oil based poly(urethane–fatty amide)

Abstract

Poly(urethane-fatty amide) (PUPGFA) was developed to use nonedible and nondrying Pongamia glabra seed oil. The resin was synthesized by the reaction of N,N-bis(2-hydroxyethyl) P. glabra fatty amide (HEPGFA) and tolylene-2,4-diisocyanate through a one-shot technique with a minimal amount (8-10%) of organic solvent. The structural elucidation of the resin was carried out by Fourier transform infrared (FTIR), 1 H-NMR, and 13 C-NMR spectroscopic techniques, whereas the curing mechanism was confirmed by FTIR spectroscopy and differential scanning calorimetry. The solubility of the resin was studied in different polar and nonpolar solvents. Thermal analysis was carried out by thermogravimetric analysis and differential thermal analysis techniques. Antibacterial studies of HEPGFA and PUPGFA were performed in the presence of Gram-negative Salmonella and Gram-positive Staphylococcus aureus bacteria by an agar diffusion method. Physicochemical, physicomechanical, and corrosion-resistance tests were performed by standard laboratory methods. PUPGFA had good physicomechanical properties, excellent chemical/corrosion resistance, and moderate antibacterial activities.

Seed Oil Based Polyurethanes: An Insight

“…PU from PGO [PFADU] has shown moderate antibacterial behavior against Salmonella sp. with good scratch hardness (1.9kg), impact resistance (150lb/inch), bending ability (1/8inch), and gloss (46 at 45 o ) [33]. LFADU coatings have shown superior coating properties than PFADU owing to the fatty acid composition of parent oils (PGO, a non-drying oil has higher content of oleic acid while LO, a drying oil, is rich in linolenic acid).…”

Thermal and Kinetic Behaviour ofPongamia GlabraOil Fatty Amide

“…Pongamia glabra seed oil one of the drying oil as well as non-edible oil was used for the preparation of monomers such as epoxy and fatty amide diols. Fatty amide diol is basic material for the preparation of polyesteramide, polyetheramide and urethane [12,13,15]. Fatty acid methyl ester of seed oils have been also used for biodiesel [16].…”

“…FTIR for -CH = CH -of chain 13. C NMR spectra of HEPA (Figure 3) reveals peaks of CH 3 , and -CH 2 -, of chain, at δ = 14.189 and 22.745 ppm, respectively.…”

“…13 C NMR spectrum of HEPA.Thermal and kinetic behaviour of Pongamia glabra oil fatty amide www.prkm.co.uk…”

Microwave-assisted preparation of urethane-modified polyetheramide coatings from Jatropha seed oil

“…14 Different types of isocyanates, such as hexa methylene diisocyanate (HMDI), isophorone diisocyanate (IPDI) and toluylene-2,4-diisocyanate are used for the curing of coating materials, viz polyesteramide and PEtA, at a reaction temperature of around 120 o C . 15 –18 In the present work we used toluylene-2,6-diisocyanate (TDI) for the formation of polyurethane (urethane-modified polyetheramide: UPEtA) by chemical reaction with JO PEtA at 50 o C in a microwave oven (MW). MW heating shows better performance than conventional heating due to non-contact, highly specific, homogeneous heating, cleaner products and high yield, in reduced time periods.…”