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Development of Poly (Ester Amide-Urethanes) from De-saturated Thevetia peruviana Seed Oil-FAMEs

Siyanbola, T. O. and Kantheti, S. and Narayan, R. and Anjaneyulu, B. and Rao, B. V. S. K. and Olaofe, O. and Akintayo, E. T. and Raju, KVSN (2015) Development of Poly (Ester Amide-Urethanes) from De-saturated Thevetia peruviana Seed Oil-FAMEs. International Research Journal of Pure & Applied Chemistry, 8 (2). pp. 58-72. ISSN 2231-3443

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This study present the synthesis of eco-friendly poly(ester amide-urethane) coating from Thevetia peruviana seed oil (TPSO). FT-IR, 1H NMR and 13C NMR spectral analyses were used in confirming the structure of compounds. Physico-chemical properties of desaturated N,N'-bis (2- hydroxyethyl) Thevetia peruviana seed oil fatty amide (DHETA), poly(ester amide) (PESA) and poly(ester amide urethanes) (PESAU), as well as chemical resistance, antibacterial studies and thermal analysis of PESAU were also examined. Aims: To evaluate the thermal stability and antibacterial activities of PESAU. Study Design: Extraction of seed oil from the air-dried seedlings of Thevetia peruviana seeds and preparation of polyol through urea fractionation. Followed by urethane synthesis using 4,4'- diisocyanatodicyclohexylmethane (H12MDI). Result: The 46.4 g ICI/100g Iodine value (I.V.) of the amide (DHETA) base polyol was reduced to 10.5 g ICI/100 g value for the urethane (PESAU). The zero percent value for PESAU hydroxyl value (H.V.) is an indication of complete reaction of the hydroxyl functional groups on PESA with H12MDI. Spectroscopic examinations carried out confirm the formation of synthesized compounds. Conclusion: The synthesized urethane (PESAU) shows excellent inhibitive activities against tested organisms.

Item Type: Article
Uncontrolled Keywords: Thevetia peruviana; poly(esteramide); antibacterial; thermal analysis; urea fractionation
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 08 Oct 2015 13:16
Last Modified: 16 Jan 2017 12:33

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