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Renewable resource based novel antimicrobial polyesteramide-urethenehybrid coatings

Siyanbola, T. O. and Rao, B. V. S. K. and Narayan, R. and Olaofe, O. and Akintayo, E. T. and Raju, KVSN (2012) Renewable resource based novel antimicrobial polyesteramide-urethenehybrid coatings. In: CONFERENCE ON ENGINEERING COATINGS: PROCESSES, CONTROLS & APPLICATIONS, 9-1 1 February, 2012, Victor Menezes Convention Centre, IIT Bombay Gateway India Section.

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Abstract

The use of renewable resources for the development of coating materials is a viable means to reduce environmental impact and support sustainability efforts. This paper describes a novel antimicrobial polyesteramide-urethane-silica- Zinc Oxide (ZnO) hybrid coatings based on milk bush seed oil as renewable resource. Initially ZnO nanoparticles were modified with aminopropyltrimethoxysilane to get silica grafted ZnO composite particles. The milk bush oil based polyesteramide were reacted with excess H12MDI to get NCO terminated polyesteramide-urethanes and the excess NCO was reacted with silica grafted ZnO composite particles to get the reactive hybrid prepolymers. These prepolymers were casted on tin foil and cured under atmospheric moisture to get eco-friendly moisture curing polyesteramide-urethane-silica- Zinc Oxide (ZnO) hybrid coatings films. The coatings films were evaluated for its antimicrobial and thermo mechanical properties while coated steel specimen were used for corrosion studies. The techniques such as FTIR, TGA, DSC, DMTA, SEM and XRD have been used in this study. The hybrid coating films has shown very good antibacterial and antifungal propertie$, higher thermal stability and better thermo mechanical properties. The improvement in the properties was dependent" on the concentration of ZnO composite particles in the coating films. The antibacterial experiments show that the ZnO doped films exhibit excellent antibacterial activity, especially for E.coli. The salt spray test on coated specimen show good corrosion resistance properties for hybrid coatings

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 18 Jan 2017 15:24
Last Modified: 18 Jan 2017 15:24
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/7574

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