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Friday, February 21 • 11:30am - 12:00pm
Production, Characterization and Performance Evaluation of Cardanol Acetate in Alkyd Paints - Nnamdi Azikiwe University Awka

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The utilization of cashew nut shell liquid (CNSL) is currently being focusd on by chemical industries, as they are one of the most important renewable platform chemicals due to their universal availability, inherent biodegradability, low cost, and excellently environmental friendly (i.e. low toxicity toward humans). These natural properties are now being taken advantage of in research and development, with vegetable oil derived polymers/composites, used in numerous applications including paints and coatings, varnishes, adhesives, brake lining, and biomedical. The percentage yield of CNSL obtained was found to be 85.85%. Experimental results showed that CNSL contained mainly phenolic compounds such as cardanol, cardol, anacardic acid and 6- methyl cardol. Cardanol was isolated using methanol and ammonia solution as the solvents in a ratio of 16:5. The percentage yield of cardanol obtained was 75.53%. The cardanol obtained and cardanol acetate synthesized was characterized in terms of viscosity, specific gravity, moisture content, pH, iodine value using international standard methods. The functional groups present in the raw CNSL, cardanol and cardanol acetate was determined using FTIR spectroscopy. Results showed that the CNSL contained functional groups of both saturated and unsaturated fatty acids that are essential in oil, OH free bond of alcohols, phenols; O-H stretch of alcohols, phenols, amines, carboxylics and C=C stretch of alkyne, alkenes and the presence of C=O stretch of functional group which was a characteristic of the ester. The cardanol acetate synthesized was used as a reactive diluent at varying concentrations to formulate alkyd paints. The properties of the formulated paint samples evaluated are viscosity, specific gravity, drying times hardness and thickness of dry paint films and paint film gloss. Results showed that the paint viscosity decreased with increases in the percentage cardanol acetate incorporated into the system. The dry paint films were generally hard and the thickness of the dry paint films were in the range of 0.20 – 0.25. The paint dry times increased with increases in the reactive diluent incorporated into the system. The dry paint films were generally glossy. The coating system formulated from the synthesized cardanol acetate was less VOC, non-toxic, good media resistance and environmentally friendly and can be utilized for both architectural and industrial coatings.

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Iheoma Nwuzor

Lecturer, Nnamdi Azikiwe University Awka
BiographyIheoma Chigoziri Nwuzor, is a Ph.D holder of Polymer Science, in the Department of Polymer and Textile Engineering, Federal University of Technology Owerri, Imo State, Nigeria. She also obtained her MSc. Degree in Polymer Science and Engineering in the Department of Polymer... Read More →



Friday February 21, 2020 11:30am - 12:00pm
Rhythms II-III