Synthesis, Characterization and Application of Bio-Based Plasticizers in Quality Improvement of Nitrocellulose Surface Coatings

S. Sameera D. Mendis and Nilmini A.H.L.r
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S. Sameera D. Mendis: Paints and General Industries Limited-Manufacturer of AkzoNobel Paints, Sri Lanka.
Nilmini A.H.L.r: Faculty of Technology, University of Sri Jayewardenepura, Pitipana, Homagama, Sri Lanka.

International Journal of Research and Innovation in Applied Science, 2022, vol. 7, issue 10, 08-16

Abstract: Plant oils are one of popular starting raw materials of alkyd resin manufacturing and castor oil is well known plasticizer in coating industry. Coconut oil-based alkyd resins and blend of coconut and castor oil-based alkyd resins were synthesized as Bio-based plasticizers to evaluate their properties as plasticizers for nitrocellulose (nc) paint. During synthesis of those resins, variation of acid value, viscosity, oil length and generated water amount was evaluated. Series of nitrocellulose surface coatings (ncscs) were prepared using one alkyd resin at a time according to a dilution series and followed the same procedure for other alkyd resins and commercially available plasticizers (caps). All ncscs were tested for specific gravity, apparent viscosity, reduced viscosity, dry film thickness, dry film gloss, impact resistance, mandrel bending, Erichsen cupping, drying time, pencil hardness. According to the results it was proven that alkyd resins incorporated ncscs are better in viscosity, low drying time, film hardness. Ncscs with commercially available plasticizer (cap) is better in flexibility, impact resistance, dry film thickness, gloss

Date: 2022
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