Abstract
The purpose of this study was to evaluate the effect of modified coconut oil (MCO) on elasticity change of films prepared from shellac. The MCO was added into shellac solution and then cast to thin film. The film containing MCO from 0-30% w/w was then comparatively evaluated. The result indicated that MCO had an direct effect on mechanical properties of films. The percentage elongation was increased while the tensile strength was decreased, as increasing percentage of MCO, suggesting the reduced brittleness of film. The FTIR peak assigned to O-H and C-O stretching was also shift after incorporation of MCO. Therefore, the plasticization of shellac film might due to the interaction between hydroxyl group of glycerides in MCO and shellac molecules.
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