Abstract
The effect of the addition of an extract rich in phenols, from rice husks, on the microstructural and optical properties of biodegradable films based on thermoplastic starch and poly (e-caprolactone) has been studied. For the rice husk extract, the amount of soluble solid, the content of phenolic compounds and the antioxidant activity were determined. In the case of films, their morphology was studied by Scanning Electron Microscopy and their internal transmittance, colour and brightness were determined. The results show statistically significant differences (p <0.05) for the transmittance, colour and brightness of the material. Regarding its morphology, the addition of phenols generated less rough, and more homogeneous and compact films. Based on the results of the work, it is concluded that the addition of extract significantly affects the structure of the material by modifying its optical properties.
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