Chemical composition of the oxo-biodegradable plastic before and after 120 days of sunlight exposure.

*Percentage of relative concentration of the elements analyzed on the surface of the oxo-biodegradable plastic by scanning electron microscopy coupled with X-ray diffraction (semi-quantitative method). The mean (designated by different letters within the same line) differ by variance analysis (ANOVA) and Tukey's test (pChemical composition of the oxo-biodegradable plastic before and after 120 days of sunlight exposure.