Polymers derived from renewable resources are now considered as promising alternatives
to traditional petro-polymers as they mitigate current environmental concerns (raw
renewable materials/biodegradability). D-limonene can be found in a variety of citrus,
indeed is the main component of citrus oils and one of most important contributors to
citrus flavor. The incorporation of limonene in PLA matrix was evaluated and quantified by
Pyrolysis Gas Chromatography Mass Spectrometry (Py-GC/MS). Transparent films were
obtained after the addition of the natural compound. Mechanical properties were evaluated
by tensile tests. The effect of limonene on mechanical properties of PLA films was
characterized by an increase in the elongation at break and a decrease in the elastic
modulus. The fracture surface structure of films was evaluated by scanning electron microscopy
(SEM), and homogeneous surfaces were observed in all cases. Barrier properties
were reduced due to the increase of the chain mobility produced by the D-limonene