Differential scanning calorimetry (DSC) was performed
on a differential scanning calorimeter (Polymer Laboratories,
Epson, UK) under nitrogen screening. Thermal
behaviour of PLA and PLA/clay nanocomposites was
examined in a temperature range of 25–220 C with a
heating rate of 10 C min-1 according to PNEN
ISO 11357:2002. The degree of crystallinity (Xm) was
evaluated by applying the following Eq. (1), also used by
other authors