In order to understand the effect of CNC surface chemistry on
PLA nanocomposite thermal properties, DSC analysis was performed
on the injection molded bars that were annealed at 130 C
for 1 h. The results of this study for which data are compiled in the
supporting information section (Table SI-3) show that all samples,
regardless of the CNC surface chemistry or CNC content, have
similar crystallinity (about 33%e37%).