To improve heat stability and mechanical properties high
energy electron irradiation can be applied to introduce crosslinking
between PLA molecules. In general, the crosslinking and
degradation processes are simultaneously occurring in amorphous
regions of polymers as an effect of electron irradiation. To favour
crosslinking over degradation processes, some crosslinking agents
are added into polymers. The determination and comparison of the
influence of 3 wt.% of trimethylopropane trimethacylate (TMPTA)
and 3 wt.% of trially isocyanurate (TAIC) crosslinking agents on
the thermomechanical properties of electron beam irradiated PLA
was reported previously