Effect of high energy β-radiation and addition of triallyl isocyanurate on the selected properties of polylactide

Comparison of some changes occurring in polylactide (PLA) due to high energy beta-radiation and addition of triallyl isocyanurate (TAIC) was the main objective of the present study. It was found that irradiation of PLA by high energy beta-radiation causes essential changes in its properties, that undergoes mainly degradation, to form a porous structure. The PLA degradation can be diminished by introduction into the polymer matrix of a low-molecular mass multifunctional compound like TAIC. Upon the electron radiation, effective crosslinking of PLA by TAIC occurs. Application of TAIC favorably influences hindering of the PLA degradation or, when the doses are very large, diminishes worsening of the PLA functional qualities. It was also found that the optimum crosslinking of PLA is obtained when the electron radiation doses of the range of 40-200 kGy are applied and the amount of TAIC equal 3-5 wt% is used. (C) 2016 Elsevier B.V. All rights reserved.