Swelling as a promoter of migration of plastic additives in the interaction of fatty food simulants with polylactic acid- and polypropylene-based plastics

The migration of various plastic additives (antioxidants: BHT, Ionox 220, Irgafos 168; UV absorber: Uvinul 3039; plasticizers: TBAC and TOTM) from polypropylene polylactic acid was investigated in a series experiments conducted over period 13 days. As fatty food simulants, both ethanol 95 v/v% isooctane were used. Non-Fickian behaviour observed on multiple occasions. kinetic curves concentrations swelling evaluated using variography, to determine objectively the starting points long-lasting plateaus as well short halts increase. A strong correlation between observed: showed that always followed swelling. Also, more intensive results increased additivies. Consequently, testing can be improved by considering plastic.