Antioxidant BHT modelling migration from food packaging of high density polyethylene plastics into the food simulant

Made of High Density Polyethylene (HDPE) films containing antioxidant 2, 6-di-tert-butyl-p-cresol (BHT), film samples were manufactured by plastic extrusion equipment, 95% ethanol aqueous solution simulatingliquid was used for stimulant, using High Performance Liquid Chromatography (HPLC) for the long-term migration test of 4 kinds of HDPE films containing different concentrations of antioxidant BHT. The migration data were processed by using Weibull model and then the migration model was specific under experimental conditions. Migration model was setup using the migrating data by Weibull model to fitting real experimental data. Using empirical formula reported FDA model formula and the diffusion coefficient constant D, calculated by the FDA model. Two kinds of model numerical after compared according to FDA model transfer numerical literature that is far lower than the actual test migration value. According to the actual test migration value, Weibull model numerical and experimental tests that the migration software fitting values are consistent.