The Migration Study of Plasticizer in PVC Food Packaging Film under Microwave Condition

Abstract

In order to study the migration law of plasticizer in polyvinyl chloride (PVC) food packaging film under microwave condition, we need to measure the kinds and content of plasticizer in food packaging film itself and then to measure the content of plasticizer in food simulant after migration experiment. Firstly, a kind of commercial PVC food packaging film was selected to conduct migration experiment, and the plasticizer in the packaging film itself and in food simulant after migration experiment were extracted by the combination of cyclotron oscillation and ultrasonic, and then the plasticizer was measured by using the method of gas chromatography-mass spectrometry(GC-MS). And compared with the total ion scanning chromatogram of 16 kinds of plasticizers in SIM mode, it was found that PVC food packaging film mainly contained excessive plasticizer—dibutyl phthalate (DBP). The results showed that with the increase of microwave heating time and heating power, DBP in PVC food packaging film to food simulant (olive oil) increased gradually. By comparing the migration of DBP in different types of food simulants, it was found that the fats and oils food simulants were more favorable for migration of plasticizer in packaging film to food.