Isolation and Identification of Potential Migrants in Gamma-Irradiated Plastic Laminates by Using GC/MS and GC/IR

Abstract

Potential migrants were isolated by Soxhlet extraction from plastic laminates of PETG/PVDC/PE used to make a single-use injection system. Most of compounds were identified from mass spectra by comparison to reference spectra. However, reference spectra were not available for several major compounds in the Soxhlet extract from irradiated test laminates. Those unknown compounds were identified by using both GC/IR and GC/MS. The change in polymer structure due to irradiation was also monitored by using Fourier transform infrared spectroscopy.