Extraction of Antioxidants from High Density Polyethylene (HDPE) by Pressurized Liquid Extraction (PLE)

摘要

Plastics and other polymers are used in a wide spectrum of appli- cations from industrial usage to packaging, including the packaging of food and pharmaceutical products. To enhance functionality, chemical additives are often added to polymers. These additives enable polymers to be more durable, pliable and make them less subject to degradation. To ensure that the specified amounts of an additive or combination of additives are incorporated into a polymer. After the extrusion process, a rapid and accurate analytical method is required to measure additives and other process by products. This application note demonstrates the use of pressurized liquid extraction using the FMS PLE system to extract polymer additives for quatitative analysis by HPLC. Four specific additives of known concentrations were extracted from high density polyethylene (HDPE) and the recoveries measured.