Approaches for Extracting and Determining Additives, Contaminants, and Low-Molecular-Weight By-Products in Synthetic Polymers

摘要

High-purity polymers are typically required for special applications such as implants or prosthetics, pharmaceuticals, electronic devices, and polymer reference standards. Most polymers of commercial interest, however, contain low-molecular-weight additives that are intentionally added to extend the material's serviceable lifetime or alter its properties and performance. There are also nonpolymeric compounds, oligomers, and lowmolecular weight components found in the polymer that originate from the polymerization process itself. Lastly, polymeric material can become contaminated during production, handling, storage, or transportation.