Topics
oligomer
January 4, 2024
Scientists assessed polyethylene terephthalate (PET) trays with different amounts of recycled content and produced by two different extrusion processes; find cyclic oligomer migration increases with recycled content amount, differs between the two processes; nontargeted screening identifies intentional and non-intentional substances, including marker compounds for recycled PET
Reading time: 3 minutes
September 21, 2023
Perspective article emphasizes that the “invisible” part of polymers, the oligomers, have been overlooked with the focus being on the “visible” part, the microplastics; urgency to increase knowledge on oligomer properties, environmental behavior, and toxicity given their ever-increasing diversity, quantity, and potential toxicity
Topics: oligomer, toxicity testing
Reading time: 2 minutes
August 10, 2023
Scientists find cyclic polyethylene terephthalate (PET) oligomers migrate into fatty food simulants but not olive oil; levels higher from recycled compared to virgin PET; comprehensive extraction and migration experiments of Tritan™ products find oligomer migration from bottles of no toxicological concern but microwaveable containers were non-suitable for food heating
Reading time: 4 minutes
May 24, 2023
Scientists investigate available research on hazard and exposure of 34 oligomers in PET for food contact; 74% of them found to migrate; only 38% have been tested for their safety using computer models, while only one was tested for safety in organisms; authors call for further research and better risk assessment
Reading time: 2 minutes
February 10, 2023
Review summarizes analysis and presence of oligomers in food contact materials (FCMs) made of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polystyrene (PS) including challenges; study suggests ionic strength may influence migration of polyamide (PA) oligomers from PA FCMs
Reading time: 6 minutes
July 19, 2022
The diversity of oligomeric migrants increases with new (co)monomer varieties used in plastic production; quantitative analysis and toxicological evaluation are challenging
Reading time: 3 minutes
February 8, 2022
Review provides guidance to select analytical technique for non-intentionally added substances (NIAS) identification and quantification in food contact materials (FCMs); scientific studies analyze NIAS migrating from FCMs; develop model to predict collision cross-section values to identify NIAS in FCMs; detect polyethylene terephthalate (PET) oligomers in post-mortem blood samples
Reading time: 4 minutes
November 10, 2021
Research study compares different techniques for oligomer detection and finds polyester oligomers migrate from biopolymers; book chapter discusses catalysts, volatile organic compounds, and additives in bio-based products, including their migration and safety
Reading time: 3 minutes
September 19, 2019
German risk assessment institute uses newly received toxicity data to establish group migration limit of 5mg/kg food for PA6 and PA66 oligomers
Topics: oligomer, toxicity testing
Reading time: 1 minute
December 14, 2018
Study of non-volatile components of biodegradable polyester and polylactic acid blend identifies 37 different compounds including plasticizers and oligomers, some seen only in migration experiments
Reading time: 3 minutes
