The Mass Spectrometry Method Reveals the Thermal History of Recycled Polymers

The Mass Spectrometry Method Reveals the Thermal History of Recycled Polymers ...

BioChromato Inc. has demonstrated how a thermal desorption and Pyrolysis/direct analysis in real-time-Mass spectrometry (TDP/DART-MS) analysis technique can uncover the thermal history of thermoplastic resins.

Recycling thermoplastic resins such as polypropylene is regarded as a vital step to improve the environment. However, physical properties of thermoplastic resins such as strength and ability to elongate are known to degrade after repeated thermal reprocessing. It is important to have analytical methods that can quickly and reliably reveal the thermal history of recycled polymers. Many conventional analytical methods however fail to detect differences between virgin and recycled thermoplastic resins.

TDP/DART-MS can be a beneficial way to measure thermal history by employing thermoplastic resins as a thermal history marker, according to an IonRocket sample introduction device.

BioChromato''s ionRocket is a temperature-heating technology that allows for direct thermal desorption and pyrolysis of samples before being ionized and analysed by mass spectrometry. In only a few minutes, a temperature gradient from ambient to 600C can be rapidly pyrolyzed and then introduced into the DART-MS gas stream.

BioChromato has published a technical poster (see https://biochromato.com/wp-content/uploads/EI-067_Evaluation-of-thermoplastic-resins.pdf) that demonstrates how TDP/DART-MS, utilizing an ion-Rocket device, provides qualitative and quantitative information on antioxidant additives incorporated into recycled polypropylene compared to virgin polymer pellets. This work demonts the potential of TDP/DART-

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