<i>In situ</i> dissolved polypropylene prediction by Raman and ATR-IR spectroscopy for its recycling
Sofiane Ferchichi, Nida Sheibat‐Othman, Olivier Boyron, Charles Bonnin, Sébastien Norsic, Maud Rey‐Bayle, Vincent Monteil
Abstract
spectroscopic methods are used to predict the dissolved polymer content: Raman spectroscopy and attenuated total reflectance infrared spectroscopy. Commercially available polypropylenes are considered. Different solvents are selected based on their affinity with polypropylene. Partial least squares regression is employed to identify models predicting the polymer concentration for each solvent from the online spectra. Raman spectroscopy was found to give a better prediction. It was therefore used to study different parameters influencing the dissolution process, such as solvent type, temperature and polymer form.
Topics & Concepts
PolypropyleneContext (archaeology)Raman spectroscopyDissolutionSolventIn situSpectroscopyChemical engineeringMaterials scienceChemistryAnalytical Chemistry (journal)ChromatographyOrganic chemistryEngineeringOpticsPhysicsGeologyQuantum mechanicsPaleontologyMicroplastics and Plastic PollutionRecycling and Waste Management TechniquesSpectroscopy and Chemometric Analyses