Characterization of VOCs and additives in Italian PET bottles and studies on potential functional aldehydes scavengers

Abstract This study focused on characterization of Volatile Organic Compounds (VOCs) as contaminants and non-volatile additives in Italian PET bottles, also suggesting potential functional aldehydes scavengers. Several VOCs, such acetic aldehyde (AA), butanal, 3-methyl 1,3-dioxolane, pentanal, hexanal, octanal, 5-hepten-2-one, nonanal, decanal, were identified by Head Space-Gas Chromatography/Mass Spectrometry (HS-GC/MS) the bottles used for packaging six brands mineral waters. AA, decanal most abundant compounds identified. These PET-bottled Different experiments using bottle-grade pellets (Btlg-PET) bottles’ fragments with without addition epoxidized soybean oil (ESBO) or erucamide lubricant/plasticizer additives, poly(m-xylene adipamide) (MXD6), and/or anthranilamide (2-aminobenzamide) scavengers carried out. Mostly VOCs observed analysed a neat ESBO sample. The presence additive PET-bottle was matrix-assisted laser desorption/ionization time flight mass spectrometry analysis (MALDI–TOF MS). sub-products not virgin btlg-PET both HS-GC/MS MALDI–TOF MS. results suggest that come from an probably loaded during blow-moulding processes manufacturing bottles. Further studies established MXD6 (1%w), efficient oxygen scavenger, could be AA scavenger even commonly anthranilamide.