Migrating components in a polyurethane laminating adhesive identified using gas chromatography/mass spectrometry

Abstract

Complementary use of several hyphenated mass spectrometric methods enables successful identification of leachable compounds in the PUR adhesive under study. This opens the way for quantification and evaluation of the potential toxicities of these compounds. Despite the range of compositions of PUR laminates, the approach presented here may be applicable for the qualitative assessment of all PURs.

Identification of unknown compounds from polyester cans coatings that may potentially migrate into food or food simulants

“…This is attributed to the presence of isomers or substances with the same composition but different structure or oligomers with different identities [13] as well as oligomers high MW fragmenting in the source to give same fragment compound but at different retention time. Most of the oligomers correspond to linear structures, but cyclic structures were also identified, which is consistent with previous literature in can coatings [5,13] and also in certain adhesives employed for packaging [28,29].…”

Food packaging simulant failure mechanisms in next generation steel packaging

“…17 With BPA non-intent (BPANI), migration studies have been carried out on coatings of similar chemistry, 18,19 as is common with all new coating formulations, with a multitude of analytical techniques used such as gas chromatography and mass spectrometry. 20 While these methods of interaction are relatively well reported, the effect of the simulant solution/foodstuff on the adhesion of a coating to the substrate, or the substrate itself post-retort, has not been reported in depth. Some work has been conducted exploring the delamination mechanism of an epoxy coating from a steel substrate, using electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS) to determine than an acid treatment improves the resistance against cathodic delamination, 21 most notably in a NaCl solution.…”

“…With BPA non‐intent (BPANI), migration studies have been carried out on coatings of similar chemistry, as is common with all new coating formulations, with a multitude of analytical techniques used such as gas chromatography and mass spectrometry . While these methods of interaction are relatively well reported, the effect of the simulant solution/foodstuff on the adhesion of a coating to the substrate, or the substrate itself post‐retort, has not been reported in depth.…”

Risk assessment derived from migrants identified in several adhesives commonly used in food contact materials

“…Although in the most common applications, the adhesive is not in direct contact with the packed food, it has been demonstrated that volatile and nonvolatile compounds can migrate from the adhesive through the different layers, except aluminium, to the food (Athenstadt et al, 2012;Aznar et al, 2011;Canellas et al, 2010a;Nerin et al, 2012;Sendon et al, 2012;Vera et al, 2011Vera et al, , 2013Vera et al, , 2014.…”