Migration of Cyclic Monomer and Oligomers from Polyamide 6 and 66 Food Contact Materials into Food and Food Simulants: Direct Food Contact

Cyclic monomer and oligomers are the major migrating substances from polyamide (PA) food contact materials. An increase of caprolactam (+44%) and cyclic oligomer content (+27%, incl. caprolactam) in PA6 was observed by thermal treatment, here by extrusion of a PA6 film from a granulate. Migration ex...

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Bibliographic Details
Published in:Packaging technology & science 2015-02, Vol.28 (2), p.123-139
Main Authors: Heimrich, Martin, Nickl, Hermann, Bönsch, Martin, Simat, Thomas J.
Format: Article
Language:English
Subjects:
Caprolactam
Contact
Cyclic oligomers
food contact material
Foods
HPLC-CLND
Migration
Monomers
Oligomers
Packaging
polyamide 6
polyamide 66
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Summary:Cyclic monomer and oligomers are the major migrating substances from polyamide (PA) food contact materials. An increase of caprolactam (+44%) and cyclic oligomer content (+27%, incl. caprolactam) in PA6 was observed by thermal treatment, here by extrusion of a PA6 film from a granulate. Migration experiments with a PA6 and a PA66 packaging film were carried out into food simulants according to directives 85/572/EEC and 82/711/EEC. Contact conditions (2 h/100°C) were chosen for a heat treatment of the food in the packaging, in this case production of scalded sausage. Aqueous and ethanolic food simulants clearly revealed to be the worst case for migration of cyclic PA6 and PA66 monomer and oligomers. Migration of cyclic oligomers into oil was one order of magnitude lower. No migration could be observed into isooctane (
ISSN:0894-3214
1099-1522
DOI:10.1002/pts.2094