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Migration of monome...
Migration of monomers from liquid crystalline poly(p-hydroxybenzoic acid-co-2-hydroxy-6-naphthoic acid)
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Flodberg, G. (författare)
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Hojvall, L. (författare)
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- Hedenqvist, Mikael S. (författare)
- KTH,Polymerteknologi
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visa fler...
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- Gedde, Ulf W. (författare)
- KTH,Polymerteknologi
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(creator_code:org_t)
- Informa UK Limited, 2002
- 2002
- Engelska.
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Ingår i: Food Additives and Contaminants. - : Informa UK Limited. - 0265-203X .- 1464-5122. ; 19:5, s. 492-501
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Liquid-crystalline co-polyesters (e.g. a random co-polyester based on p-hydroxybenzoic acid (HBA) and 2-hydroxy-6-naphthoic acid (HNA) known as Vectra A950) offer good barrier properties, but for food-contact use require overall and specific migration testing. For Vectra A950 films, the highest overall migration level obtained was 2.3 mg kg(-1) in olive oil (10 days at 40degrees C) well below the EC limit of 60 mg kg(-1). The highest specific migration for p-hydroxybenzoic acid was 15.2 mug dm(-2) in olive oil (2 h at 175degreesC). For 2-hydroxy-6-naphthoic acid, the highest value obtained was 4.3 mug dm(-2) in 10% ethanol (4 h at 100degrees C), although it was not on the EC positive and cannot yet be used for food-contact materials. At conditions considered as severe, the estimated daily intake for p-hydroxybenzoic acid was calculated as 11.9 mug/person day(-1) and for 2-hydroxy-6-naphthoic acid it was 5.3 mug/person day(-1). The results exceed the threshold of regulation of 1.5 mug/person day(-1).
Nyckelord
- liquid crystalline polymer
- Vectra A950
- migration
- high performance liquid chromatography
- p-hydroxybenzoic acid
- 2-hydroxy-6-naphthoic acid
- chromatography
- behavior
- phase
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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