Determination of Partition Coefficients of Selected Model Migrants between Polyethylene and Polypropylene and Nanocomposite Polypropylene
| Autor: | Raquel Sendón, José Manuel Cruz, Perfecto Paseiro-Losada, Pablo Otero-Pazos, David A. Pereira de Abreu, Ana Rodríguez-Bernaldo de Quirós, I. Angulo |
|---|---|
| Přispěvatelé: | Universidade de Santiago de Compostela. Departamento de Química Analítica, Nutrición e Bromatoloxía |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Polypropylene Nanocomposite Article Subject Diffusion 04 agricultural and veterinary sciences General Chemistry Polymer Polyethylene 040401 food science Food packaging Partition coefficient lcsh:Chemistry Investigación::23 Química [Materias] Low-density polyethylene chemistry.chemical_compound 0404 agricultural biotechnology chemistry Chemical engineering lcsh:QD1-999 Organic chemistry |
| Zdroj: | Journal of Chemistry, Vol 2016 (2016) Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname |
| Popis: | Studies on nanoparticles have focused the attention of the researchers because they can produce nanocomposites that exhibit unexpected hybrid properties. Polymeric materials are commonly used in food packaging, but from the standpoint of food safety, one of the main concerns on the use of these materials is the potential migration of low molecular substances from the packaging into the food. The key parameters of this phenomenon are the diffusion and partition coefficients. Studies on migration from food packaging with nanomaterials are very scarce. This study is focused on the determination of partition coefficients of different model migrants between the low-density polyethylene (LDPE) and polypropylene (PP) and between LDPE and nanocomposite polypropylene (naPP). The results show that the incorporation of nanoparticles in polypropylene increases the mass transport of model migrants from LDPE to naPP. This quantity of migrants absorbed into PP and naPP depends partially on the nature of the polymer and slightly on the chemical features of the migrant. Relation (RPP/naPP) between partition coefficientKLDPE/PPand partition coefficientKLDPE/naPPat 60°C and 80°C shows that only BHT at 60°C has aRPP/naPPless than 1. On the other hand, bisphenol A has the highestRPP/naPPwith approximately 50 times more. |
| Databáze: | OpenAIRE |
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