Advanced search
478
Views
33
CrossRef citations to date
0
Altmetric
Original Articles

Migration of model contaminants from PET bottles: influence of temperature, food simulant and functional barrier

, &
Pages 993-1006
Received 19 Oct 2001
Accepted 11 Aug 2004
Published online: 20 Feb 2007
 

To simulate post-consumer recycled plastics, selected model contaminants were incorporated into PET bottles using a time saving method. Migration into 3% acetic acid, a cola-type beverage and 95% ethanol was followed during 1 year of storage at 20 and 40°C. Aroma compounds previously found in post-consumer PET material were used as model contaminants. Benzaldehyde was found to migrate to the highest extent. Storage at 40°C affected the bottle material and this might be one reason for the high migration values of these bottles. Migration into ethanol was up to 20 times higher than into 3% acetic acid or a cola-type beverage. Bottles with a functional barrier resisted migration into food simulants even when filled with 95% ethanol and stored for 1 year at 40°C. Differential scanning calorimetry measurements showed that ethanol was interacting with the plastic material. This resulted in a lower glass transition temperature of bottles stored with ethanol compared with bottles stored empty or with other food simulants.

Acknowledgements

AB Kulleborn & Stenström, Ullared, Sweden, is greatly acknowledged for its collaboration in the preparation of the bottles. Work was financially supported by the Swedish Council for Forestry and Agricultural Research (Project no. 50.0533/96).

 

Related research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.