The impact of interfaces in laminated packaging on transport of carboxylic acids
Journal article, 2016
The permeability of oleic and acetic acid through low density polyethylene (LDPE) and ethylene acrylic acid (EAA) have been measured using diffusion cells. In addition, the permeability through combinations of LDPE and EAA in the form of laminates with different numbers of layers has been determined. Oleic acid shows an almost 30 times higher permeability compared to acetic acid, which was partly explained by the adsorption of oleic acid to the film surface during the permeability experiment. In addition, the permeability is lower for both oleic and acetic acid in the laminates compared to the pure films. The decreased permeability can be explained by the presence of crystalline domains close to the interface. This is supported by SAXS data which suggests an ordering of polymer chains in the EAA film close to the interface. In summary, the results show that it is possible to create barrier materials with decreased permeability, which is interesting for example in the packaging industry. (C) 2016 Elsevier B.V. All rights reserved.
gases
copolymers
Interfaces
Engineering
Laminates
polyethylene
molecular-weight
polypropylene
barrier properties
permeability
issues
vapors
Polymer Science
films
Polymers
Permeability
Packaging
Author
Sofie Gårdebjer
SuMo Biomaterials
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Tobias Gebäck
Chalmers, Mathematical Sciences, Mathematics
SuMo Biomaterials
Thorbjörn Andersson
SuMo Biomaterials
Tetra Pak
E. Fratini
University of Florence
P. Baglioni
University of Florence
Romain Bordes
SuMo Biomaterials
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Anna Viridén
AstraZeneca AB
SuMo Biomaterials
Mark Nicholas
SuMo Biomaterials
AstraZeneca AB
Niklas Lorén
SuMo Biomaterials
SIK – the Swedish Institute for Food and Biotechnology
Anette Larsson
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
SuMo Biomaterials
Journal of Membrane Science
0376-7388 (ISSN) 18733123 (eISSN)
Vol. 518 305-312Subject Categories
Polymer Chemistry
Other Physics Topics
Chemical Sciences
Areas of Advance
Materials Science
DOI
10.1016/j.memsci.2016.06.045