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.

Polymers

polypropylene

permeability

gases

films

barrier properties

polyethylene

Permeability

Polymer Science

molecular-weight

issues

Laminates

vapors

Interfaces

copolymers

Engineering

Packaging

Author

Sofie Gårdebjer

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Pharmaceutical Technology

SuMo Biomaterials

Tobias Gebäck

SuMo Biomaterials

Chalmers, Mathematical Sciences, Mathematics

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, Applied Surface 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

SuMo Biomaterials

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Pharmaceutical Technology

Journal of Membrane Science

0376-7388 (ISSN)

Vol. 518 305-312

Subject Categories

Chemical Sciences

Areas of Advance

Materials Science

DOI

10.1016/j.memsci.2016.06.045

More information

Latest update

11/3/2021