The impact of interfaces in laminated packaging on transport of carboxylic acids
Artikel i vetenskaplig tidskrift, 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.

Laminates

Engineering

copolymers

permeability

polyethylene

Interfaces

Polymers

gases

films

vapors

polypropylene

molecular-weight

Packaging

Polymer Science

issues

Permeability

barrier properties

Författare

Sofie Gårdebjer

SuMo Biomaterials

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Farmaceutisk teknologi

Tobias Gebäck

Göteborgs universitet

SuMo Biomaterials

Chalmers, Matematiska vetenskaper, Matematik

Thorbjörn Andersson

Tetra Pak

Chalmers

E. Fratini

Universita degli Studi di Firenze

P. Baglioni

Universita degli Studi di Firenze

Romain Bordes

SuMo Biomaterials

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Anna Viridén

Chalmers

AstraZeneca AB

Mark Nicholas

AstraZeneca AB

Chalmers

Niklas Lorén

Chalmers, Fysik, Eva Olsson Group

SuMo Biomaterials

Anette Larsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Farmaceutisk teknologi

SuMo Biomaterials

Journal of Membrane Science

0376-7388 (ISSN)

Vol. 518 305-312

Ämneskategorier

Kemi

Styrkeområden

Materialvetenskap

DOI

10.1016/j.memsci.2016.06.045