Structural and Barrier Properties of Compatibilized PE/PA6 Multinanolayer Films - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Membranes Année : 2021

Structural and Barrier Properties of Compatibilized PE/PA6 Multinanolayer Films

Résumé

The barrier performance and structural lightening of organic materials are increasingly desired and constitute a major challenge for manufacturers, particularly for transport and packaging. A promising technique which tends to emerge in recent years is that of multinanolayer coextrusion. The advantage is that it can produce multilayers made of thousands of very thin layers, leading to new properties due to crystalline morphology changes induced by confinement. This paper is focusing on the study of multinanolayered films with alternated polyethylene (PE), compatibilizer (PEgMA) and polyamide 6 (PA6) layers and made by a forced assembly coextrusion process equipped with layer multiplying elements (LME). PE/PA6 multilayer films consisting of 5 to 2049 layers (respectively 0 to 9 LME) were successfully obtained with well-organized multilayered structure. The evolution of the morphology and the microstructure of these two semi-crystalline polymers, when the thickness of each polymer layer decreases from micro-scale to nano-scale, was correlated to the water and gas transport properties of the PE/PA multilayers. The expected improvement of barrier properties was limited due to the on-edge orientation of crystals in very thin PE and PA6 layers. Despite this change of crystalline morphology, a slight improvement of the gas barrier properties was shown by comparing experimental results with permeabilities predicted on the basis of a serial model developed by considering a PE/PA6 interphase. This interphase observed by TEM images and the on-edge crystal orientation in multilayers were evidenced from mechanical properties showing an increase of the stiffness and the strength.
Fichier principal
Vignette du fichier
membranes-11-00075-v3.pdf (6.59 Mo) Télécharger le fichier
Origine : Publication financée par une institution
Licence : CC BY - Paternité

Dates et versions

hal-03139488 , version 1 (04-09-2023)

Licence

Paternité

Identifiants

Citer

Quentin Lozay, Quentin Beuguel, Nadège Follain, Laurent Lebrun, Alain Guinault, et al.. Structural and Barrier Properties of Compatibilized PE/PA6 Multinanolayer Films. Membranes, 2021, 11 (2), pp.75. ⟨10.3390/membranes11020075⟩. ⟨hal-03139488⟩
75 Consultations
39 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More