Effect of aluminum oxide coating on structural, barrier and electret properties of polyethylene terephthalate films

Author

Galikhanov, M.F. ; Guzhova, A.A. ; Efremova, A.A. ; Nazmieva, A.I.

Author_Institution

Kazan Nat. Res. Technol. Univ., Kazan, Russia

Volume

22

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1492

Lastpage

1496

Abstract

Polyethylene terephthalate film 12 μm thick with vacuum-deposited AlO_x coating was studied. Optical and atomic force microscopy was used to investigate surface topology. Film haze, optical density, surface tension, oxygen and vapor transmission rates were measured to estimate barrier performances of the film. To study effect of the coating on electret properties of the film surface potential, electric field strength and efficient surface charge density and thermally stimulated surface potential relaxation were measured. Optimal charging conditions for coated and uncoated polyethylene terephthalate films were found. Interaction of the film with different model mediums simulating foodstuff was studied. Coated electret film can be used as active packaging material with high barrier properties.

Keywords

aluminium compounds; atomic force microscopy; optical microscopy; packaging; polymer films; relaxation; surface tension; vacuum deposited coatings; AlO_x; active packaging material; aluminum oxide coating; atomic force microscopy; barrier performances; barrier properties; coated polyethylene terephthalate films; efficient surface charge density; electret properties; electric field strength; film haze; film surface potential; optical density; optical microscopy; optimal charging conditions; oxygen transmission rates; size 12 mum; surface tension; surface topology; thermally stimulated surface potential relaxation; uncoated polyethylene terephthalate films; vacuum-deposited coating; vapor transmission rates; Coatings; Corona; Electrets; Films; Polymers; Positron emission tomography; Surface treatment; Corona; charge injection; dielectric film; electret; packaging; plastics;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2015.7116342

Filename

7116342