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Nucleation and growth of gas barrier aluminium oxide on surfaces of poly(ethylene terephthalate) and polypropylene: Effects of the polymer surface properties

Deng, C. S. and Assender, H. E. and Dinelli, F. and Kolosov, Oleg and Briggs, G. Andrew D. and Miyamoto, T. and Tsukahara, Y. (2000) Nucleation and growth of gas barrier aluminium oxide on surfaces of poly(ethylene terephthalate) and polypropylene: Effects of the polymer surface properties. Journal of polymer science part b-Polymer physics, 38 (23). pp. 3151-3162. ISSN 0887-6266

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Abstract

The nucleation and initial stages of growth of aluminium oxide deposited on two different polymer surfaces [poly(ethylene terephthalate), (PET) and amorphous polypropylene, (PP)] have been studied by atomic force microscopy (AFM). The permeation of water vapor and oxygen through the films has been measured. The initial stages of the growth of the oxide consisted of separated islands on the polymer surface. Further growth of oxide depends strongly on the surface morphology and chemical nature of the polymer surface. Growth on PET follows a layer-by-layer mechanism that maintains the native surface roughness of the polymer substrate. Growth on PP, however, follows an island mode, which leads to an increase in surface roughness. This may be due to a lack of chemical bonding between the polymer and the arriving metal-oxygen particles. The oxide layer on PET grows more densely than on PP, providing superior barrier to gas permeation. (C) 2000 John Wiley & Sons, Inc.

Item Type: Article
Journal or Publication Title: Journal of polymer science part b-Polymer physics
Uncontrolled Keywords: electron beam evaporation ; gas barrier ; aluminium oxide ; poly(ethylene terephthalate) ; polypropylene
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57447
Deposited By: ep_importer_pure
Deposited On: 09 Oct 2012 13:26
Refereed?: Yes
Published?: Published
Last Modified: 09 Oct 2012 13:26
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57447

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