How cracks in SiOx-coated polyester films affect gas permeation
Description
In this paper theoretical models have been established that can account for the gas transmission through nanocomposite laminates, consisting of an oxide layer of finite permeability containing defects, on a polymer sheet of finite thickness. The defect shapes can either be in the form of long cracks or rectangular holes. The models offer a choice of exact numerical calculations or fast and intuitive analytical approximations. The experimental measurements of oxygen permeation through four different SiOx/poly(ethylene terephthalate) samples that were strained to produce distributions of cracks showed good agreement when compared with predicted results from the approximate analytic model. As a consequence of this observation, a key practical conclusion is that, because of the logarithmic dependence of transmission on the width of a crack, for a given strain it is better to have a small number of large cracks rather than a large number of small cracks.
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ID Code: | 235866 | ||||
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Item Type: | Contribution to Journal (Journal Article) | ||||
Refereed: | Yes | ||||
ORCID iD: |
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Measurements or Duration: | 10 pages | ||||
Keywords: | AFM, Defects, Oxygen transmission, SEM, SiO, Theoretical model | ||||
DOI: | 10.1016/S0040-6090(01)01473-0 | ||||
ISSN: | 0040-6090 | ||||
Pure ID: | 116891917 | ||||
Divisions: | Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Biology & Environmental Science Current > Schools > School of Mathematical Sciences Past > QUT Faculties & Divisions > Division of Administrative Services |
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Copyright Owner: | Consult author(s) regarding copyright matters | ||||
Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||
Deposited On: | 28 Oct 2022 02:50 | ||||
Last Modified: | 24 May 2024 10:43 |
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