- Title
- High-performance oxygen barrier inorganic-organic coating for polymeric substrates
- Creator
- Scully, Andrew D.; Mao, Qinghui; Fell, Christopher J.
- Relation
- Surface and Coatings Technology Vol. 239, p. 222-226
- Publisher Link
- http://dx.doi.org/10.1016/j.surfcoat.2013.11.046
- Publisher
- Elsevier S.A.
- Resource Type
- journal article
- Date
- 2014
- Description
- Aqueous-based inorganic–organic hybrid coating materials comprising self-assembled silica nanophase (SNAP) particles and the sodium salt of 9,10-anthraquinone-2,6-disulfonate (AQDS), an oxygen-scavenging precursor molecule, were coated onto PET films under ambient laboratory conditions using a spiral-bar coating technique. Active SNAP-based coatings containing 0.08% w/w AQDS displayed an oxygen transmission rate of 0.04 ± 0.01 cm³ mil m⁻² day⁻¹ atm⁻¹; an improvement in oxygen barrier by an order of magnitude compared with comparable coatings produced using dip-coating. The spiral-bar coating technique also provided other important technical advantages over the previously used dip-coating method, including a reduction in the AQDS concentration required in the coating solution by almost an order of magnitude. The oxygen barrier performance provided by these single-layer active SNAP-based coatings approaches that provided by other far more sophisticated multi-layer plastic barrier materials produced using vacuum-deposition methods.
- Subject
- silica nanoparticles; inorganic-organic hybrid coating; oxygen barrier; oxygen scavenging; organic photovoltaics; flexible substrates
- Identifier
- http://hdl.handle.net/1959.13/1303019
- Identifier
- uon:20592
- Identifier
- ISSN:0257-8972
- Language
- eng
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