Abstract
An atmospheric pressure dielectric barrier discharge (DBD) was applied for the deposition of silica-like moisture barrier films on polyethylene 2,6 naphthalate foil. The diffuse plasma was sustained between two cylindrical drum electrodes in N2/O2/Ar gas flow with the addition of tetraethyl orthosilicate. The chemical composition, morphology and water vapour transmission rate of the moisture permeation barrier layers were studied as a function of the dynamic deposition rate and substrate temperature. It was demonstrated that dense silica-like layers of 100¿nm thick with a good permeation barrier of ˜1.8¿×¿10-3¿g¿·¿m-2¿·¿day (at 40¿°C, 90% RH), corresponding to three orders of magnitude barrier improvement with respect to the pristine polymer, can be deposited in an atmospheric pressure process.
Original language | English |
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Pages (from-to) | 545-554 |
Journal | Plasma Processes and Polymers |
Volume | 12 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2015 |
Keywords
- atmospheric pressure glow discharges (APGD)
- dielectric barrier discharges
- gas diffusion barrier films
- roll-to-roll reactors
- water-vapour permeability