Toward roll-to-roll deposition of high quality moisture barrier films on polymers by atomospheric pressure plasma assisted process

S.A. Starostin, M. Creatore, J.B. Bouwstra, M.C.M. Sanden, van de, H.W. Vries, de

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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 languageEnglish
Pages (from-to)545-554
JournalPlasma Processes and Polymers
Volume12
Issue number6
DOIs
Publication statusPublished - Jun 2015

Keywords

  • atmospheric pressure glow discharges (APGD)
  • dielectric barrier discharges
  • gas diffusion barrier films
  • roll-to-roll reactors
  • water-vapour permeability

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