Dual Precursor Atmospheric Plasma Deposition of Transparent Bilayer Protective Coatings on Plastics

We demonstrate a dual organic and inorganic precursor method to deposit transparent organosilicate protective bilayer coatings on poly methyl methacrylate (PMMA) substrates with atmospheric plasma deposition in ambient air. The bottom layer was a hybrid organosilicate adhesive layer deposited with d...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2015-08, Vol.7 (32), p.17929-17934
Main Authors: Dong, Siming, Zhao, Zhenlin, Dauskardt, Reinhold H
Format: Article
Language:English
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Summary:We demonstrate a dual organic and inorganic precursor method to deposit transparent organosilicate protective bilayer coatings on poly methyl methacrylate (PMMA) substrates with atmospheric plasma deposition in ambient air. The bottom layer was a hybrid organosilicate adhesive layer deposited with dual organic 1,5-cyclooctadiene (CYC) and widely used inorganic tetraethoxysiline (TEOS) precursors. The selection of the organic CYC precursor allowed incorporation of a carbon chain in the organosilicate adhesive layer, which resulted in improved adhesion. The top layer was a dense silica coating with high Young’s modulus and hardness deposited with TEOS. The deposited bilayer structure showed ∼100% transparency in the visible light wavelength region, twice the adhesion energy, and five times the Young’s modulus of commercial polysiloxane sol–gel coatings.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.5b04622