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

作者：Dong Siming; Zhao Zhenlin; Dauskardt Reinhold H^*

来源：ACS Applied Materials & Interfaces, 2015, 7(32): 17929-17934.

DOI：10.1021/acsami.5b04622

• transparent multifunctional coatings
• atmospheric plasma
• organosilicate coatings
• dual precursor method
• adhesion

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-cydooctadiene (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 similar to 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.

• 出版日期2015-8-19