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- W2029921208 abstract "Thin films of polyethylenimine (PEI) and poly(acrylic acid) (PAA), deposited using layer-by-layer assembly, were studied to understand the influence of various crosslinking methods on their oxygen and water vapor barrier. Glutaraldehyde (GA), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide methiodide (EDC) and thermal crosslinking were evaluated with respect to film thickness and barrier properties. The thickness of an 8 bilayer PEI/PAA assembly decreased from 640 to 551 nm after crosslinking with a 0.1 M aqueous GA solution and obtained an oxygen permeability one order of magnitude better than an SiOx thin film (<5.9 × 10−21 cm3 cm cm¬2 s¬1 Pa¬1) This same crosslinking treatment reduced the oxygen transmission rate (OTR), measured at 23 °C and 100% RH, from 0.61 to 0.09 (cm3 m−2 day¬1). Increasing the number of bilayers and heating time with thermal crosslinking also reduces the water vapor transmission rate (WVTR). These nanocoatings are a promising alternative to currently used barrier layers for flexible electronics and food packaging." @default.
- W2029921208 created "2016-06-24" @default.
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- W2029921208 date "2012-01-01" @default.
- W2029921208 modified "2023-10-16" @default.
- W2029921208 title "Improving oxygen barrier and reducing moisture sensitivity of weak polyelectrolyte multilayer thin films with crosslinking" @default.
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- W2029921208 doi "https://doi.org/10.1039/c2ra21845c" @default.
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