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Journal ArticleDOI

P‐6.4: Enhanced Moisture Barrier Properties by the Use of Clay Nanoparticle‐embedded Nanocomposite

24 Feb 2021-Vol. 52, pp 550-552
About: The article was published on 2021-02-24. It has received None citations till now. The article focuses on the topics: Nanocomposite.
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Journal ArticleDOI
TL;DR: In this article, thin Al2O3 films of different thicknesses (10−40nm) were deposited by plasma-assisted atomic layer deposition on substrates of poly(2,6-ethylenenenaphthalate) (PEN), and the water vapor transmission rate (WVTR) values were measured by means of the calcium test.
Abstract: Thin Al2O3 films of different thicknesses (10–40nm) were deposited by plasma-assisted atomic layer deposition on substrates of poly(2,6-ethylenenaphthalate) (PEN), and the water vapor transmission rate (WVTR) values were measured by means of the calcium test. The permeation barrier properties improved with decreasing substrate temperature and a good WVTR of 5×10−3gm−2day−1 (WVTRPEN=0.5gm−2day−1) was measured for a 20nm thick Al2O3 film deposited at room temperature using short purging times. Such ultrathin, low-temperature deposited, high-quality moisture permeation barriers are an essential requirement for the implementation of polymeric substrates in flexible electronic and display applications.

257 citations

Journal ArticleDOI
TL;DR: In this paper, a multilayer hybrid organic-inorganic barrier thin films under atmospheric conditions is reported for the first time, each layer of Al2O3 and PVA in barrier thin film exhibited excellent morphological, chemical and optical properties Extremely uniform and atomically thin films of Al 2O3 with average arithmetic roughness (Ra) of 164 and 194 nm respectively concealed the non-uniformity and irregularities in PVA thin films with Ra of 29 and 36 nm respectively.

14 citations

Journal ArticleDOI
TL;DR: In this paper, Solgel-derived, crack-free, and condensed TiO x thin films with improved barrier properties were successfully fabricated on polymeric substrates with a simple two-step heat treatment at low temperatures.

12 citations

Journal ArticleDOI
TL;DR: In this article, vanadium oxide was added in the coating solution to suppress the aggregation of nanofillers via dehydroxylation, which resulted in a smaller pore size.
Abstract: In this study, hybrid nanocomposite films were prepared by a sol-gel method. Al2O3 particles of 100 nm diameter were mixed with small SiO2 nanoparticles of 10 nm in a coating solution. After coating onto a plastic sheet, the water vapor transmittance rate (WVTR) was reduced from 12.2 to 0.15 g m−2 day−1. However, due to the particle aggregation in the Al2O3/SiO2 system, pore size of the barrier coating remained constant despite the Al2O3/SiO2 ratio. To avoid particle aggregation and to reduce the WVTR, vanadium oxide was added in the coating solution to suppress the aggregation of nanofillers via dehydroxylation. From BET analysis, the addition of vanadium oxide resulted in a smaller pore size to further inhibit water vapor penetration. The WVTR was lowered to 0.095 g m−2 day−1 at a relative humidity of 100%, corresponding to an improvement of 99.2% compared to that of the pristine PET.

4 citations

Journal ArticleDOI
TL;DR: In this article, the authors reported the fabrication of low-temperature sol-gel-derived aluminum oxide (AlO x ) films via ultraviolet (UV) annealing and the investigation of their water vapor blocking properties by measuring the water vapor transmission rates (WVTRs).

4 citations


"P‐6.4: Enhanced Moisture Barrier Pr..." refers methods in this paper

  • ...In order to study the effect of clay incorporation on the barrier film WVTR, we performed Ca test [3-4]....

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