Request PDF on ResearchGate Graphene: Super Gas Barrier and Selectivity of Graphene Oxide-Polymer Multilayer Thin Films Adv. Mater. 4/2013 A flexible and transparent gas barrier remains a. In addition to the properties mentioned above, the super gas barrier exhibited by some assemblies has led to significant study,,. Two approaches have been used to produce low oxygen permeability. The first is to create an extremely tortuous path by layering nanoplatelets, such as clay and graphene oxide,. The impermeable gas platelets create a tightly packed nanobrick wall structure that significantly extends the diffusion pathway of a gas molecule. Meanwhile, the polymer-clay nanocomposite exhibits significant potential as a high-performance barrier material owing to its enhanced gas-barrier property and mechanical strength [,, ]. The multi-stacked plate-like structure of the clay barrier layer allows the formation of extended moisture diffusion paths, resulting in enhanced water vapour transmission value WVTR; the remarkably high aspect ratio and exemplary molecular impermeability.
Nov 01, 2019 · Well-defined vermiculite nanolayers have been exfoliated from nature mineral by a simple water-assisted anion-exchange approach. By self-assembly of vermiculite nanolayers with poly vinyl alcohol, highly oriented vermiculite-polymer composite films were successfully achieved under the hydrogen bond interaction. The growth of the films was studied by SEM cross-section measurement. Fig. 2 shows the evolution of the thickness a, the weight gain b and density as a function of the number of bilayers deposited. The thickness of PAH–MMT n coatings deposited onto silicon wafers grows exponentially with the number of bilayers deposited. The film has a thickness of approximately 5 μm after only 20. The super gas barrier performance of LbL deposited films has been demonstrated in numerous studies, with a variety of polyelectrolytes, to rival that of metal and metal oxide-based barrier films. Jul 01, 2017 · Because the hundreds of layers of densely packed nanosheets led to superior gas barrier properties, such a structure should be able to significantly lower heat and oxygen transfer and thus might be effective in flame retardation as well. Super gas barrier of transparent polymer–clay multilayer ultrathin films. Exceptional flame.
This "Cited by" count includes citations to the following articles in Scholar. Super gas barrier of transparent polymer− clay multilayer ultrathin films. MA Priolo, D Gamboa, KM Holder, JC Grunlan. Super gas barrier of all-polymer multilayer thin films. YH. Priolo MA, Gamboa D, Holder KM, Grunlan JC 2010 Super gas barrier of transparent polymer-clay multilayer ultrathin films. Nano Lett 10:4970 CrossRef Google Scholar 3. Processing and Gas Barrier Behavior of Multilayer Thin Nanocomposite Films. August 2012 You-Hao Yang, B.S., National Taiwan University. Chair of Advisory Committee: Dr. Jaime C. Grunlan. Thin films with the ability to impart oxygen and other barriertypes of are gas crucial to commercial packaging applications. Commodity polymers, such as.
Layer by layer LbL film deposition is an efficient technique used to produce thin coatings with high gas barrier properties. In this study, multilayer composite coatings with hydrogen bonding inter-layer interactions were deposited by LbL on a PET substrate, with an alternate deposition of a. Title: Super Gas Barrier of Transparent Polymer-Clay Multilayer Ultrathin Films: Authors: Priolo, Morgan A.; Gamboa, Daniel; Holder, Kevin M.; Grunlan, Jaime C. Jun 11, 2019 · This tortuous pathway theory is a universal concept to gas barrier 16, moisture barrier 3, heat transfer 3, molecular migration 17 and ionic conductvity 18 that is widely adopted in packaging. Super Gas Barrier It is nearly impossible to incorporate more than a few weight percent of clay into traditional bulk composites. Depositing clay in a layer-by-layer fashion creates thin films that are fully dense, completely transparent shown on an actual device in the image below, and contain as much as 96 wt. % of completely exfoliated.
Jan 18, 2013 · Abstract. A flexible and transparent gas barrier remains a key challenge for high performance food and flexible electronics packaging. A transparent nanobrick wall of graphene oxide nanoplatelets and polyethylenimine < 100 nm thick, deposited using the layer-by-layer assembly technique, reduces the oxygen permeability of PET film by orders of magnitude, as reported by Jaime. Layer-by-layer LbL assembled polymer–clay multilayer thin films are known to provide transparent and flexible gas barrier. In an effort to further lower the oxygen transmission rate OTR of these nanobrick wall thin films, sodium chloride was introduced into montmorillonite MMT suspension as an “indifferent electrolyte”. At pH 6.5 the amphoteric edge sites of MMT have .
Super gas barrier of transparent polymer-clay multilayer ultrathin films. NANO LETTERS. 1012, 4970-4974. Improvements in Processing and Stretchability of Super Gas Barrier Multilayer Thin Films. Yang, You-Hao 2012-08. Processing and Gas Barrier Behavior of. May 31, 2019 · Priolo M A, Gamboa D, Holder K M and Grunlan J C 2010 Super gas barrier of transparent polymer-clay multilayer ultrathin films Nano Lett. 10 4970–4 Crossref Google Scholar . “Layer by layer” technology was used to create transparent, thin and high barrier polyethylene films to use in food packaging. These films were made by inserting successive layers of. Stiff and Transparent Multilayer Thin Films Prepared Through Hydrogen-Bonding Layer-by-Layer Assembly of Graphene and Polymer [Super Stiff and Highly Transparent Multilayer Thin Films Prepared through Hydrogen-Bonding Layer-by-Layer Assembly of Graphene and Polymer].
Flexible transparent clay films with heat resistant and high gas‐barrier properties are fabricated by using a simple casting procedure. The properties are as follows, lower than 0.1 cm 3 20 μm m –2 day –1 atm –1 for oxygen permeability, over 90 % total visible‐light transmittance, and heat durability up to 350 °C. Nov 07, 2014 · Even though nanocellulose provides a high barrier for oxygen, the water vapor barrier properties are low. the water vapor permeability of the paper substrates was substantially decreased with a multilayer coating of nanocellulose and alkyd resins. Holder KM, Grunlan JC: Super gas barrier of transparent polymer - clay multilayer.
Transparent Super Gas Barrier Film Provides high gas barrier capability almost comparable to that of glass, preventing degradation of organic materials. This gas barrier film prevents the degradation of organic materials, eliminating the effects of even infinitesimal quantities of moisture and oxygen.
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