Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Ethylene vinyl alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde, the copolymer is prepared by polymerization of ethylene and vinyl acetate to give the ethylene vinyl acetate (EVA) copolymer followed by hydrolysis. EVOH copolymer is defined by the mole % ethylene content: lower ethylene content grades have higher barrier properties; higher ethylene content grades have lower temperatures for extrusion.
The plastic resin is commonly used as an oxygen barrier in food packaging. It is better than other plastics at keeping air out and flavors in, is highly transparent, weather resistant, oil and solvent resistant, flexible, moldable, recyclable, and printable. Its drawback is that it is difficult to make and therefore more expensive than other food packaging. Instead of making an entire package out of EVOH, manufacturers keep costs down by coextruding or laminating it as a thin layer between cardboard, foil, or other plastics.[1][2]
It is also used as a hydrocarbon barrier in plastic fuel tanks and pipes.
^Mokwena, K. Khanah; Tang, Juming (2012). "Ethylene Vinyl Alcohol: A Review of Barrier Properties for Packaging Shelf Stable Foods". Critical Reviews in Food Science and Nutrition. 52 (7): 640–650. doi:10.1080/10408398.2010.504903. PMID 22530715. S2CID 28396532.
^Lagaron, J. M.; Catalá, R.; Gavara, R. (2004). "Structural characteristics defining high barrier properties in polymeric materials". Materials Science and Technology. 20 (1): 1–7. Bibcode:2004MatST..20....1L. doi:10.1179/026708304225010442. S2CID 135567487.
and 24 Related for: Ethylene vinyl alcohol information
Ethylenevinylalcohol (EVOH) is a formal copolymer of ethylene and vinylalcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde...
practical precursor to any compound. Vinylalcohol can be formed by the pyrolytic elimination of water from ethylene glycol at a temperature of 900 °C and...
ring-opening. Ethylene oxide is isomeric with acetaldehyde and with vinylalcohol. Ethylene oxide is industrially produced by oxidation of ethylene in the presence...
space. Ethylene glycol is produced from ethylene (ethene), via the intermediate ethylene oxide. Ethylene oxide reacts with water to produce ethylene glycol...
ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula CH3CH2OH. It is an alcohol, with its...
containing one of the two compounds. Ethylene/vinylalcohol copolymer (EVOH) is (formally) a copolymer of PE and vinylalcohol (ethenol), which is prepared by...
Vinyl acetate is the acetate ester of vinylalcohol. Since vinylalcohol is highly unstable (with respect to acetaldehyde), the preparation of vinyl acetate...
can explode. Isopropyl alcohol, via its metabolites, is somewhat more toxic than ethanol, but considerably less toxic than ethylene glycol or methanol. Death...
anhydride, ammonia, bio-butanol, bio-ethanol, ethyl acetate (ETAC) and ethylene-vinylalcohol copolymer (EVOH) with animal feed also being produced on site. The...
organic chemistry, a vinyl group (abbr. Vi; IUPAC name: ethenyl group) is a functional group with the formula −CH=CH2. It is the ethylene (IUPAC name: ethene)...
therapy. In interventional radiology, DMSO is used as a solvent for ethylenevinylalcohol in the Onyx liquid embolic agent, which is used in embolization...
but mostly the softer copolymer, a combination of vinyl acetate and ethylene, vinyl acetate ethylene (VAE), is also used in paper coatings, paint and other...
polyvinyl alcohol, (CH2CHOH)n, is produced by hydrolysis of polyvinyl acetate. Vinylalcohol is not sufficiently stable to undergo polymerization. Vinyl polymers...
and the occlusion of blood vessels most commonly is obtained with ethylenevinylalcohol copolymer (Onyx) or n-butyl cyanoacrylate. These substances are...
Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula C2H4 or H2C=CH2. It is a colourless, flammable gas with a faint "sweet and musky"...
mass: 44.0262 u) may refer to: Acetaldehyde (ethanal) Ethenol (vinylalcohol) Ethylene oxide (epoxyethane, oxirane) This set index page lists chemical...
half life is five days, so it only temporarily embolizes vessels. EthyleneVinylAlcohol Copolymer, soluted in Dimethyl-Sulfoxide (DMSO) under the trade...
(also called methyl alcohol and wood spirit, amongst other names) is an organic chemical compound and the simplest aliphatic alcohol, with the chemical...
reaction to afford vinyl derivatives. Alcohols, thiols, and secondary amines add to acetylene to give the vinyl ethers, vinyl sulfides, and vinyl amines, respectively...
Polyvinyl chloride (alternatively: poly(vinyl chloride), colloquial: vinyl or polyvinyl; abbreviated: PVC) is the world's third-most widely produced synthetic...
produced by oxidation of propylene, which is a byproduct of the production of ethylene and gasoline: 2 CH2=CHCH3 + 3 O2 → 2 CH2=CHCO2H + 2 H2O Because acrylic...
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