Ethylene -vinyl alcohol copolymer EVAL

In the present work we have used, therefore, dextran as the water-soluble macromolecule to be coupled and a film of an ethylene-vinyl alcohol copolymer (EVAL) as the substrate material. This copolymer has hydroxyl groups but is insoluble in water and can be injection-molded to yield a material with good mechanical properties. The coupling reaction of dextran onto the film surface will be achieved by using diisocyanate, since dextran, as well as EVAL, has hydroxyl groups which readily react with isocyanate under formation of urethane linkage. [Pg.218]

Ethylene vinyl alcohol copolymer (EVAL or EVOH)... [Pg.189]

There are two polymers used in a maj ority ofhigh barrier food packages copolymers containing polyvinylidene chloride (Saran ) and ethylene-vinyl alcohol copolymer (Eval, Selar-OH ). Packages in which either polyvinylidene chloride or ethylene-vinyl alcohol copolymer (EvOH) provide the barrier are invariably multilayer since neither of these materials offers the properties required to make a good monolayer structure. There are advantages and disadvantages associated with each of these materials, and the... [Pg.203]

Extruded ethylene vinyl alcohol copolymer (EVAL) is used as an oxygen-barrier packaging material. Dry EVAL has extremely low oxygen permeability, but the vinyl alcohol part of the copolymer is hydrophilic, and in the swollen wet state its permeability becomes higher than that of PVDC (Fig. 11.5). [Pg.329]

Eval E105A, Eval E151A. See Ethylene/vinyl acetate/vinyl alcohol copolymer Eval EF-E, Eval EF-F, Eval EF-XL. See Ethylene/vinyl alcohol copolymer Eval F100A, Eval F101A, Eval F104A. See Ethylene/vinyl acetate/vinyl alcohol copolymer Eval G115. See Ethylene/vinyl alcohol copolymer... [Pg.1790]

Coextrusion is widefy used in film making. For example, when packaging wine or fruit juices it is vital to retain fragrance and to inhibit the entiy of undesirable gases (oxygen in particular). The best barrier film for this function is ethylene-vinyl alcohol copolymer (EVAL) ... [Pg.357]

Elvanol PVAl, ethylene-vinyl alcohol copolymers, EVAl E. I. du Pont de Nemours... [Pg.2299]

Ethylene-vinyl alcohol copolymer (EVAL, E/ VAL, and EVOH) n. A family of copolymers made by hydrolyzing ethylene-vinyl acetate copolymers with high VA content. Those containing about 20-35% ethylene are useful as barriers to many vapors and gases, though not to water. Because of their water sensitivity, they are usually sandwiched between layers of other polymers. [Pg.377]

Yamashita K, Taki W, lwata H et al. (1994) Characteristics of ethylene vinyl alcohol copolymer (EVAL) mixtures. AJNR Am J Neuroradiol 15 1103-1105 Yasargil MG (1988) Deep central AVMs. In Yasargil MG (ed) Microneurosurgery IIIB. AVM of the brain. Clinical considerations, general and special operative techniques, surgical results, nonoperated cases, cavernous and venous angiomas, neuroanesthesia. Thieme, Stuttgart, pp 204-368... [Pg.120]

Ethylene vinyl alcohol copolymer (EVAL , EVOH) Asahi Kasei Medical Co., Ltd., Tokyo, Japan KF-201-1.3C... [Pg.382]

Group 4, Ethylene vinyl alcohol copolymer family Manber Ethylene vinyl alcohol copolymer (EVAL, EVOH, Kawasumi/Kuraray Laboratories, Japan) with of a series of different EVAL/EVOH modifications (Table 13.6). [Pg.391]

The ethylene vinyl alcohol copolymer (EVAL/EVOH) is a hydrophilic and uncharged synthetic polymer blend [62]. The polymer used to fabricate EVOH membranes is a random copolymer of ethylene and vinylalcohol. Due to its original hydrophilicity, no hydrophilizing agents, such as polyvinylpyrrolidone (PVP), are needed. EVOH membranes have a smooth surface and retain stmctnral water. As a consequence, they adsorb few plasma proteins and membrane fonfing during... [Pg.391]

Figure 1. Reaction scheme for coupling of dextran or aminodextran to produce a diffuse surface. Key EVAL, ethylene—vinyl alcohol copolymer and HMDT, hexamethylene diisocyanate.

EvOH- 32 refers to ethylene-vinyl alcohol copolymer with 32 mol % ethylene. All subsequent references to EvOH-32 will be for Evalca Eval-F grade material. ... [Pg.205]

Iwasaki, H. and Yasuhiro Ogino, "Permeability of Laminated Ethylene-vinyl Alcohol Copolymer to Oxygen (Studies on Gas Barrier Resin EVAL -No. 4", Kobunshi Ronbunshu 1978,. 35. pp 487-492. [Pg.223]

EVAl ethylene vinyl alcohol copolymer RI radical initiator... [Pg.415]

PEO = poly(ethylene oxide), PBE = poly(benzyl ether), CALB -Candida antarctica lipase B, PVA = poly(vinyl alcohol), HEMA = hydroxyethyl methacrylate, EVAL = ethylene-vinyl alcohol copolymer, PAA = poly(acrylic acid), PMMA = poIy(methyl methacrylate)... [Pg.6]

EPS expandable polystyrene EVAL ethylene-vinyl alcohol copolymer (or... [Pg.594]

EUROMAP European Committee of Machine Manufacturers for the Rubber Plastics Industries (Zurich, Swiz.) EVAL ethylene-vinyl alcohol copolymer (or EVOH)... [Pg.1097]

Eufl/ Ethylene Vinyl Alcohol Copolymers Resins Resins, Key Properties and Applications. Eval Company of America product bulletin. Lisle, lU., 1992. [Pg.117]

Ethylene/vinyl acetate/vinyl alcohol copolymer Eval E105A Eval F104A 26264-02-8 Nonoxynol-S 26264-0 1 Calimulse PR... [Pg.1775]

EVAL Ethylene-vinyl alcohol copolymers, EVAc EVAL Co. of Amcnica... [Pg.2301]

Taki W, Kikuchi H, Iwata H et al. (1990) Embolization of arteriovenous malformations using EVAL mixture (a new liquid embolization material). Neuroradiology 33 195-196 Terada T, Nakamura Y, Nakai K, Tsuura M et al. (1991) Embolization of arteriovenous malformations with peripheral aneurysms using ethylene vinyl alcohol copolymer report of three cases. J Neurosurg 75 655-660 The Arteriovenous Malformation Study Group (1999) Arteriovenous malformations of the brain in adults. N Engl J Med 340 1812-1818... [Pg.119]

Melting temperature, DSC °C 155-205 Ethylene vinyl alcohol copolymer explained, EVAL (Kuiaray). [Pg.139]

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