EAA poly ethylene-co-acrylic acid

Common name - poly(ethylene-co-acrylic acid)  

ACS name - 2-propenolc acid, polymer with ethene  

Number average moiecuiar weight, dalton, g/ mol, amu 280-160,000 Wiggins, K M Bielawski, C W, Polym. Chem., 4, 2239-45, 2013. 

Young s moduius MPa 65-115 Valenza, A Visco, A M Aderno, D, Polym. Test., 21,101-9, 2002. 

Stabilizers benzoyl chloride Matche, R S Kulkarni, G Raj B, J. Appl. Polym. Sci., 100, 3063-68, 2006. 

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Synonyms EAA Poly (ethylene-co-acrylic acid) 2-Propenoic acid with ethene 2-Propenoic acid, polymer with ethene... 

Figure 6. FTIR spectra of components used to produce the starch-containing plastics used in this study (a) low density polyethylene (PE) (b) poly(ethylene-co-acrylic acid) (EAA) and (c) corn starch.

The drive to use starch at higher addition levels requires it to contribute to the expected strength properties. For this to happen, the starch must be disrupted or destructured so that it can form a continuous phase in an extruded matrix. This can be done by extrusion of starch under low moisture conditions, which effects granular fragmentation, melting of hydrogen-bonded crystallites and partial depolymerization. Thermoplastic blends of up to 50% starch and poly(ethylene-co-acrylic acid) (EAA) were produced in the presence of aqueous base, which solubilized EAA and increased its compatibility with starch and urea, which aids in starch gelatinization.147,148... 

Otey et al. [61, 68-71] also described blends of starch with synthetic polymers, in which gelatinized starch was used instead of starch granules. The initial films, composed of 90 per cent of starch blended with poly(ethylene-co-acrylic acid) (EAA), were obtained by casting from aqueous dispersions or by dry milling in a rubber mill, followed by a hot roll treatment, but only the cast films attained acceptable characteristics [71]. These materials were intended for application as mulch films for agriculture. 

Poly(ethylene-co-vinylacetate) EVA, Polyethylene ionomer EIM, Cycloolefine copolymer COC [Poly(ethylene-co-norbornene)], Poly(ethylene-co-acrylic acid) EAA Polyolefines III... 

Table 3.3-ir Poly(ethylene-co-vinyl acetate), EVA polyethylene ionomer, EIM cyclooleflne copolymer, COC (poly-(ethylene-co-norbomene)) poly(ethylene-co-acrylic acid), EAA... 

To increase the starch load up to 40-60% in PO a gelatinized starch is used in the films of poly(ethylene-co-acrylic acid) (EAA) or a mixture of EAA/LDPE or LDPE/EMA (ethylene-maleic anhydride). The difficulty with this system is that the high level of filler seriously impairs the mechanical properties, especially in thin films, and the starch is subjected to moisture-absorption problems. LDPE Mn stea-rate/starch showed a decrease of MW during thermo-oxidation and an increase of MW during UV irradiation. In the mixtures, it has been estabhshed that ethylene-acrylic acid copolymer accelerates LDPE oxidative degradation while plasticized starch inhibits it [62]. 

Two molds were used to form poly(ethylene-co-acrylic acid), EAA perflu-orinated ethylene-propylene copolymer, FEP, and poly(ethylene terephthalate), PET. FET has surface of low energy and PET of high surface energy. Figure 5. 4 shows the effect of mold on composition and properties of a surface of molded material. Surface of EAA formed on PET contains more oxygen than the average concentration in bulk and substantially more than in material formed on FEP. Acid groups are pointed towards the surface of EAA formed on PET and are hidden (or... 

PE with EVAc, CPE, BR, etc., have been chemically foamed at T = 150-210°C 5 to 95 wt% of LDPE or LLDPE with EAA PE with either poly(ethylene-co-vinylcarboxylate) or an acrylate PP with an ionomer and EBA-GMA PP with an ionomer, EBA-GMA and EPDM PO with a core-shell graft copolymer MBS-type PP with acidified-PP, or a carboxylic acid-modified EPR, SMM-MA, and either EMMA-GMA or EVAc-GMA LLDPE, PMMA and SEBS, EPR, or ethylene-styrene block copolymer (ES)... 

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