Compatibilization of poly(ethylene-co-vinyl alcohol) (EVOH) and EVOH-HDPE blends: Structure and properties

Kalfoglou, Nikos K.; Samios, Costas K.; Papadopoulou, Christina

doi:10.1002/(sici)1097-4628(19980425)68:4<589::aid-app10>3.0.co;2-n

Cited by 16 publications

(13 citation statements)

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“…The possible reactions between MHDPE and PA‐6(or EVOH) are schematically shown in Figure . It is postulated that HDPE‐g‐PA‐6 and HDPE‐g‐EVOH are formed through reaction between maleic anhydride of MHDPE and functional group of PA‐6 and EVOH molecules . Morphological and rheological results support the chemical reaction between functional group of MHDPE with EVOH and PA‐6.…”

Section: Resultsmentioning

confidence: 82%

Reactive Compatibilization of Ternary Polymer Blends with Core–Shell Type Morphology

Rastin

Saeb

Jafari

et al. 2014

Macro Materials & Eng

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Reactive compatibilization of HDPE based ternary blends with intrinsic tendency to form coreshell microstructure was discussed in view of microstructure-property correlations. A series of binary and ternary blends containing HDPE, PA-6, EVOH, and maleated HDPE were prepared by melt processing and. The rheological, thermal, and mechanical characteristics of the resulting blends were then assessed in terms of transitions in the phase morphologies. The state of stress transfer and the degree of interfacial adhesion were also quantified by tracking changes in the particle size, particle size distribution, and crystallization behavior of the systems having different amounts of compatibilizer.

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Section: Resultsmentioning

confidence: 82%

Reactive Compatibilization of Ternary Polymer Blends with Core–Shell Type Morphology

Rastin

Saeb

Jafari

et al. 2014

Macro Materials & Eng

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“…For PE and EVOH blend, a commonly used compatibilizer family is maleic‐grafted polyolefins. Many studies have been conducted aiming to obtain single layer packaging films based on PE, EVOH, and functionalized compatibilizer with anhydride maleic investigating different compositions of components and process methods to maximize oxygen barrier property …”

Section: Introductionmentioning

confidence: 99%

Investigation of polyethylene‐grafted‐maleic anhydride presence as a compatibilizer on various properties of nanocomposite films based on polyethylene/ethylene vinyl alcohol/ nanoclay

Rahnama

Oromiehie

Ahmadi

et al. 2016

Polymers for Advanced Techs

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High oxygen barrier films were prepared based on low‐density polyethylene (LDPE)/ethylene vinyl alcohol (EVOH)/ nanoclay and polyethylene‐grafted‐maleic anhydride (LDPE‐g‐MA) as a compatibilizer. Box–Behnken statistical experiment design methodology was employed to study the effects of nanoclay, LDPE‐g‐MA, and EVOH presence and their contents on various properties of the final films. The R2 parameter varied between 0.89 and 0.99 for all the obtained responses. The morphology of the samples was evaluated. Results of oxygen transfer rate (OTR) test indicated that the addition of EVOH up to 30 wt% to neat LDPE can decrease oxygen permeability significantly. The addition of nanoclay also decreased the permeability of resulting films but, LDPE‐g‐MA reduced the permeability of the films only at an optimal content. Elastic modulus was increased with the addition of nanoclay, EVOH, and LDPE‐g‐MA to the matrix. An increase in EVOH content in the samples improved the tensile strength. Effect of nanoclay on tensile strength was highly dependent on the presence of a compatibilizer. The addition of compatibilizer to the samples and increasing its content enhanced the tensile strength of the specimens. Incorporation of nanoclay, EVOH, and LDPE‐g‐MA to the LDPE matrix and increasing the amount of these components in the samples led to higher storage modulus, zero shear rate viscosity, and shear thinning exponent, but, lowered the terminal slope and the frequency of intersection point of storage modulus (G′) and loss modulus (G″). The only exception was that EVOH increment resulted in a lower shear thinning exponent. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Elsewhere, Kalfoglou et al demonstrated that the morphology and mechanical properties of high density polyethylene (HDPE)=poly(ethylene -co-vinyl alcohol)(EVOH) binary blends is a repercussion of using SEBS-g-MAH as the CP [17] .…”

Section: Introductionmentioning

confidence: 99%

SEBS-g-MAH as a Reactive Compatibilizer Precursor for PP/PTT/SEBS Ternary Blends: Morphology and Mechanical Properties

Jazani

Ahmad

Jafari

et al. 2013

Polymer-Plastics Technology and Engineering

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This article highlights the effect of using maleic anhydride-assisted SEBS compatibilizer precursor on the morphology and mechanical properties of the polypropylene (PP)/poly (trimethylene terephthalate) (PTT)/poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) 70/15/15 ternary blends. In all ternary blends, the amounts of PP and PTT, respectively as the matrix and the primary minor components were kept constant at 70 and 15 wt%; in turn, the amount of constituent polymers within the secondary minor phase containing reactive maleic anhydride grafted SEBS (SEBS-g-MAH) and nonreactive SEBS was changed. The mentioned compatibilizing system was first melt-blended in a co-rotating twin screw extruder and then added into the blend. Theoretical models were also employed to make a comparison with experimental values obtained from morphology characterization through the ternary systems. Accordingly, it is found that the blend containing only non-reactive SEBS exhibited fine dispersion of core-shell particles; however, by diminishing SEBS to SEBS-g-MAH weight ratio, the morphology changed from the pure core-shell to a multi-phase system consisting of both core-shell and detached particles. Eventually, this transition in the phase morphology caused some consequences and/ or advantages on the mechanical properties, so that the blend consisting of 50/50 weight ratio of SEBS/SEBS-g-MAH exhibited the minimum value of modulus; in contrast, the impact strength of that sample was considerably higher than that of neat PP specimen. These alterations in mechanical properties could be ascribed to the formation of some especial microstructures, in another word, the impact of particle size and particle size distribution, which has been well-established through scanning electron micrographs.

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Compatibilization of poly(ethylene-co-vinyl alcohol) (EVOH) and EVOH-HDPE blends: Structure and properties

Cited by 16 publications

References 0 publications

Reactive Compatibilization of Ternary Polymer Blends with Core–Shell Type Morphology

Reactive Compatibilization of Ternary Polymer Blends with Core–Shell Type Morphology

Investigation of polyethylene‐grafted‐maleic anhydride presence as a compatibilizer on various properties of nanocomposite films based on polyethylene/ethylene vinyl alcohol/ nanoclay

SEBS-g-MAH as a Reactive Compatibilizer Precursor for PP/PTT/SEBS Ternary Blends: Morphology and Mechanical Properties

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