The Use of Ethylene/Propylene Copolymers as Compatibilizers for Recycled Polyolefin Blends

Radonjič, Gregor; Gubeljak, Nenad

doi:10.1002/1439-2054(20020201)287:2<122::aid-mame122>3.0.co;2-a

Cited by 34 publications

(33 citation statements)

References 17 publications

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“…An analysis of the stress–strain curves in tensile tests indicates that all samples broke at the yield point before exhibiting any cold drawing, even for the matrix without wood. This behavior was also reported in the literature for blends of virgin PE and PP [9].…”

Section: Resultssupporting

confidence: 85%

“…Compatibilization is therefore achieved through physical compatibility of the blocks with each phase leading to increased interfacial adhesion between the components. Some of the most frequently used compatibilizers for PE/PP blends include: styrenic block copolymers [5], ethylene‐propylene elastomers including ethylene‐propylene copolymer [6–9] and ethylene–propylene–diene copolymer [10–12], ethylene‐vinyl acetate [5, 13], and ethylene–octene copolymers (EOC) [14, 15].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and morphological properties of wood plastic composites based on municipal plastic waste

2013

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Production and characterization of wood plastic composites (WPC) from the light fraction of municipal plastic wastes (post-consumer) and wood processing residues (sawdust) were investigated. Composition analysis revealed the presence of polyethylene (PE) and polypropylene (PP) as the two main components of the matrix. In order to improve compatibility and adhesion between all the phases, an ethylene-octene copolymer was used to compatibilize the polymer phases and was also acting as an impact modifier, while the addition of maleated polyethylene and maleated polypropylene (MAPP) were acting as coupling agents between the polymer matrix and the wood flour. The combined effect of all the components was found to produce composites with interesting morphological (dispersion and adhesion) and mechanical properties (tension, torsion, flexion, and impact) after optimization of the additive package (blend of coupling agents). POLYM. COMPOS., 34:487-493, 2013. ª

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Mechanical and morphological properties of wood plastic composites based on municipal plastic waste

2013

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“…In general, elastomers used as compatibilizer for polyolefin PE-rich blends have a high content of ethylene monomer. 6 The domain size of virgin PP, the dispersed component, was larger for those rPE/vPP blends with rPE/vPP ratio = 5.7, indicating a decrease in the compatibility by increasing content of virgin PP in the blend. This may be partly due to the self-association, which is more favorable than hetero-association when the content of virgin heterophasic PP copolymer is higher than 4.9 wt.%.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, compatibilizers are added during the reprocessing of rPE-PP blends, the most common are elastomeric block and random copolymers and terpolymers, such as ethylenepropylene and ethylene-propylene-diene elastomers. 5,6 Graft copolymers has also been used as compatibilizers of rPE-PP blends. For example, by addition of PE-g-(2-methyl-1,3-butadiene) to blends composed of 90 wt.% of rPE and 10 wt.% of recycled PP, a common composition of post-consumer plastic waste, the elongation at break and Charpy impact strength were improved.…”

Section: Introductionmentioning

confidence: 99%

Effect of Virgin Heterophasic Pp Copolymer Content on Moisture Absorption, Thermal and Mechanical Properties of Recycled Polyethylene Wood Flour Composites

Arango¹,

Rodríguez-Llamazares²,

Castaño³

et al. 2014

J. Chil. Chem. Soc.

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The effect of virgin heterophasic PP copolymer (vPP) content on moisture absorption, as well as on thermal and mechanical properties of recycled polyethylene/ wood flour composites was investigated. The polymer matrix of recycled post-consumed plastic waste (rPE) was composed of a matrix of LDPE and a part of PP. Wood flour of Pinus radiata was used as filler at a constant loading of 45 wt.%. rPE/vPP blends and their composites were manufactured by melt blending, and then by injection molding. The morphology of the blends and composites was analyzed by means of scanning electron microscopy. The addition of vPP improved tensile and flexural moduli and flexural strength of wood plastic composites (WPC). The highest increase of these properties was observed for a WPC sample with a rPE/vPP ratio of 19. WPC made with higher virgin PP content (rPE/vPP ratio = 9 and 5.7) showed lower increase of mechanical properties compared to polymer matrix and WrPE samples. The moisture uptake of WPC made of rPE/vPP blend was higher than those of rPE, and their mechanical properties were more adversely affected by immersion in water. TGA results indicate that rPE are thermally more stable than rPE/vPP blends. The incorporation of heterophasic PP copolymer into the recycled polymer matrix of WPC delays the starting of wood flour degradation.

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“…Polypropylene (PP)/elastomer blends5–8 have been extensively studied with the objective of improving their recycling with compatibilizers but the effect of pollutants has not been studied and there are only a very few publications in this field 9. Although it can be assumed that some pollutants are detrimental for the properties of recycled materials, others, such as oils, may be expected to improve some mechanical properties (Charpy impact for example) 10…”

Section: Introductionmentioning

confidence: 99%

Influence of an ethylene‐octene copolymer and of pollutants in PP/EPR blends

Mnif¹,

Massardier-Nageotte²,

Jaziri³

2007

J of Applied Polymer Sci

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The objective of this work was to study the effectiveness of commercial compatibilizers (E-EA-MAH copolymer) on the morphology of blends of polypropylene/ ethylene polypropylene rubber (PP/EPR) (78/22) and metallocenic ethylene-octene copolymer (EOC) polluted by (poly (vinyl chloride) (PVC) and by an oil for engine. Blends of various compositions (with and without compatibilizer or pollutant), were prepared using a corotating twin-screw extruder. In both cases, the analyses of blend morphologies highlighted the poor adherence between the two phases in the uncompatibilized blends. Compatibilized polluted blends display better adherence between phases. Dynamic mechanical thermal analysis and differential scanning calorimetry show that the compatibilizer improves the adhesion between both phases and enables stress transfer at the interface.

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The Use of Ethylene/Propylene Copolymers as Compatibilizers for Recycled Polyolefin Blends

Cited by 34 publications

References 17 publications

Mechanical and morphological properties of wood plastic composites based on municipal plastic waste

Mechanical and morphological properties of wood plastic composites based on municipal plastic waste

Effect of Virgin Heterophasic Pp Copolymer Content on Moisture Absorption, Thermal and Mechanical Properties of Recycled Polyethylene Wood Flour Composites

Influence of an ethylene‐octene copolymer and of pollutants in PP/EPR blends

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