Olefin–maleic-anhydride copolymer based additives: A novel approach for compatibilizing blends of waste polyethylene and crumb rubber

Tóth, Balázs; Varga, Csilla; Bartha, L.

doi:10.1016/j.wasman.2015.01.004

Cited by 13 publications

(8 citation statements)

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“…The ratio of the functional groups were estimated with an FT‐IR method developed formerly. [ 25,26 ] Analytical properties of the two experimental additives were summarized in the Table 2.…”

Section: Resultsmentioning

confidence: 99%

Valorization of waste polyethylene by blending with ethylene‐vinylacetate and incorporating a new type of compatibilizer

Simon-Stőger

Varga

2020

Vinyl Additive Technology

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Nowadays polyethylene is one of the polymers produced in the greatest volume and the amount of generated waste high‐density polyethylene (w‐HDPE) is significant as well. Valorization and recycling of w‐HDPE can be realized by blending with different types of polymers and/or elastomers for example, ethylene‐vinyl acetate (EVA). For the purpose of boosting of interfacial interactions between these two polymers experimental olefin‐maleic‐anhydride based additives have been incorporated into the blends after optimization of the processing temperature. Impact and tensile tests have been carried out in our research work besides microscopy measurements and investigation of the effects of additive structure by FT‐IR and rheology. At higher processing temperature (220°C) both tensile properties and Charpy impact strength were increased, latter one improved by 245% measured at 5°C while elongation at break enhanced by 182% with incorporation of some experimental additives compared to the neat 70/30 w‐HDPE/EVA. Changes in the hydrocarbon molecular chains of experimentally compatibilized blends were observed based on FT‐IR results and rheological measurements. It can be concluded that one of the most basic notions of sustainability, the 4R's (reduce, recycle, reuse, recover) has been satisfied in a successful way.

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Section: Resultsmentioning

confidence: 99%

Valorization of waste polyethylene by blending with ethylene‐vinylacetate and incorporating a new type of compatibilizer

Simon-Stőger

Varga

2020

Vinyl Additive Technology

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“…Several types of compatibilizing additives, like maleic-anhydride grafted polyolefins are commercially available and widely used in scientific research. Our experimental work focused on the effects of different kinds of compatibilizers, especially on experimental olefin-maleic-anhydride copolymer based ones ( Figure 2) synthesized at our Department [28]. Functional groups meant one of the main differences comparing the two families of compatibilizers applied.…”

Section: Experimental 21 Materialsmentioning

confidence: 99%

A journey into recycling of waste elastomers via a novel type of compatibilizing additives

Simon-Stoeger¹,

Varga²,

Greczula³

et al. 2019

Express Polym. Lett.

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Nowadays successful recycling of rubber waste has been one of the greatest challenges in waste management. Difficulties in mechanical recycling are especially caused by the variability of raw materials, therefore, a processing simply combining them usually results in end-products with poor mechanical stability. Drawbacks of mechanical recycling of mixed plastics and blends of plastics and rubbers can be overcome by application of compatibilizing additives. Taking the commercial types into account only a few general kinds are available and their effectiveness is hindered by the structure as it cannot be fitted to the chemical structures of plastics processed together. Our study has been addressed to give a comprehensive outlook into a rubber recycling process and successful application of compatibilizing strategies for improving mechanical performance of waste elastomer containing polypropylene. Investigations have been carried out on effective elastomer concentrations, meanwhile on elastomer ratios of various types to each other and on proper structures of compatibilizers. Various mechanical properties could be improved even by 44% due to experimental additives compared to uncompatibilized blends. Mechanical test results have been confirmed by SEM, rheology and FT-IR, to name some of them.

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“…The effectiveness of PP-g-MA was previously demonstrated in blends of PS/PP [21], PP/PET [22], HDPE/PP [23] and PA12/PP [24]. Tóth et al [25] reported positive effects of maleic-anhydride grafted polyolefins (PO-g-MA) on tensile and impact properties of PE/crumb rubber system. HDPE-g-MA improved the mechanical properties of HDPE/chitosan composites in the research of Quiroz-Castillo et al [26].…”

Section: Introductionmentioning

confidence: 96%

Investigation of compatibilization effects of SEBS-g-MA on polystyrene/polyethylene blend with a novel separation method in melted state

Dobrovszky

Ronkay

2016

Polym. Bull.

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Abstract:Preparing polymer blends is an effective way to tailor the good properties of plastics but the most commonly used polymers are incompatible with each other. Therefore, to reduce the interfacial tension and to achieve finer and stable morphology, a suitable copolymer or compatibilizer has to be added to blends in order to establish new interactions between the phases. However, it is difficult to determine the required amount of compatibilizers in polymer blends. As an outcome of the present research a novel separation method was developed, where the blends are investigated in melted state, utilising centrifugal force to determine the adequacy of compatibilizers. The effectiveness of styrene/ethylene/butylene/styrene block copolymer grafted with maleic anhydride (SEBS-g-MA) was verified by blending two immiscible plastics: polystyrene (PS) and high density polyethylene (HDPE). FTIR measurements were carried out to support the results of optical microscopy regarding the purity of separation. Comparing the results of morphology, rheology and mechanical properties with the novel separation method, it seems that investigation of compatibilization effect in a melted state would be suitable for predicting the adequacy of compatibilizer in blend. The minimum required amount of compatibilizer was also detectable, wherein the stress-strain curves begins to change significantly and the impact properties starting to improve in PS/HDPE blends.Keywords: compatibilization; polymer separation; polymer blend; centrifugal force; polymers in melted state.Acknowledgements: This research was realized in the framework of TÁMOP 4.2.4. A/1-11-1-2012-0001 "National Excellence Program -Elaborating and operating an inland student and researcher personal support system".

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Olefin–maleic-anhydride copolymer based additives: A novel approach for compatibilizing blends of waste polyethylene and crumb rubber

Cited by 13 publications

References 13 publications

Valorization of waste polyethylene by blending with ethylene‐vinylacetate and incorporating a new type of compatibilizer

Valorization of waste polyethylene by blending with ethylene‐vinylacetate and incorporating a new type of compatibilizer

A journey into recycling of waste elastomers via a novel type of compatibilizing additives

Investigation of compatibilization effects of SEBS-g-MA on polystyrene/polyethylene blend with a novel separation method in melted state

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