Feedstock recycling of polymer wastes

Garforth, Arthur; Salmiaton, A.; Hernández-Martínez, J.; Akah, Aaron

doi:10.1016/j.cossms.2005.04.003

Cited by 111 publications

(36 citation statements)

References 67 publications

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“…Initially, the materials after their end of life were landfilled (Garfort et al, 2004). But for polymers, this leads to serious environmental concerns as most polymers are not biodegradable.…”

Section: Introductionmentioning

confidence: 99%

Effect of Feeding Strategy on the Mechanical Properties of PP/Recycled EPDM/PP-G-MA Blends

Mahallati

Rodrigue

2014

International Polymer Processing

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In this work, thermoplastic elastomers based on polypropylene (PP) and recycled ethylene-propylene-diene monomer (r-EPDM) blends with polypropylene-graft-maleic anhydride (PP-g-MA) as modifier (0 to 8wt.%) were prepared by melt compounding via twin-screw extrusion followed by injection molding. In particular, the effects of material composition and feeding strategies were studied. The morphological and mechanical properties of the blends were investigated by using scanning electron microscopy (SEM), tensile, flexural, impact, density and hardness tests. The results indicate that good dispersion and compatibility between PP and r-EPDM particles was obtained and that incorporation of r-EPDM leads to significant increase in PP impact strength. Finally, the feeding order of each component in the extruder was found to modify substantially the final morphology of the blend, thus having ad irect influence on their mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Effect of Feeding Strategy on the Mechanical Properties of PP/Recycled EPDM/PP-G-MA Blends

Mahallati

Rodrigue

2014

International Polymer Processing

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“…1 The incineration of polymer waste meets with strong societal opposition 2 and releases greenhouse gases; there is the Kyoto Protocol to consider, and EU countries are moving toward domestic goals of reducing carbon dioxide emissions by between 10% and 20% by 2010. Mechanical recycling (the conversion of "scrap" polymer into new products) is a popular recovery path for manufacturers and is carried out on single-polymer waste streams.…”

Section: Introductionmentioning

confidence: 99%

Recycling extruded polystyrene by dissolution with suitable solvents

Garcı́a

Duque

Lucas

et al. 2009

J Mater Cycles Waste Manag

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The amount of extruded polystyrene (XPS) waste has increased in recent years due to the increase of its use in the thermal insulation of buildings, transport vehicles, and refrigerators, among others. Dissolution with suitable solvents to achieve a volume reduction of more than 100 times without degradation of polymer chains is one of the cheapest and most effi cient methods of recycling XPS. Several environmentally friendly solvents have been tested as dissolution agents for XPS volume reduction; the action of these solvents does not produce any degradation of polymer chains. The solubility of the polymer in such solvents at different temperatures was investigated. The solvent can be easily recycled by distillation, obtaining a high-quality recycled polymer.

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“…can be used to reduce landfill volumes, but does not reduce the demand for fossil fuels (as the waste plastic was made from petrochemicals; Garforth et al 2004). There are also environmental and health concerns associated with their emissions.…”

Section: Ecological Case For Recyclingmentioning

confidence: 99%

Plastics recycling: challenges and opportunities

Hopewell¹,

Dvorak²,

Kosior³

2009

Phil. Trans. R. Soc. B

2,053

1,217

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Plastics are inexpensive, lightweight and durable materials, which can readily be moulded into a variety of products that find use in a wide range of applications. As a consequence, the production of plastics has increased markedly over the last 60 years. However, current levels of their usage and disposal generate several environmental problems. Around 4 per cent of world oil and gas production, a non-renewable resource, is used as feedstock for plastics and a further 3 -4% is expended to provide energy for their manufacture. A major portion of plastic produced each year is used to make disposable items of packaging or other short-lived products that are discarded within a year of manufacture. These two observations alone indicate that our current use of plastics is not sustainable. In addition, because of the durability of the polymers involved, substantial quantities of discarded end-of-life plastics are accumulating as debris in landfills and in natural habitats worldwide.Recycling is one of the most important actions currently available to reduce these impacts and represents one of the most dynamic areas in the plastics industry today. Recycling provides opportunities to reduce oil usage, carbon dioxide emissions and the quantities of waste requiring disposal. Here, we briefly set recycling into context against other waste-reduction strategies, namely reduction in material use through downgauging or product reuse, the use of alternative biodegradable materials and energy recovery as fuel.While plastics have been recycled since the 1970s, the quantities that are recycled vary geographically, according to plastic type and application. Recycling of packaging materials has seen rapid expansion over the last decades in a number of countries. Advances in technologies and systems for the collection, sorting and reprocessing of recyclable plastics are creating new opportunities for recycling, and with the combined actions of the public, industry and governments it may be possible to divert the majority of plastic waste from landfills to recycling over the next decades.

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Feedstock recycling of polymer wastes

Cited by 111 publications

References 67 publications

Effect of Feeding Strategy on the Mechanical Properties of PP/Recycled EPDM/PP-G-MA Blends

Effect of Feeding Strategy on the Mechanical Properties of PP/Recycled EPDM/PP-G-MA Blends

Recycling extruded polystyrene by dissolution with suitable solvents

Plastics recycling: challenges and opportunities

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