Recycling extruded polystyrene by dissolution with suitable solvents |
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Authors: | Maria Teresa García Gema Duque Ignacio Gracia Antonio de Lucas Juan F Rodríguez |
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Institution: | (1) ITQUIMA, University of Castilla-La Mancha, Campus Universitario, 13304 Ciudad Real, Spain |
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Abstract: | 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 efficient
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.
Chemical Feedstock Recycling & Other Innovative Recycling Techniques 6 |
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Keywords: | Polystyrene Recycling Solubility parameters |
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