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Recycling polypropylene and polyethylene wastes in production of polyester based polymer mortars
Highlights Polymer mortars with waste polymers were produced. Improvements of 82% on the flexural deformation were obtained with waste polypropylene. Improvements of 30% on the compressive deformation were obtained with waste polyethylene. Improvements of 27% on the compressive strength were obtained with waste polypropylene. Structural modifications on waste particles were related to mechanical strength.
Abstract Although polymers were originally seen as an option to replace other materials due to their physicochemical properties and low cost, they have become an environmental problem due to poor final disposal practices. For these reasons, in the presented investigation, impact of waste polypropylene (wPP) from bottle caps and waste polyethylene (wPE) from bottles, on mechanical characteristics of polymer mortars were observed. Mortars were produced with unsaturated polyester resin at 20% ratio and silica sand at 80% ratio. Sand was replaced with the wastes at three different ratios as 1, 2 and 3 wt% and sizes as 0.71, 1.4 and 2.38 mm. Observations exhibited improvement about 27% for compressive strength when adding wPP particles; 30% on the compressive deformation (adding wPE) as well as 82% on the flexural deflection (adding wPP). Nevertheless, flexural strength and the elasticity modulus of polymer mortars decline by depending on the increment in content and sizes of the wastes used. That is highly connected to morphologies observed by SEM of the fractures polymer mortars.
Recycling polypropylene and polyethylene wastes in production of polyester based polymer mortars
Highlights Polymer mortars with waste polymers were produced. Improvements of 82% on the flexural deformation were obtained with waste polypropylene. Improvements of 30% on the compressive deformation were obtained with waste polyethylene. Improvements of 27% on the compressive strength were obtained with waste polypropylene. Structural modifications on waste particles were related to mechanical strength.
Abstract Although polymers were originally seen as an option to replace other materials due to their physicochemical properties and low cost, they have become an environmental problem due to poor final disposal practices. For these reasons, in the presented investigation, impact of waste polypropylene (wPP) from bottle caps and waste polyethylene (wPE) from bottles, on mechanical characteristics of polymer mortars were observed. Mortars were produced with unsaturated polyester resin at 20% ratio and silica sand at 80% ratio. Sand was replaced with the wastes at three different ratios as 1, 2 and 3 wt% and sizes as 0.71, 1.4 and 2.38 mm. Observations exhibited improvement about 27% for compressive strength when adding wPP particles; 30% on the compressive deformation (adding wPE) as well as 82% on the flexural deflection (adding wPP). Nevertheless, flexural strength and the elasticity modulus of polymer mortars decline by depending on the increment in content and sizes of the wastes used. That is highly connected to morphologies observed by SEM of the fractures polymer mortars.
Recycling polypropylene and polyethylene wastes in production of polyester based polymer mortars
Martínez-López, Miguel (author) / Martínez-Barrera, Gonzalo (author) / Salgado-Delgado, René (author) / Gencel, Osman (author)
2020-10-25
Article (Journal)
Electronic Resource
English
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