| Title | Diverted from Landfill: Reuse of Single-Use Plastic Packaging Waste |
|---|---|
| ID_Doc | 13555 |
| Authors | O'Rourke, K; Wurzer, C; Murray, J; Doyle, A; Doyle, K; Griffin, C; Christensen, B; Brádaigh, CMO; Ray, D |
| Title | Diverted from Landfill: Reuse of Single-Use Plastic Packaging Waste |
| Year | 2022 |
| Published | Polymers, 14, 24 |
| Abstract | Low-density polyethylene (LDPE) based packaging films mostly end up in landfill after single-use as they are not commonly recycled due to their flexible nature, low strength and low cost. Additionally, the necessity to separate and sort different plastic waste streams is the most costly step in plastics recycling, and is a major barrier to increasing recycling rates. This cost can be reduced through using waste mixed plastics (wMP) as a raw material. This research investigates the properties of PE-based wMP coming from film packaging wastes that constitutes different grades of PE with traces of polypropylene (PP). Their properties are compared with segregated individual recycled polyolefins and virgin LDPE. The plastic plaques are produced directly from the wMP shreds as well as after extruding the wMP shreds into a more uniform material. The effect of different material forms and processing conditions on the mechanical properties are investigated. The results of the investigation show that measured properties of the wMP fall well within the range of properties of various grades of virgin polyethylene, indicating the maximum possible variations between different batches. Addition of an intermediate processing step of extrusion before compression moulding is found to have no effect on the tensile properties but results in a noticeably different failure behaviour. The wMP does not show any thermal degradation during processing that was confirmed by thermogravimetric analysis. The results give a scientific insight into the adoption of wMP in real world products that can divert them from landfill creating a more circular economy. |
| https://www.mdpi.com/2073-4360/14/24/5485/pdf?version=1671078371 |
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