The impact of impurities on the mechanical properties of recycled polyethylene
| Autor: | S.S.M. Chu, E.U. Thoden van Velzen, Karin Molenveld, M.T. Brouwer, Fresia Alvarado Chacon |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
business.product_category Materials science mechanical properties Raw material 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology Impurity BBP Sustainable Chemistry & Technology Bottle General Materials Science Composite material Analysis method 030109 nutrition & dietetics mechanical recycling post-consumer plastic waste Mechanical Engineering 04 agricultural and veterinary sciences General Chemistry Polyethylene 040401 food science Impact resistance chemistry polyethylene bottles polymeric composition High-density polyethylene Elongation business |
| Zdroj: | Packaging Technology and Science 34 (2021) 4 Packaging Technology and Science, 34(4), 219-228 |
| ISSN: | 1099-1522 0894-3214 |
| DOI: | 10.1002/pts.2551 |
| Popis: | The mechanical properties of mechanically recycled polyethylene (rPE) were studiedin relation to the composition of the feedstock. This composition varied in six stepsfrom only bottle bodies from a single type of high-density polyethylene (HDPE) tothe complete composition of an industrially sorted polyethylene (PE) product,including other packaging components, other PE-based packages, sorting faults andresidual waste. The rPE with the highest impact resistance was made from the single-grade bottle bodies. The addition of bodies made from other types of PE alreadyreduced the impact resistance with 11%. All the other stepwise additions ofpackaging components and faultily sorted objects caused the impact resistance todecrease further. Conversely, the elongation at break grew with the stepwiseaddition of these packaging components and faultily sorted objects. From the usedmethods, the best analysis method to accurately determine the polymericcomposition of the rPE was found to be near-infrared-assisted flake analysis. Thismethod can not only be used to determine the polymeric composition, but due to thestrong correlation with the impact resistance, it is also a valuable indicator for theexpected mechanical properties of rPE. |
| Databáze: | OpenAIRE |
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