How Ball Milling Affects Plastic Recycling
Author Information
Author(s): Adrian H. Hergesell, Claire L. Seitzinger, Justin Burg, Renate J. Baarslag, Ina Vollmer
Primary Institution: Utrecht University
Hypothesis
The study investigates how different ball milling parameters influence the mechano-chemical conversion of polyolefins into small hydrocarbons.
Conclusion
Using heavier grinding spheres and higher milling frequencies significantly increases the yield of small hydrocarbons from polypropylene.
Supporting Evidence
- Heavier spheres produce more propene due to higher impact forces.
- Higher milling frequencies lead to increased hydrocarbon yields.
- Low plastic filling degrees enhance direct contact and chain cleavage.
Takeaway
This study shows that using heavy balls and shaking them fast helps break down plastic into useful chemicals better than other methods.
Methodology
The study used a Retsch shaker mill to depolymerize polypropylene and polyethylene by varying milling parameters such as sphere material, frequency, filling degree, and temperature.
Limitations
The study's findings may not be directly applicable to industrial settings due to the specific conditions used in the experiments.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website