Using Ground Buckwheat Hulls to Improve Biocomposite Properties
Author Information
Author(s): Grzegorz Janowski, Marta Wójcik, Wiesław Frącz, Łukasz Bąk, Grażyna Ryzińska
Primary Institution: Rzeszow University of Technology
Hypothesis
The addition of ground buckwheat hulls (GBHs) to poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) will enhance its mechanical and functional properties.
Conclusion
The study found that incorporating GBHs into PHBV biocomposites improves dimensional stability and water absorption while stabilizing mechanical properties after multiple recycling cycles.
Supporting Evidence
- The addition of GBHs reduced material shrinkage and improved dimensional stability.
- Water absorption increased significantly in the biocomposite compared to pure PHBV.
- Mechanical properties initially decreased with recycling but stabilized after multiple cycles.
- Hardness of the biocomposite increased with each recycling cycle.
- Microstructural analysis showed better embedding of GBH particles in the polymer matrix after recycling.
Takeaway
This study shows that adding ground buckwheat hulls to a type of bioplastic makes it stronger and better at holding water, even after being recycled several times.
Methodology
The study involved mixing PHBV with GBHs, extruding the mixture, and then testing the resulting biocomposite for various mechanical and functional properties after multiple recycling cycles.
Limitations
The study does not specify the long-term environmental impact of using GBHs or the economic feasibility of large-scale production.
Digital Object Identifier (DOI)
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