Improving Poly(3-hydroxybutyrate) with Polyurethane and Cellulose
Author Information
Author(s): Frone Adriana Nicoleta, Panaitescu Denis Mihaela, Gabor Augusta Raluca, Nicolae Cristian-Andi, Ghiurea Marius, Bradu Corina
Primary Institution: National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, Bucharest, Romania
Hypothesis
Can blending poly(3-hydroxybutyrate) with polyurethane and microfibrillated cellulose improve its properties?
Conclusion
The addition of polyurethane and microfibrillated cellulose enhances the thermal stability and processability of poly(3-hydroxybutyrate) while delaying its degradation.
Supporting Evidence
- Blending poly(3-hydroxybutyrate) with polyurethane improved its thermal stability by up to 13 °C.
- The addition of microfibrillated cellulose enhanced the melt processability of the composites.
- Hydrolytic degradation tests showed that the composites had significantly lower mass loss compared to neat poly(3-hydroxybutyrate).
- The study demonstrated that the PU modifier delayed the degradation of the composites.
Takeaway
This study shows that mixing a biodegradable plastic with other materials can make it stronger and last longer, which is good for making things like medical supplies.
Methodology
The study involved blending poly(3-hydroxybutyrate) with polyurethane and microfibrillated cellulose using two different methods and testing their thermal and mechanical properties.
Limitations
The study primarily focuses on hydrolytic degradation in alkaline conditions, which may not fully represent real-world degradation scenarios.
Digital Object Identifier (DOI)
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