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Bio-based polymeric composites comprising wood flour as filler
Elizabeth Grillo Fernandes1, Matteo Pietrini, Emo Chiellini
1Department of Chemistry & Industrial Chemistry, University of Pisa, v. Risorgimento 35, 56126 Pisa, Italy.
Biomacromolecules
|July 13, 2004
Summary
Researchers developed eco-friendly beech wood flour composites using poly(3-hydroxybutyrate) (PHB) and plasticizers. Tri(ethylene glycol) bis(2-ethylhexanoate) (TEGB) plasticizer enhanced composite stability for disposable items.
Area of Science:
- Materials Science
- Polymer Science
- Green Chemistry
Background:
- Growing demand for sustainable industrial development necessitates bio-based materials.
- Agro-industrial byproducts offer potential for eco-compatible material formulation.
- Biodegradable polymers are key to reducing environmental impact.
Purpose of the Study:
- To assess agro-industrial byproducts for eco-compatible bio-based polymers.
- To formulate and investigate beech wood flour (Bwf) composites with poly(3-hydroxybutyrate) (PHB).
- To evaluate the effect of different plasticizers and their concentrations on composite properties.
Main Methods:
- Factorial design was employed to study plasticizer type (TEGB, PEG200) and concentration (5, 20 wt %).
- Composites were prepared using 90 wt % PHB and Bwf.
- Thermal and mechanical properties, including decomposition temperature (T(d)) and molecular weight (M(w)), were analyzed.
Main Results:
- Poly(ethylene glycol) (PEG200) incorporation reduced PHB's thermal stability and molecular weight.
- Tri(ethylene glycol) bis(2-ethylhexanoate) (TEGB) showed promise in maintaining composite integrity.
- The study identified optimal conditions for TEGB/PHB/Bwf composites.
Conclusions:
- TEGB/PHB/Bwf composites demonstrate potential for developing new materials.
- Optimized composites are suitable for disposable item applications.
- This research contributes to sustainable material development using renewable resources.