Original scientific paper
https://doi.org/10.15255/CABEQ.2014.2259
High Performance Compostable Biocomposites Based on Bacterial Polyesters Suitable For Injection Molding and Blow Extrusion
L. Pérez Amaro
; a)Laboratory of Bioactive Polymeric Materials for Biomedical & Environmental Applications (BioLab), Department of Chemistry & Industrial Chemistry – University of Pisa – Italy;b)National Interuniversity Consortium of Materials Science and Technology – INS
H. Chen
; Laboratory of Bioactive Polymeric Materials for Biomedical & Environmental Applications (BioLab), Department of Chemistry & Industrial Chemistry – University of Pisa – Italy
A. Barghini
; a)Laboratory of Bioactive Polymeric Materials for Biomedical & Environmental Applications (BioLab), Department of Chemistry & Industrial Chemistry – University of Pisa – Italy;b)National Interuniversity Consortium of Materials Science and Technology – INS
A. Corti
; Laboratory of Bioactive Polymeric Materials for Biomedical & Environmental Applications (BioLab), Department of Chemistry & Industrial Chemistry – University of Pisa – Italy
E. Chiellini
; a)Laboratory of Bioactive Polymeric Materials for Biomedical & Environmental Applications (BioLab), Department of Chemistry & Industrial Chemistry – University of Pisa – Italy;b)
Abstract
This work deals with the design, preparation and characterization of composites based on Poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyvalerate] and lignocellulosic filler suitable for the production of compostable and biodegradable biocomposites that mimic the thermo-mechanical and processing characteristics commonly found in those polymeric materials specially designed for injection molding and blow extrusion. The best formulation in terms of processability, thermo-mechanical properties and biodegradation behavior under mature compost conditions was the biocomposite that contained 42.8 % by wt. of Poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyvalerate] as the major component, 5 % by wt. of lignocellulosic filler, 10 % by wt. of tributyl citrate plasticizer, 30 % by wt. of Poly(butylene adipate-co-terephthalate), 10 % by wt. of Poly(vinyl acetate), 0.2 % by wt. of Joncryl ADR-4368C a chain extender, 1 % by wt. of a primary antioxidant mix, and 1 % by wt. of nucleating agents.
Keywords
biocomposites; Poly(hydroxyalkanoate) (PHAs); processing; injection molding; biodegradation; chain extenders
Hrčak ID:
141916
URI
Publication date:
18.7.2015.
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