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POLYMERIC COMPOSITES FILAMENTS FOR 3D PRINTER BASED ON POLY-HYDROXYBUTYRATE/BACTERIAL CELLULOSE FOR TISSUE ENGINEERING APPLICATIONS.
Currently have been growing the interest in biopolymersto produce biomaterials using 3D printing, since they are biodegradable, biocompatible and non-toxic. Among all natural polymers, poly-hydroxybutyrate (PHB), which is a polymer produced from bacteria Alcaligeneseutrophus, it is a renewable, linear, semi-crystalline and belonging to the class of polyhydroxyalkanoates. The main disadvantage of this biopolymer is excessive cost of production and some deficiencies in its properties, such as low mechanical resistance and thermal instability
Objetivos - Metodologia - Resultados - Discussão dos Resultados/Objectives - Methodology - Results - Discussion of Results/Objetivos - Metodología - Resultados - Discusión de los resultados
In this work, the polymers composite filaments based on PHB and bacterial cellulose (BC) were prepared using a single-screw homemade extruder.BC wastesfrom the dressing industry were used as a sustainable and low-cost alternative. Scanning electron microscopy (SEM) showed good compatibility between the materials. Thermal properties were evaluated by thermogravimetric and differential scanning calorimetry analysis. The dynamic mechanical analysis was used to determinate of the mechanical properties of the compositefilaments. PHB/BC composites filaments were used to printed 3D scaffolds with excellent quality.
Considerações Finais/Final considerations/Consideraciones finales
Our results demonstrated that the new filaments prepared are attractive candidates for use in 3D printing for tissue engineering applications.
Palavras-chave/Key words/Palabras clave
Polymeric composites filaments, 3d printer, poly-hydroxybutyrate, bacterial cellulose, tissue engineering.
HERNANE DA SILVA BARUD, Igor T. S. Batista, Henrique da Silva Barud Finoccio