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Influence of Sugarcane Bagasse Fiber Size on Biodegradable Composites of Thermoplastic Starch

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Although thermoplastic starch (TPS) is biodegradable, its low mechanical resistance limits its wide application. Sugarcane bagasse (SB) fibers can be used as reinforcement in TPS matrix composites, but the influence of fiber size on the properties of the composite is still unknown. In this study, TPS composites reinforced with SB short fibers of four sizes were processed and characterized in order to analyze the influence of fiber size on the mechanical properties of the TPS/SB composite. It was observed that the interaction between fiber and matrix was good and optimized when the fibers are sifted in sieves between 30 and 50 mesh, obtaining fibers with average length of 1569 ± 640 μm and average diameter of 646 ± 166 μm. For these composites, increases of more than 660% in the modulus and more than 100% in the maximum tension were verified when compared to the pure TPS.
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Keywords: COMPOSITE; FIBER SIZE; SUGARCANE BAGASSE; THERMOPLASTIC STARCH

Document Type: Research Article

Publication date: 01 March 2018

This article was made available online on 29 January 2018 as a Fast Track article with title: "Influence of Sugarcane Bagasse Fiber Size on Biodegradable Composites of Thermoplastic Starch".

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  • The Journal of Renewable Materials (JRM) publishes high quality peer reviewed original research on macromolecules and additives obtained from renewable/biobased resources. Utilizing a multidisciplinary approach, JRM introduces cutting-edge research on biobased monomers, polymers, additives (both organic and inorganic), their blends and composites. It showcases both fundamental aspects and new applications for renewable materials. The fundamental theories and topics pertain to chemistry of biobased monomers, macromoners and polymers, their structure-property relationship, processing using sustainable methods, characterization (spectroscopic, morphological, thermal, mechanical, and rheological), bio and environmental degradation, and life cycle analysis. Demonstration of use of renewable materials and composites in applications including adhesives, bio and environmentally degradable structures, biomedicine, construction, electrical & electronics, mechanical, mendable and self-healing systems, optics, packaging, recycling, shape-memory, and stimulus responsive systems will be presented.
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