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Biomass-Based Foam from Crosslinked Tapioca Starch/ Polybutylene Succinate Blend

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Biomass-based foam was prepared from tapioca starch crosslinked with glyoxal and polybutylene succinate (PBS) by hot press molding. Temperatures of the mold were 160 °C on the upper plate and 165 °C on the lower plate at 80–100 kgf/cm2 for 2 minutes and 15 seconds. Glyoxal was used as tapioca starch crosslinking agent at 0.0269% weight. The effect of PBS content (5–30 wt%) on the morphology, density, mechanical properties and water absorption of crosslinked starch/PBS blend foams were studied. It was found that crosslinking increased density and flexural strength but reduced water absorption and flexural strain of starch foams. Separation of PBS phase is found as small droplets in the foam microstructure. Higher PBS content in biomassbased foam improves the flexural stress and reduces water absorption of the blend.
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Keywords: CROSSLINKED FOAM; GLYOXAL; POLYBUTYLENE SUCCINATE; STARCH FOAM; TAPIOCA STARCH

Document Type: Research Article

Publication date: 01 June 2016

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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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