Preparation and characterization of cassava-based polypropylene (PP) and polybutylene succinate (PBS) biocomposites | การเตรียมและสมบัติเชิงกลของวัสดุเชิงประกอบของพอลิพอพิลีนและพอลิบิวทิลีนซัคซิเนตกับกากมันสำปะหลัง
2009
Rattana Tantatherdtam(Kasetsart University, Bangkok (Thailand). Kasetsart Agricultural and Agro-Industrial Product Improvement Institute) | Tran, T.(National Science and Technology Development Agency, Bangkok (Thailand). National Center for Genetic Engineering and Biotechnology. Cassava and Starch Technology Research Unit) | Sunee Chotineeranat(National Science and Technology Development Agency, Bangkok (Thailand). National Center for Genetic Engineering and Biotechnology. Cassava and Starch Technology Research Unit) | Se-na Lee(Seoul National University, Seoul (South Korea). Laboratory of Adhesion and Bio-Composites) | Klanarong Sriroth(Kasetsart University, Bangkok (Thailand). Kasetsart Agricultural and Agro-Industrial Product Improvement Institute) | Hyun-Joong Kim(Seoul National University, Seoul (South Korea). Laboratory of Adhesion and Bio-Composites)
Cassava root fiber was used as a bio-reinforcement in polymer composite. Biocomposite of PP and PBS with cassava root fiber was prepared on a twin-screw extrusion. The maleic anhydridepolypropylene (MAPP) compatibilizer was used to improve interfacial strength between fiber and polymer matrix. The effects of untreated fiber content and compatibilizer on the mechanical properties of composite were investigated. It was observed that with an increase in fiber loading, the Young's modulus and flexural modulus increased, indicating higher stiffness in fiber filled composites, whereas the tensile strength and flexural strength decreased. The addition of MAPP compatibilizer in PP composite with 50 percent fibers improved the flexural strength to higher level than pure PP, therefore giving rise to a stronger but less flexible material. Scanning electron microscopic studies revealed better interfacial adhesion between fiber and polymer matrix in composite containing MAPP compatibilizer. Thermogravimetric analysis showed that the thermal stability and degradation temperature of PP composites increased with the presence of MAPP, suggesting the enhanced interfacial interaction and compatibility due to the treatment of compatibilizer.
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