In recent years, the utility of biodegradable polymers has received much attention due to their potential impact upon the complex issue of plastics waste management. Aliphatic polyesters are one of the most promising structural materials for biodegradable or compostable fibers, films, sheets, bottle...
In recent years, the utility of biodegradable polymers has received much attention due to their potential impact upon the complex issue of plastics waste management. Aliphatic polyesters are one of the most promising structural materials for biodegradable or compostable fibers, films, sheets, bottles, injection-molded products, and foamed sheet. poly(butylene adipate-co-terephthalate)(PBAT) is one of the promising materials for the production of environmentally friendly biodegradable polymers. PBAT is one of the typical biodegradable polymers with synthesized using polycondensation of 1,4-butanediol with adipic acid and terephthalic acid. Some applications of PBAT products include packaging films for wrapping of food, office supplies, and clothing, commodity bags, industrial trays and agricultural mulch films for covering of the soil surface in vegetable fields to protect against insects, control growing weeds, and maintain suitable environmental conditions for better growth and effective production of vegetables. Sometimes, the mechanical properties of PBAT such as softness and flexibility are insufficient for various end-use applications. For desirable mechanical properties, fillers are mixed into the biodegradable polymer matrix. Also, the prices of these biodegradable PBAT are generally high cost, and thus blending with low-price resins becomes an alternative approach to resolving this problem. In particular, biopolymer fillers derived from annually renewable resources and used to form biodegradable blends have received much attention recently. Poly(lactic acid)(PLA) is an attractive material for replacing petrochemical polymers because it is biodegradable and produces form annually renewable resources. PLA is characterized by high tensile strength, but unfortunately the brittleness of PLA limits its applicability. But it is cheaper than PBAT resin. This work was undertaken to examine in the effect of modifiers on the physical and mechanical properties of PLA/PBAT blends. Different degrees of modifiers were used with various amounts. Diisocyanate and coupling agent were used as modifier for increasing miscibility between PLA and PBAT that reacted with hydroxyl group at PLA and PBAT. Tensile strength of PLA/PBAT blends increased slightly whereas elongation at break was improved remarkably up to 500%.
In recent years, the utility of biodegradable polymers has received much attention due to their potential impact upon the complex issue of plastics waste management. Aliphatic polyesters are one of the most promising structural materials for biodegradable or compostable fibers, films, sheets, bottles, injection-molded products, and foamed sheet. poly(butylene adipate-co-terephthalate)(PBAT) is one of the promising materials for the production of environmentally friendly biodegradable polymers. PBAT is one of the typical biodegradable polymers with synthesized using polycondensation of 1,4-butanediol with adipic acid and terephthalic acid. Some applications of PBAT products include packaging films for wrapping of food, office supplies, and clothing, commodity bags, industrial trays and agricultural mulch films for covering of the soil surface in vegetable fields to protect against insects, control growing weeds, and maintain suitable environmental conditions for better growth and effective production of vegetables. Sometimes, the mechanical properties of PBAT such as softness and flexibility are insufficient for various end-use applications. For desirable mechanical properties, fillers are mixed into the biodegradable polymer matrix. Also, the prices of these biodegradable PBAT are generally high cost, and thus blending with low-price resins becomes an alternative approach to resolving this problem. In particular, biopolymer fillers derived from annually renewable resources and used to form biodegradable blends have received much attention recently. Poly(lactic acid)(PLA) is an attractive material for replacing petrochemical polymers because it is biodegradable and produces form annually renewable resources. PLA is characterized by high tensile strength, but unfortunately the brittleness of PLA limits its applicability. But it is cheaper than PBAT resin. This work was undertaken to examine in the effect of modifiers on the physical and mechanical properties of PLA/PBAT blends. Different degrees of modifiers were used with various amounts. Diisocyanate and coupling agent were used as modifier for increasing miscibility between PLA and PBAT that reacted with hydroxyl group at PLA and PBAT. Tensile strength of PLA/PBAT blends increased slightly whereas elongation at break was improved remarkably up to 500%.
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