A New Biodegradable Injection Moulded Bioplastic from Modified Soy Meal and Poly (butylene adipate-co-terephthalate): Effect of Plasticizer and Denaturant

作者：Zhou Xiaobo; Mohanty Amar^*; Misra Manju

来源：Journal of Polymers and the Environment, 2013, 21(3): 615-622.

DOI：10.1007/s10924-013-0578-y

• Plasticized soy meal
• Poly (butylene adipate-co-terephthalate)
• Guanidine hydrochloride
• Bioblends

Soy meal, a co-product of the soy oil-based biodiesel industry, has up to 50 % protein content. The main aim of this work was to develop value-added application for soy meal. Soy meal was plasticized by glycerol and water, denatured by the addition of guanidine hydrochloride (GHCl), and then blended with poly (butylene adipate-co-terephthalate) (PBAT), petroleum based tough biodegradable polymer. Characterization by FTIR spectroscopy confirmed that soy meal was plasticized and denatured. The blends of PBAT/soy meal (SM), PBAT/plasticized soy meal and PBAT/GHCl modified plasticized soy meal (mPSM) were fabricated by industry prevalent extrusion and injection molding process. The developed bioblends were characterized by thermal and mechanical testing. One of the important outcomes of this research was that elongation of the bioblend was found to increase by 80 % after plasticization and denaturation of soy meal. Scanning electron microscope analysis showed that PBAT/mPSM blends have smoother surfaces and better internal structures than the other two.

• 出版日期2013-9