Study on the Properties of Poly(lactic Acid) and Thermal Plastic Starch Blended Materials Plasticized by PEG 200

Abstract:

In this paper, the blended materials of poly(lactic acid) (PLA) and thermal plastic starch (TPS) under the plasticization of polyethylene glycol (PEG) 200 were prepared. By detecting the thermal, rheological and tensile properties, it evaluated the plasticization effect of PEG 200 on blended materials. Specifically, for thermal properties, the addition of PEG 200 could improve mobile ability of PLA macromolecules, and accelerated them to form crystalline. But if the content of PEG 200 was more than 10%, this effect was impaired. For rheological properties, PEG 200 could change the fusant of blended materials from pseudoplastic fluid to newton fluid. However, if the PEG 200 was added too much, the blended material was too like perfect newton fluid to be prepared suitably. For tensile properties, when content of PEG 200 was more than 10%, the elongation and tensile modulus would changed sharply. All in all, 10% was the suitable addition parameter for PEG 200. Above this content, the plasticization effect of PEG 200 was too strong to impaired materials properties.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 813-817
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.813
• Online since: July 2012
• Authors: Peng Liu, Cai Qin Gu, Qing Zhu Zeng, Hao Huai Liu
• Keywords: PEG 200, PLA/TPA Blended Materials, Plasticization Effect

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