Effect of glyceryl triacetate on properties of PLA/PBAT blends.

Author: Nan YANG ¹ ; Xiyuan WANG ¹ ; Yunxuan WENG ¹ ; Yujuan JIN ¹ ; Min ZHANG ¹
Author Information

1. School of Materials and Mechanical Engineering of Beijing Technology & Business University, Beijing 100048, China.
Publication Type:Journal Article
Keywords: blend; compatibility; glyceryl triacetate; poly(butyleneadipate-co-terephthalate); poly(lactic acid)
MeSH: Acetates; chemistry; Calorimetry, Differential Scanning; Crystallization; Lactic Acid; Polyesters; chemistry; Polymers; Temperature
From: Chinese Journal of Biotechnology 2016;32(6):839-847
CountryChina
Language:Chinese
Abstract: Poly lactic acid (PLA)/Poly (butyleneadipate-co-terephthalate)(PBAT) and glyceryl triacetate (GTA) blend were prepared by torque rheometer, and the effect of GTA on thermodynamical performance, mechanical properties and microstructure of PLA/PBAT composites were studied using differential scanning calorimeter(DSC), dynamic mechanical analysis(DMA), universal testing machine, impact testing machine and scanning electron microscope(SEM). After adding GTA, Tg values of the two phases gradually became closer, blends cold crystallization temperature and melting temperature decreased. When with 3 phr GTA, the dispersed phase particle size of PLA/PBAT blend decreased. Mechanics performance test showed that the elongation at break and impact strength of the PLA/PBAT blend was greatly increased with 3 phr GTA, and the elongation at break increased 2.6 times, improved from 17.7% to 64.1%.