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In this work, a specific polylactide(PLA) 4032D was melt-mixed with a new toughener: butyl acrylate(BA), ethyl acrylate(EA) and glycidyl methacrylate(GMA) copolymer(BA-EA-GMA). DMA tests showed that PLA/BA-EA-GMA blends were partially miscible. The degree of crystallinity of PLA increased while the cold crystallization temperature shifted to higher temperatures with increasing BA-EA-GMA content. The SEM micrographs showed that PLA/BA-EA-GMA blends had a good dispersion and this phenomenon was in good agreement with their higher impact strength. The result showed that the adding of BA-EA-GMA has enhanced the flexibility of PLA/BA-EA-GMA blends as compared with pure PLA. The impact strength was changed from 3.4 kJ/m2for pure PLA to 29.6 kJ/m2for 80/20 PLA/BA-EA-GMA blend.
In this work, a specific polylactide (PLA) 4032D was melt-mixed with a new toughener: butyl acrylate (BA), ethyl acrylate (EA) and glycidyl methacrylate (GMA) The degree of crystallinity of PLA increased while the cold crystallization temperature shifted to higher temperatures with increasing BA-EA-GMA content. The SEM micrographs showed that PLA / BA-EA-GMA blends had a good dispersion and this phenomenon was in good agreement with their higher impact strength. The result showed that the adding of BA-EA-GMA has enhanced the flexibility of PLA / BA-EA-GMA blends as compared with pure PLA. The impact strength was changed from 3.4 kJ / m2for pure PLA to 29.6 kJ / m2for 80/20 PLA / BA-EA-GMA blend.