Abstract
ABSTRACTIn this work, poly (lactic acid) (PLA) and elastomer ethylene-butyl acrylate-glycidyl methacrylate terpolymer (EBA-GMA) containing epoxy groups were melt-blended using a novel vane extruder. The solid-state 13C nuclear magnetic resonance spectra (13C-NMR) and the Fourier-transform infrared (FTIR) spectroscopy proved that epoxy groups of EBA-GMA reacted with the carboxylic acid or hydroxyl groups of PLA during melt blending, resulting in a grafted structure which improved the interfacial adhesion of PLA/EBA-GMA blends. The phase morphology, mechanical and thermal properties were investigated to identify the effect of EBA-GMA weight fraction on the properties of PLA/EBA-GMA blends. Thermogravimetric analysis revealed that the incorporation of EBA-GMA improved the thermal stability of PLA. The impact strength of the annealed PLA80/20EBA-GMA binary blend increased up to ten times compared without annealing process.
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