LDPE/PLA/EVA Ternary Blends: Toward Rheology, Morphology andMechanical Properties

The role of ethylene vinyl acetate copolymer (EVA) as a compatibilizer in low density polyetylene(LDPE)/poly(lactic acid) (PLA) blend was investigated by linear viscoelastic melt rheological,morphological and tensile mechanical properties assessments. Higher rheological properties at lowfrequencies as well as finer morphology of LDPE/PLA/EVA ternary blend in comparision withLDPE/PLA binary blend indicated interface properties between LDPE matrix phase and PLA dropletphase could be modified in the presence of EVA. This was also confirmed by higher tensile strengthand, especially elongation-at-break values of the ternary blend compared to the binary blend. Thesefindings implied the capability of EVA to compatibilize LDPE/PLA blends

کلیدواژه ها:

Blend ، compatibilization ، Polyethylene ، Poly(lactic acid) ، Ethylene vinyl acetatecopolymer