Abstract
A new economical applied method has been developed to modify the polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS) immiscible blends. The different molecular weights of polyethylene glycol (PEG) were adopted during processing. The morphology of PLA/ABS blends was successfully controlled by 10 wt% content of PEG, and the morphology results show remarkable changes at the PLA/ABS blend interface. A fluctuation of the storage modulus at the frequency lower than 0.1 rad/s of PLA/PEG/ABS blends also reflects the structure change in the system. The mechanical properties as well as the thermal and decomposition properties of the modified blends improve with increasing molecular weight of PEG. All the results of properties indicate that the interaction of polymer blend molecular chain decreases and the processability of the PLA/ABS blends increase both due to the addition of PEG.
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