| Summary: | The current paper investigates the influence of poly(methyl methacrylate-coethyl
acrylate) (PMMA-co-EA) content on the flow, mechanical, thermal and
morphological properties of poly(lactic acid) (PLA). Mechanical test results
indicated that the blends were softer and tougher due to the decreased tensile
and flexural strengths and the increased elongation at break and impact
resistance. With the presence of PMMA-co-EA, regions of amorphous were
found to increase together with the decreased degree of crystallinity at all blend
compositions. Rheological properties indicated that molten PLA/PMMA-co-EA
blends were more viscous in both under shear and applied load, which suitable
for the blow molding process. At 10 wt%, the increased shear viscosity and
decreased melt flow index (MFI) were around 240 and 63% respectively.
PMMA-co-EA provided good bottle blown product at 10 wt%. Less than this
concentration, some flaws were clearly observed.
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