Abstract
Polylactide/Organo-Montmorillonite (PLA/OMMT) Nanocomposites were prepared by melting extrusion using a novel vane extruder (VE), which can induce global elongational flow. In the study, the influence of different concentrations of the OMMT on the morphological and thermal properties were investigated. The morphology and structure of the nanocomposites were evaluated using Fourier Transform Infrared Spectroscopy (FTIR), the X-ray diffraction (XRD) and transmission electron microscopy (TEM) respectively, whereas the thermal behaviors and thermal stabilities were characterized using differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) respectively. The results illustrate that PLA/OMMT nanocomposites displayed clear intercalation and/or exfoliation structures. Interestingly, increasing the clay content did not lead to the agglomeration of OMMT layers. Moreover, the presence of nanoclay decreased the enthalpy of crystallization of PLA/OMMT composites. Also, the melting temperatures of the nanocomposites were reduced by the addition of nanoclay.
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