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Rheological and Mechanical Properties of Poly(lactic acid)/Bio-Based Polyethylene/Clay Biocomposites Containing Montmorillonite and Vermiculite Clays
This work aims to investigate the effect of organically modified montmorillonite (OMMT) and vermiculite (OVT) clays on the properties of poly(lactic acid) (PLA)/bio-based polyethylene (BioPE)/clay biocomposites. Ethylene-methyl acrylate-glycidyl methacrylate (EMA-GMA) copolymer was used to improve t...
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Published in: | Journal of polymers and the environment 2021-06, Vol.29 (6), p.1777-1788 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | This work aims to investigate the effect of organically modified montmorillonite (OMMT) and vermiculite (OVT) clays on the properties of poly(lactic acid) (PLA)/bio-based polyethylene (BioPE)/clay biocomposites. Ethylene-methyl acrylate-glycidyl methacrylate (EMA-GMA) copolymer was used to improve the interactions between the clay and the bio-based polymers. X-ray diffraction (XRD) patterns indicated a good dispersion of the OMMT and OVT clays in the PLA/BioPE blend. Morphology analysis by scanning electron microscopy (SEM) revealed a substantial decrease in the BioPE particles domain size with the addition of OMMT and OVT clays to PLA/BioPE blend and a better wetting of BioPE phase in the presence of EMA-GMA, resulting in higher impact strength. Dynamic mechanical thermal analysis (DMTA) showed a decrease in the glass transition (T
g
) and cold crystallization (T
cc
) temperatures of PLA with the addition of OMMT and OVT clays to the PLA/BioPE blend. A significant change in the rheological properties (complex viscosity, storage modulus, and relaxation time) was observed with the addition of EMA-GMA copolymer to PLA/BioPE/clay biocomposites. |
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ISSN: | 1566-2543 1572-8919 |
DOI: | 10.1007/s10924-020-02015-z |