Role of a compatibilizer in the structure and micromechanical properties of recycled poly(ethylene terephthalate)/polyolefin blends with clay

The comparison of the degree of crystallinity and the micromechanical properties in the blends of recycled amorphous poly(ethylene terephthalate) (PET) with isotactic polypropylene (iPP) and high-density polyethylene (HDPE) with a compatibilizer in different proportions is reported. The physical stu...

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Bibliographic Details
Published in:Journal of applied polymer science 2010-11, Vol.118 (3), p.1278-1287
Main Authors: Hellati, A, Benachour, D, Cagiao, M.E, Boufassa, S, Baltá Calleja, F.J
Format: Article
Language:English
Subjects:
Applied sciences
Blends
Clay (material)
Compatibility
compatibilization
differential scanning calorimetry (DSC)
Exact sciences and technology
Hardness
Polyethylene terephthalates
Polyethylenes
Polymer blends
Polymer industry, paints, wood
Polypropylenes
Technology of polymers
Waste treatment
WAXS
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Summary:The comparison of the degree of crystallinity and the micromechanical properties in the blends of recycled amorphous poly(ethylene terephthalate) (PET) with isotactic polypropylene (iPP) and high-density polyethylene (HDPE) with a compatibilizer in different proportions is reported. The physical study of the composites of the compatibilized blends and clay is also discussed. The analysis, performed by means of wide-angle X-ray scattering and differential scanning calorimetry techniques, permits us to describe, at microscale level, the role of the compatibilizer on the structure and microhardness of the polymer blends that we studied. The results reveal that PET was incompatible with both iPP and HDPE. However, the presence of the compatibilizer, a styrene-ethylene/butylene-styrene block copolymer grafted with maleic anhydride, allowed the compatibilization of these polymers. In the PET/iPP blends, the clay seemed to have a nucleating effect on the iPP and also induced a hardness increase in the compatibilized blends. On the other hand, in case of PET/HDPE, the crystallinity of these samples (pure blends, blends with compatibilizer, and blends with compatibilizer plus clay) only depended on their composition. Similarly to the PET/iPP blends, the addition of clay induced an increase in the hardness of the compatibilized blends.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.32090