ArticleScientific reports2026
Thermomechanical recycling of post-consumer poly(ethylene terephthalate) bottles and post-industrial polyamide 6 fishing nets reinforced with organo-modified montmorillonite.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study involved the mechanical recycling of post-consumer poly(ethylene terephthalate) (PET) bottles and post-industrial polyamide 6 (PA6) fishing nets to create sustainable, high-value materials. Their blends and nanocomposites with organo-modified montmorillonite (OMMT) were melt fabricated using twin screw extruder and injection molding machine. Recycled PET (rPET)/recycled PA6 (rPA6) blends (90/10 to 50/50 wt%) exhibited a sea-island morphology with rPA6 droplets dispersed in the rPET matrix. Their melt flow index decreased as rPA6 content increased, indicating an increased melt viscosity. This is due to the in situ copolymers formed through ester-amide exchange reactions between rPET and rPA6 during processing, leading to improved mechanical properties. Compared to neat rPET, the blends exhibited increased tensile strength, elongation at break, and impact strength along with the reduced Young's modulus. The blend containing 30 wt% rPA6 showed the balanced improvement in mechanical properties, which was chosen for preparing nanocomposites with small loadings of OMMT (1, 2, and 3 phr) to further enhance the material's properties. X-ray diffraction and transmission electron microscopy confirmed the presence of an exfoliated structure in these nanocomposites. The addition of OMMT caused an increase in rPA6 domain size due to a strong tendency of OMMT to selectively localize within the rPA6 phases. Finally, the nanocomposite with 1 phr OMMT exhibited the optimal improvement in mechanical properties compared to the neat rPET/rPA6 blend, which can make the recycled materials more suitable for a wider range of applications.
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