Influence of a Multifunctional Epoxy Additive on the Performance of Polyamide 6 and PET Post-Consumed Blends during Processing

In this study, a commercial chain extender (Polyad PR 002) in concentrations of 0.5, 1.0, and 1.5% w/w was used as a compatibilizer in post-consumed PET/PA6 blends (25/75, 50/50 e 75/25) processed in a laboratory mixer. The degradation rate, phase miscibility, chemical interaction, crystallization,...

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Bibliographic Details
Published in:Sustainability 2022-12, Vol.14 (24), p.16658
Main Authors: Costa, Anna Raffaela de Matos, Henrique, Mariana Alves, Luna, Carlos Bruno Barreto, Carvalho, Laura Hecker de, Almeida, Yêda Medeiros Bastos de
Format: Article
Language:English
Subjects:
Calorimetry
Chemical reactions
Compatibility
Compatibilizers
Crystallization
Differential scanning calorimetry
Epoxy resins
Impact strength
Interfacial bonding
Mechanical properties
Miscibility
Mixtures
Nitrogen
Polyamide resins
Polyamides
Polyethylene terephthalate
Polymer blends
Polymers
Scanning electron microscopy
Stability analysis
Sustainability
Synergism
Temperature effects
Tensile strength
Thermal stability
Thermogravimetric analysis
Thermogravimetry
Viscosity
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Summary:In this study, a commercial chain extender (Polyad PR 002) in concentrations of 0.5, 1.0, and 1.5% w/w was used as a compatibilizer in post-consumed PET/PA6 blends (25/75, 50/50 e 75/25) processed in a laboratory mixer. The degradation rate, phase miscibility, chemical interaction, crystallization, and melting behavior, as well as the thermal stability of the mixtures, were analyzed by torque rheometry, scanning electron microscopy (SEM), FTIR spectroscopy, differential scanning calorimetry (DSC), and thermogravimetry (TGA), respectively. The results showed that the addition of 1% chain extender was sufficient to increase the melt viscosity of the PET-rich mixtures and 1.5% for the PA6-rich samples. Clearly, adding Polyad PR 002 to PET/PA6 blends improves polymer compatibility; for the 25%PET/75%PA6 blend with 1.5% PR 002, complete miscibility was observed, indicating a new compatible blend formation, revealing a chemical reaction between the systems, and proving the synergism between them. This chain extender did not affect the thermal stability of the blends, and the low contents employed reduced the crystallization rate of the blends investigated.
ISSN:2071-1050
2071-1050
DOI:10.3390/su142416658