Effect of LLDPE-g-MA on the rheological, thermal, mechanical properties and morphological characteristic of PA6/LLDPE blends

The development of polyamide 6 (PA6) and linear low-density polyethylene (LLDPE) blends is of great technological interest, as they have the potential to combine the good mechanical and thermal properties of PA6 with the high impact properties and good processability of the LLDPE. However, these two...

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Bibliographic Details
Published in:Journal of polymer research 2019-06, Vol.26 (6), p.1-10, Article 134
Main Authors: dos Anjos, Erick Gabriel Ribeiro, Backes, Eduardo Henrique, Marini, Juliano, Pessan, Luiz Antonio, Montagna, Larissa Stieven, Passador, Fabio Roberto
Format: Article
Language:English
Subjects:
Anhydrides
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Compatibility
Density
Impact strength
Industrial Chemistry/Chemical Engineering
International markets
Low density polyethylenes
Maleic anhydride
Mechanical analysis
Mechanical properties
Morphology
Organic chemistry
Original Paper
Polyamide resins
Polymer blends
Polymer Sciences
Reagents
Rheological properties
Rheology
Thermodynamic properties
Twin screw extruders
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Summary:The development of polyamide 6 (PA6) and linear low-density polyethylene (LLDPE) blends is of great technological interest, as they have the potential to combine the good mechanical and thermal properties of PA6 with the high impact properties and good processability of the LLDPE. However, these two polymers are chemically and structurally different and therefore immiscible, and in general incompatible. The objective of this study was to evaluate the effect of maleic anhydride-grafted linear low-density polyethylene (LLDPE- g -MA) as compatibilizer agent on rheological, thermal, mechanical and morphological properties of PA6/LLDPE blends. PA6/LLDPE blends with different contents of LLDPE (10, 20, 30, 40 and 50 wt%) and with the addition of LLDPE- g -MA (5 wt%) were prepared in a twin screw extruder and the thermal and mechanical analysis were performed. The addition of LLDPE- g -MA as compatibilizer agent resulted in a better distribution and dispersion of LLDPE in PA6 matrix and a significant improvement in mechanical and thermal properties. The addition of the compatibilizer agent increased 160% the impact strength for the 50/50 (PA6/LLDPE) blend.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-019-1800-y