Effect of the processing method on the mechanical properties and morphology of compatibilized PA6/LDPE blends

In this work, the effect of the processing method on the mechanical properties and morphology of compatibilized PA6/LDPE blends was investigated. The blends were prepared by two processing methods: Injection and Extrusion followed by Injection. The compatibilizers used were polyethylene grafted with...

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Bibliographic Details
Published in:Journal of materials science 2008-07, Vol.43 (13), p.4443-4449
Main Authors: Agrawal, Pankaj, Araújo, Edcleide M., Mélo, Tomás J. A.
Format: Article
Language:English
Subjects:
Acrylic acid
Anhydrides
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Compatibility
Compatibilizers
Crystallography and Scattering Methods
Elongation
Exact sciences and technology
Extrusion
Extrusion moulding
Impact strength
Injection moulding
Low density polyethylenes
Machinery and processing
Maleic anhydride
Materials Science
Mechanical properties
Mixtures
Morphology
Moulding
Plastics
Polyethylene
Polymer industry, paints, wood
Polymer Sciences
Solid Mechanics
Technology of polymers
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Summary:In this work, the effect of the processing method on the mechanical properties and morphology of compatibilized PA6/LDPE blends was investigated. The blends were prepared by two processing methods: Injection and Extrusion followed by Injection. The compatibilizers used were polyethylene grafted with acrylic acid (PEgAA) and polyethylene grafted with maleic anhydride (PEgMA). The results showed that in both processing methods the impact strength and elongation at break of the compatibilized blends were greater than those of the uncompatibilized ones. For the blends prepared by injection, the impact strength of PA6/PEgMA/LDPE blend was greater than that of PA6/PEgAA/LDPE blend. For the blends prepared by extrusion followed by injection, the impact strength of the PA6/PEgAA/LDPE blend was greater than that of PA6/PEgMA/LDPE blend. SEM analysis showed that the morphology of the PA6/PEgAA/LDPE blend prepared by extrusion followed by injection was more stable than that of the same blend prepared only by injection.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-008-2661-7