Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 298, Issue 3, Pages 328-338Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201200047
Keywords
anti-coalescence barrier; compatibilization; nanocomposites; polyamide; polymer blends
Funding
- Wallonia Region
- Nord-Pas de Calais Region
- European Community
- European Commission
- Region Wallonne FEDER program (Materia Nova)
- OPTI2MAT program of excellence
- Interuniversity Attraction Pole program of the Belgian Federal Science Policy Office [PAI 6/27]
- FNRS-FRFC
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The effect of hydrophilic and hydrophobic nanosilica on the morphological, mechanical and thermal properties of polyamide 6 (PA) and poly(propylene) (PP) blends is investigated by extrusion compounding. Depending on the difference between the polymer/nanoparticle interfacial tensions, different morphologies are obtained as highlighted by TEM and SEM. Hydrophobic nanosilica migrates mainly at the PA/PP interface, which leads to a clear refinement of PP droplet size. The macroscopic properties of the hybrid blends are discussed and interpreted in relation with the blend morphology and melt-mixing procedure. The control over coalescence allows a morphology refinement of the blends and improves mechanical properties.
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