Effect of the Compounding Procedure on the Structure and Viscoelasticity of Polymer Nanocomposites

Journal Article · Wed Jun 02 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3455573· OSTI ID:21377988

Capuano, G; Filippone, G; Romeo, G; Acierno, D ^[1]

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1. Department of Materials Engineering and Production, University of Naplesi FedericoII, p.le Tecchio 80 80125 Napoli (Italy)

We investigate the relation between the structure and the viscoelastic properties of a model polymer nanocomposite system based on a mixture of inorganic particles and poly(ethyleneoxide). Hydrophilic fumed silica nanoparticles were used as fillers and PEO-based nanocomposites were prepared by melt compounding and freeze-dryng. In both cases, dynamic oscillatory measurements in the melt state highlighted an increase of the frequency-dependent linear viscoelastic moduli with the filler content and a solid-like behaviour above a critical volume fraction. The freeze-dried samples exibhited a significant enhancement of the elasticity at lower filler contents as a result of the effect of particle dispersion on polymer chain dynamics.

• OSTI ID: 21377988
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1255; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CHEMICAL ANALYSIS
COMPOSITE MATERIALS
ELASTICITY
FREQUENCY DEPENDENCE
GRAVIMETRIC ANALYSIS
LYOPHILIZATION
MATERIALS
MECHANICAL PROPERTIES
MINERALS
NANOSTRUCTURES
OXIDE MINERALS
PARTICLES
POLYMERS
QUANTITATIVE CHEMICAL ANALYSIS
SILICA
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS