Mechanical, rheological, and electrical properties of multiwalled carbon nanotube reinforced ASA/Na-ionomer blend

ABSTRACT Varying amounts of multiwalled carbon nanotubes (MWCNTs) was melt‐extruded with the acrylonitrile‐styrene‐acrylate (ASA)/Na‐ionomer blend, and mechanical, rheological, and electrical properties were studied Optical micrographs show good dispersion level at low MWCNT content and network form...

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Bibliographic Details
Published in:Journal of applied polymer science 2015-09, Vol.132 (36), p.np-n/a
Main Authors: Datta, Pulak, Guha, Chandan, Sarkhel, Gautam
Format: Article
Language:English
Subjects:
Blends
composites
dielectric properties
graphene and fullerenes
Materials science
Mathematical models
monolayers and polymer brushes
Nanotubes
Networks
Percolation
Polymers
Rheological properties
rheology
Shear viscosity
Thresholds
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Summary:ABSTRACT Varying amounts of multiwalled carbon nanotubes (MWCNTs) was melt‐extruded with the acrylonitrile‐styrene‐acrylate (ASA)/Na‐ionomer blend, and mechanical, rheological, and electrical properties were studied Optical micrographs show good dispersion level at low MWCNT content and network formation at higher nanotubes percentage. DC conductivity model data shows percolation threshold reached at 1% MWCNT content and after percolation, two‐dimensional network structure was formed. The “peak and valley” type surface topology of matrix may be responsible for low percolation threshold limit. The polymer/nanotubes interactions at low MWCNT content increased the mechanical strengths, which were reduced by the network structure and agglomerates of nanotubes at higher nanotubes content. The MWCNTs interacted differently with the architecturally complex polymer chains and controlled chain dynamics accordingly. The Carreau‐Yasuda model was found fit to viscosity data and the model parameters data suggest the zero shear viscosity is function of MWCNTs content but the infinite shear viscosity is independent of nanoparticles content. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42516.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.42516