A dynamic study on nonlinear viscoelastic behavior of isotactic polypropylene/carbon black composite melts

The influence of the filler loading and the kinetic aggregation process on the nonlinear viscoelastic behavior of the isotactic polypropylene/carbon black composite melts is studied. The limit of linearity decreases with increasing filler loading. The composite melt with a percolating rheological ne...

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Bibliographic Details
Published in:Colloid and polymer science 2011-11, Vol.289 (17-18), p.1927-1931
Main Authors: Huang, Shilin, Liu, Zhengying, Yin, Chaolu, Wang, Yu, Gao, Yongjuan, Yang, Mingbo
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Exact sciences and technology
Food Science
Forms of application and semi-finished materials
Nanotechnology and Microengineering
Physical Chemistry
Polymer industry, paints, wood
Polymer Sciences
Short Communication
Soft and Granular Matter
Technology of polymers
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Summary:The influence of the filler loading and the kinetic aggregation process on the nonlinear viscoelastic behavior of the isotactic polypropylene/carbon black composite melts is studied. The limit of linearity decreases with increasing filler loading. The composite melt with a percolating rheological network has an additional strain-softening process at the low strains which is attributed to the breakdown of the filler network. The simultaneous measurement of the conductivity during the strain sweep demonstrates that the rheological network is more easy to be broken than the conductive network, and that some of the aggregated structures formed during melt annealing can be retained even after experiencing high strains.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-011-2520-y