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

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Abstract

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.

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Acknowledgments

This research was supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China (grant no. 20100181110029).

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Authors and Affiliations

  1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, Sichuan, People’s Republic of China

    Shilin Huang, Zhengying Liu, Chaolu Yin, Yu Wang, Yongjuan Gao & Mingbo Yang

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  1. Shilin Huang
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  2. Zhengying Liu
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  3. Chaolu Yin
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  4. Yu Wang
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  5. Yongjuan Gao
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  6. Mingbo Yang
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Correspondence to Zhengying Liu or Mingbo Yang.

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Huang, S., Liu, Z., Yin, C. et al. A dynamic study on nonlinear viscoelastic behavior of isotactic polypropylene/carbon black composite melts. Colloid Polym Sci 289, 1927–1931 (2011). https://doi.org/10.1007/s00396-011-2520-y

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  • DOI: https://doi.org/10.1007/s00396-011-2520-y

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