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Rupture in rapid uniaxial extension of linear entangled melts

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Abstract

We have carried out uniaxial extension experiments on a monodisperse entangled melt to illustrate the origin of failure in the glass-like zone defined by Malkin and Petrie (J Rheol 41:1–25, 1997). The entangled melt was found to undergo a yield-to-rupture transition beyond a critical rate. We show that the onset of the “glass-like” zone defined by Malkin and Petrie is actually in the middle of the rubbery plateau where the mechanical response of entangled melts is not dictated by glassy chain dynamics. The rupture occurs plausibly through chain scission in the limit of finite chain extensibility.

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Acknowledgements

The authors would like to express their sincere gratitude to Dr. Xiaorong Wang from Bridgestone-Americas Center for Research and Technology for providing the SBR sample in this study. This work is supported, in part, by grants (DMR-0821697 and CMMI-0926522) from the National Science Foundation.

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Authors and Affiliations

  1. Department of Polymer Science and Maurice Morton Institute of Polymer Science, University of Akron, Akron, OH, 44325-3909, USA

    Yangyang Wang & Shi-Qing Wang

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  1. Yangyang Wang
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  2. Shi-Qing Wang
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Correspondence to Shi-Qing Wang.

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Wang, Y., Wang, SQ. Rupture in rapid uniaxial extension of linear entangled melts. Rheol Acta 49, 1179–1185 (2010). https://doi.org/10.1007/s00397-010-0491-4

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