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Plastic Deformation of Glassy Polymers: Correlation Between Shear Activation Volume and Entanglement Density

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The shear activation volumes of miscible polystyrene-poly(2,6-dimethyl-1,4-phenylene oxide) (PS-PPO) blends at different PS-PPO ratios were determined experimentally by both plane strain and uniaxial compression at constant strain rates. We find that the same correlation between the shear activation volume V*eq and the entanglement density ρe holds for the blend as well as for various pure glassy polymers: V*eq ∝ ρe0.6. Since the shear activation volume is closely related to the size of the plastic shear zones, this correlation suggests that the cooperativity of the elementary processes of plastic deformation in glassy polymers scales with the entanglement density.

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Authors and Affiliations

  1. Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA

    Janet Ho & Marcel Utz

  2. Dutch Polymer Institute (DPI), Eindhoven University of Technology, Eindhoven, The Netherlands

    Leon Govaert

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  1. Janet Ho
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  2. Leon Govaert
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  3. Marcel Utz
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Ho, J., Govaert, L. & Utz, M. Plastic Deformation of Glassy Polymers: Correlation Between Shear Activation Volume and Entanglement Density. MRS Online Proceedings Library 734, 33 (2002). https://doi.org/10.1557/PROC-734-B3.3

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  • DOI: https://doi.org/10.1557/PROC-734-B3.3

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