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Anomalies of Glass Transition: Manifestation in fullerene core polystyrene stars

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Abstract

Segmental dynamics around Tg in the 4- and 6-arm fullerene (C60) core star-like polystyrenes with different preset arm lengths was studied by DSC as compared to that in the linear PS and PS/C60 blend. The ‘anomalies’ in glass transition behavior were found for the stars including both suppression and facilitation of segmental motion, and pronounced dynamic heterogeneity within a transition range. The results are interpreted in terms of breakdown of intermolecular cooperativity of segmental motions and PS-C60 interactions.

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Authors and Affiliations

  1. A. F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    V. A. Bershtein & V. M. Egorov

  2. Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004, St. Petersburg, Russia

    V. N. Zgonnik, E. Yu. Melenevskaya & L. V. Vinogradova

Authors
  1. V. A. Bershtein
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  2. V. M. Egorov
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  3. V. N. Zgonnik
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  4. E. Yu. Melenevskaya
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  5. L. V. Vinogradova
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Bershtein, V.A., Egorov, V.M., Zgonnik, V.N. et al. Anomalies of Glass Transition: Manifestation in fullerene core polystyrene stars. Journal of Thermal Analysis and Calorimetry 59, 23–31 (2000). https://doi.org/10.1023/A:1010163307598

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  • DOI: https://doi.org/10.1023/A:1010163307598

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