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Issue 1, 2017
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Cooperative strings in glassy nanoparticles

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Motivated by recent experimental results on glassy polymer nanoparticles, we develop a minimal theoretical framework for the glass transition in spherical confinement. This is accomplished using our cooperative-string model for supercooled dynamics, that was successful at recovering the bulk phenomenology and describing the thin-film anomalies. In particular, we obtain predictions for the mobile-layer thickness as a function of temperature, and for the effective glass-transition temperature as a function of the radius of the spherical nanoparticle – including the existence of a critical particle radius below which vitrification never occurs. Finally, we compare the theoretical results to experimental data on polystyrene from the recent literature, and we discuss the latter.

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The article was received on 24 Mar 2016, accepted on 06 Jun 2016 and first published on 06 Jun 2016

Article type: Paper
DOI: 10.1039/C6SM00724D
Citation: Soft Matter, 2017,13, 141-146
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    Cooperative strings in glassy nanoparticles

    M. Arutkin, E. Raphaël, J. A. Forrest and T. Salez, Soft Matter, 2017, 13, 141
    DOI: 10.1039/C6SM00724D

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