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Issue 2, 2012
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Melting of polymer nanocrystals: a comparison between experiments and simulation

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Abstract

Polymer nanocrystals have attracted considerable attention because of their potential applications in future technology and their fascinating properties which differ from those of corresponding bulk materials. The essential influence of the nanointerface in nanocrystals is apparent in the linear dependence of the melting temperature with the inverse sheet thickness, i.e. the Gibbs–Thomson behaviour. Yet, few experimental and theoretical works have been attempted to highlight the influence of nanointerfaces on the thermal properties of nanocrystals. In this work, simulations were used to evaluate the melting temperature of crystalline polymer nanosheets. Ensuing results were compared favourably to experimental melting temperatures stemming from alkane chains and functional polyolefins, thus validating our simulation approach. Both experimental and simulated results followed Gibbs–Thomson behaviour and a procedure was devised to extract the heat of melting as well as the surface energy from these results. Thus, surface energy of various nanocrystals was found to be widely different for various experimental systems, demonstrating the significance of the environment on thermal properties of nanocrystals.

Graphical abstract: Melting of polymer nanocrystals: a comparison between experiments and simulation

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Publication details

The article was received on 28 Jul 2011, accepted on 19 Sep 2011 and first published on 25 Oct 2011


Article type: Paper
DOI: 10.1039/C1SM06446K
Citation: Soft Matter, 2012,8, 347-352

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    Melting of polymer nanocrystals: a comparison between experiments and simulation

    N. Metatla, S. Palato, B. Commarieu, J. P. Claverie and A. Soldera, Soft Matter, 2012, 8, 347
    DOI: 10.1039/C1SM06446K

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