Melting kinetics in polymers

D. R. Lippits, S. Rastogi, G. W.H. Höhne

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106 Scopus citations


In polymers, it is possible to obtain single chain forming single crystals. It is feasible to melt these crystals by simple consecutive detachment of chain segments from the crystalline substrate and its diffusion into the melt. However, complication in the melting process occurs when the chain in the process of detachment from the surface is shared between different crystals. Experimentally, a clear distinction in different melting processes is observed, by the differences in the activation energies required for the consecutive detachment of chain segments or of segments having topological constraints. The consecutive detachment of free chain segments starts at the melting temperature predicted from the Gibbs-Thomson equation, whereas higher temperature or time is required if the chain has to overcome the constraints. © 2006 The American Physical Society.
Original languageEnglish (US)
JournalPhysical Review Letters
Issue number21
StatePublished - Jun 12 2006

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