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Statistical thermodynamics of single-chain single crystals

✍ Scribed by Erqiang Chen; Haishan Bu; Xiulan Hu

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
270 KB
Volume
3
Category
Article
ISSN
1022-1344

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✦ Synopsis

Abstract

A simple statistical mechanical theory is developed assuming a chain‐folded crystal. Taking account of the side‐surface energy of the single‐chain single crystal, the partition function and the free energy are calculated. Also, the expressions for equilibrium thickness l~e~ and melting temperature T~m, e~ of the single‐chain single crystal are obtained, and they are similar to that given by a thermodynamic analysis of the single‐chain single crystal. It is shown that l~e~ depends on temperature and on the molar mass of the single‐chain single crystal, while T~m, e~ depends on the molar mass. Furthermore, it is found that the side‐surface and the fold‐surface free energies γ and γ~e~ can be explained on a molecular basis.

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