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Theory of nematic networks with finite extensibility
Author(s) -
Rusakov Victor V.,
Shliomis Mark I.
Publication year - 1992
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.1992.040010605
Subject(s) - liquid crystal , elasticity (physics) , extensibility , statistical physics , deformation (meteorology) , phase transition , polymer , chain (unit) , materials science , physics , thermodynamics , condensed matter physics , computer science , composite material , quantum mechanics , operating system
Abstract A statistical molecular model of polymer networks, which takes into account inter‐molecular orientational interaction and constancy of the chain contour length, is proposed. A simple formula for the network free energy valid for any deformations is obtained. A system of equations which describes orientational‐elastic interactions in polymer networks is derived. The influence of deformation and degree of cross linking on the conditions of network phase transition into the orientationally ordered state of the nematic type is studied. The deformation curves considerably deviate from those predicted by the classical elasticity theory. A comparison of the proposed theory with experimental data for natural rubbers is carried out.

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