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A simple and fast method for evaluating the athermal limit of semirigid liquid polymers
Author(s) -
Figari Giuseppe,
Costa Camilla,
Ottonelli Massimo
Publication year - 1999
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/(sici)1521-3919(19990501)8:3<230::aid-mats230>3.0.co;2-1
Subject(s) - isotropy , polymer , anisotropy , dispersity , rigidity (electromagnetism) , limit (mathematics) , monomer , materials science , simple (philosophy) , statistical physics , thermodynamics , polymer chemistry , mathematics , physics , mathematical analysis , composite material , optics , philosophy , epistemology
A simple method is reported allowing the fast evaluation of the athermal limit that is implicitly present within the set of equations recently proposed by Jonah, Brostow and Hess, dealing with the anisotropic‐isotropic equilibria of single monodisperse or nearly monodisperse semirigid liquid polymers, including polymer liquid crystals. We have found an athermal limit dependent on the degree of rigidity θ of the given semirigid liquid polymer ( θ being the fraction of its monomeric units belonging to rigid rodlike sequences within each semiflexible polymeric chain) and marked off by critical lengths η al of the rigid sequences, giving rise to non‐finite asymptotic values of the anisotropic‐isotropic temperatures.