ENGLISH

Theory of lyotropic polymer liquid crystals

By Odijk T.

Book information

Year
1986
Language
english
Format
DJVU
Filesize
949 kB (971483 bytes)
Series
Macromolecules review
Pages
17\17
Library
Kolxo3
DPI
300
Time added
2009-07-20 03:45:11

Description

The statistical physics of lyotropic polymer liquid crystals is reviewed and extended, an analysis being given of the effect of the third virial coefficient, charge, semiflexibility, bidispersity, and polydispersity. The isotropic-nematic phase transition is discussed for long rods along the lines of the virial expansion, and the influence of bidispersity and polydispersity is considered. For polyelectrolytes the effects of twist and an increased effective diameter on liquid crystal formation are treated. This is extended to bidisperse and semiflexible polyelectrolytes. The configurational entropy of nematic semiflexible polymers is calculated by different methods and is shown to differ markedly from that of rigid rods. The effect of semiflexibility on the phase transition is analyzed for both mono- and bidisperse systems, the theory agreeing well with data on slender polymer chains like schizophyllan and polyG-benzyl L-glutamate).

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