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Investigations of the phase behavior of rod‐like polyesters and polyamides substituted by flexible side chains
Author(s) -
Ballauff M.
Publication year - 1989
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19890260107
Subject(s) - thermotropic crystal , polyester , mesophase , steric effects , polyamide , side chain , phase (matter) , materials science , polymer chemistry , isotropy , chain (unit) , polymer , chemistry , composite material , organic chemistry , liquid crystalline , physics , optics , astronomy
The phase behavior of a number of rigid‐chain polyesters and polyamides is reviewed and compared to the result obtained from low‐molecular‐weight model systems. The dilution of the steric forces by flexible side chains appended to the rigid main chains is discussed. It is shown that even stiff‐chain polyamides may be transformed to a thermotropic mesophase and an isotropic melt if the number and length of side chains per repeating unit is high enough.