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Determination of persistence lengths and mark‐houwink constants of aromatic polyesters from GPC‐differential viscometric coupling
Author(s) -
Schmitt R.,
Bolle B.,
Greiner A.,
Heitz W.
Publication year - 1992
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.19920610123
Subject(s) - polyester , viscometer , persistence length , intrinsic viscosity , gel permeation chromatography , polymer chemistry , chemistry , solubility , materials science , viscosity , polymer , analytical chemistry (journal) , chromatography , organic chemistry , composite material
The introduction of lateral substituents and/or twisted biphenylylene units increase the solubility of aromatic para‐linked polyesters. Two polyesters of this type of structure were characterized by gel permeation chromatography (GPC), low angle laser light scattering (LALLS) and viscometry. From the molecular weights and limiting viscosity numbers obtained by universal calibration and LALLS/viscometry the Mark‐Houwink constants and persistence lengths were determined. The values of these parameters indicated that the polyesters can be described as wormlike chains in dilute solution.