Premium
Multicomponent Hydrogen‐Bonded Liquid Crystalline Mixtures
Author(s) -
Shibaev Peter V.,
Jensen Sune L.,
Andersen Peter,
Schaumburg Kjeld,
Plaksin V.
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010401)22:7<493::aid-marc493>3.0.co;2-s
Subject(s) - differential scanning calorimetry , enthalpy , phase (matter) , phase transition , materials science , polymer , hydrogen bond , isotropy , acrylic acid , polymer chemistry , thermodynamics , chemistry , organic chemistry , copolymer , molecule , physics , quantum mechanics
Phase behaviour of hydrogen‐bonded multicomponent mixtures of bipyridine, dodecyloxybenzoic acid and dicarboxylic acids with poly(acrylic acid) were studied at different compositions and temperatures. It was found that in certain composition ranges, the mixtures form a homogeneous liquid crystalline phase of smectic type with an unusually high enthalpy of transition into the isotropic state. The nature of the anisotropic phase observed in the polymers is discussed. The phase behaviour was studied using IR spectroscopy, differential scanning calorimetry and X‐ray structure analysis.