Premium
Structure formation in polymer blend solutions
Author(s) -
Kammer H. W.,
Kummerlöwe C.,
Morgenstern B.
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.19920580109
Subject(s) - polymer , materials science , phase (matter) , polymer blend , light scattering , optical microscope , solvent , evaporation , chemical engineering , thermal , polymer chemistry , chemical physics , decomposition , scattering , copolymer , thermodynamics , chemistry , composite material , scanning electron microscope , optics , organic chemistry , physics , engineering
Development of phase‐separated morphologies has been studied in polymer blend solutions and forced mixtures of highly immiscible polymers by optical microscopy, DSC and light scattering. Unmixing was induced by different courses of solvent evaporation and by thermal agitation, respectively. Blends comprising different kinds of flexible and rigid chain molecules display various phase patterns in the late stage of phase decomposition which can be characterized roughly as being either regularly bicontinuous or irregularly shaped. Effects of polymer‐polymer interaction and the blending ratio are discussed. Generally, evolution of morphologies depends on both internal parameters of the system and externally imposed unmixing conditions. Limits of percolating morphologies in the course of phase separation can be established qualitatively.