Premium
Effect of thermal treatment on the micromechanical properties of segmented polyurethanes
Author(s) -
Etienne S.,
Perez J.,
Darud V.,
Pascault J. P.
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.19890230121
Subject(s) - crystallinity , small angle x ray scattering , materials science , morphology (biology) , composite material , thermal , modulus , phase (matter) , dynamic mechanical analysis , thermal treatment , thermal analysis , polymer , scattering , thermodynamics , chemistry , organic chemistry , physics , biology , optics , genetics
The effects of thermal treatments on segmented polyurethanes were studied by low frequency mechanical spectrometry. Complementary informations on the morphology of microphases and characteristic temperatures were given by other techniques such as DSC and SAXS. We have shown that low temperature treatments affected the morphology of the soft phase. High temperature treatments induced modification of dynamic modulus spectra attributed to the evolution of the microphase separation rate and the degree of crystallinity of some hard domains.