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Multiphase‐Separated Polyurethanes Studied by Micro‐Raman Spectroscopy
Author(s) -
Janik Helena,
Pałys Barbara,
Petrovic Zoran S.
Publication year - 2003
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/marc.200390039
Subject(s) - raman spectroscopy , monochromatic color , materials science , spectroscopy , analytical chemistry (journal) , optics , chemistry , chromatography , physics , quantum mechanics
Micro‐Raman spectroscopy has been used to investigate the chemical micro‐heterogeneity of multiphase‐separated poly(ether urethanes) (PETU). Analysis of PETU cross‐sections by means of micro‐Raman spectroscopy revealed the nearly complete absence of soft segments in AI aggregates (called globules). These aggregates are in the order of a few micrometers in size. The composition of the matrix and the AII aggregates (spherulites) was comparable.Example of an AFM image (sample 706, scan size 25 μm, converted to monochromatic image).