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Structural characterization of heterocyclic polymer networks by low‐frequency Raman scattering
Author(s) -
Novikov V. N.,
Shebanin A. P.,
Azarenkov V. P.,
Baibak A. V.,
Kramarenko Yu. V.,
Privalko V. P.
Publication year - 1994
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250250202
Subject(s) - raman spectroscopy , raman scattering , oligomer , materials science , scattering , molecular physics , polymer , crystallography , analytical chemistry (journal) , chemical physics , chemistry , polymer chemistry , optics , physics , composite material , organic chemistry
Glassy, heterocyclic copolymers of an epoxy oligomer and hexamethylene diisocyanate were characterized by low‐frequency Raman scattering spectra at room temperature. The experimental data were treated according to the formalism of the theory of inelastic light scattering from fractons to derive structural information in the scale range below 10 nm. The samples studied were shown to behave essentially fractal‐like in the range of characteristic scales (on an order‐of‐magnitude basis) spanning roughly the chain persistence length ( ca. 0.7 nm) as a lower structural limit and the network mesh size ( ca. 3 nm) as an upper structural limit.