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Characterization of the amorphous phase of polyacetylene by thermally stimulated currents
Author(s) -
El Hout Jamal,
Chatain Daniel,
Lacabanne Colette,
Montanerb Antoine,
Galtierb Michel
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.19890240112
Subject(s) - amorphous solid , polyacetylene , relaxation (psychology) , crystallite , materials science , phase (matter) , chemical physics , polyamorphism , spectroscopy , characterization (materials science) , dielectric , phase transition , polymer , diffusion , condensed matter physics , crystallography , composite material , chemistry , nanotechnology , physics , optoelectronics , thermodynamics , organic chemistry , metallurgy , psychology , social psychology , quantum mechanics
The Thermally Stimulated Current (TSC) Spectroscopy has shown that cis‐polyacetylene can be considered as a semi‐crystalline polymer. Indeed a relaxation mode obeying a compensation law has been observed: it is the dielectric manifestation of the glass transition. Upon oxidation, two TSC peaks have been observed. They have been associated with two diffusion processes revealing the existence of two amorphous phases: ‐ the intrafibrillar amorphous phase located between crystallites inside the fibrils, ‐ the interfibrillar amorphous phase situated between the fibrils and so much more exposed to oxygen.