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Physicochemical characterization of some fully aromatic polyamides
Author(s) -
Gan L. H.,
Blais P.,
Carlsson D. J.,
Suprunchuk T.,
Wiles D. M.
Publication year - 1975
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1975.070190106
Subject(s) - polyamide , differential scanning calorimetry , glass transition , polymer , materials science , dimethylacetamide , aramid , polymer chemistry , characterization (materials science) , yield (engineering) , proton nmr , copolymer , lithium chloride , terephthaloyl chloride , chemical engineering , chemistry , fiber , organic chemistry , composite material , nanotechnology , physics , solvent , engineering , metallurgy , thermodynamics
The characterization of eight fully aromatic polyamides are described with the procedures required to yield film‐ and fiber‐forming materials. Solutions of these aromatic polyamides in dimethylacetamide were characterized by NMR and the effects of dissolved lithium chloride on these spectra investigated. The NMR resonances for specific protons in these polymers are assigned. The IR spectra of thin films and fibers of these polyamides are also reported, together with glass transition temperatures as measured by differential scanning calorimetry (DSC). The value of NMR and IR to identify specific polyamide homopolymers and copolymers is discussed.