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Synthesis and properties of aromatic polyamides from 2,7‐triptycenediamine
Author(s) -
Kasashima Yoshio,
Kaneda Takuya,
Saito Go,
Akutsu Fumihiko,
Naruchi Kiyoshi,
Miura Masatoshi
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950801
Subject(s) - polyamide , chemistry , dimethylacetamide , condensation polymer , pyridine , polymer chemistry , dimethyl sulfoxide , diamine , dimethylformamide , glass transition , polymer , organic chemistry , solvent
Aromatic polyamides were synthesized by the low‐temperature solution polycondensation of 9,10‐dihydro‐9,10‐ o ‐benzeno‐1,5‐anthracenediamine (2,7‐triptycenediamine) with aromatic diacyl dichlorides. All the polycondensations proceeded in quantitative yields. The obained aromatic polyamides have high inherent viscosities (ca. 1,04–3,24 dL/g). They are soluble in various organic solvents such as 1‐methyl‐2‐pyrrolidone (NMP). The polyamides show high glass transition temperatures ( T g ≈ 337–370°C) and high decomposition temperatures (ca. 446–486°C at 5% weight loss). In particular, the polyamide prepared from the diamine and 4,4′‐sulfonyldibenzoyl dichloride not only was soluble in dimethyl sulfoxide, N,N ‐dimethylformamide, hexamethylphosphoric triamide, NMP, N,N ‐dimethylacetamide and pyridine, but also showed high T g (370°C).