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Direct synthesis and melt‐drawing property of aramids by bulk polycondensation of isophthalic acid with m ‐phenylenediamine and 3,4′‐oxydianiline
Author(s) -
Higashihara Tomoya,
Zhang Cenyao,
Tsukuda Akimitsu,
Ochi Takashi,
Ueda Mitsuru
Publication year - 2011
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.35437
Subject(s) - aramid , isophthalic acid , condensation polymer , polymer chemistry , polymer science , materials science , ether , composite material , chemical engineering , chemistry , terephthalic acid , polyester , organic chemistry , polymer , engineering , fiber
The direct polycondensation of isophthalic acid with a mixture of 1,3‐phenylenediamine ( m ‐PDA) and 3,4′‐diaminodiphenyl ether (3,4′‐ODA) could be successfully performed in the bulk to afford the expected co‐aramids for the first time. The co‐aramids with low molecular weights and 3,4′‐ODA contents higher than 50 mol% display excellent thermoplasticity and melt‐drawing property. Indeed, several meters long filaments with 12 μm diameter could be produced. In addition, the environmentally friendly method for the preparation of aramid materials as well as the demonstration of their filament formation will open up the new possibility to prepare aramid fibers. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012