Premium
Polyamides from 1,4‐cyclohexanebis(ethylamine) and aliphatic dicarboxylic acids
Author(s) -
Ridgway James S.
Publication year - 1974
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.1974.070180520
Subject(s) - ethylamine , polyamide , polymer chemistry , polymer , materials science , glass transition , boiling , dicarboxylic acid , amorphous solid , organic chemistry , chemistry , composite material
A homologous polyamide series of 1,4‐cyclohexanebis(ethylamine) (CBEA) was prepared with C 6 to C 12 linear, aliphatic dicarboxylic acids. Polymer and fiber properties were found to be quite dependent upon the cis and trans structure of the cycloaliphatic ring. Polyamides based on trans ‐1,4‐CBEA had higher melting and higher glass transition temperatures than their cis analogs. In addition, trans polyamides were quite crystalline, whereas the cis polymers were almost completely amorphous. The boiling water shrinkage, tenacity, and moisture regain of the fibers reflected the differences in molecular fit between the cis and trans polyamides.