| abstract |
The present invention relates to a polymer fiber made of a polyamide composition comprising a semi-crystalline semi-aromatic polyamide (PPA), wherein the PPA consists of repeat units derived from—aromatic dicarboxylic acid comprising at least 80 mole % of terephthalic acid, relative to the total amount of aromatic dicarboxylic acid and—diamine comprising at least 5 mole % of a first diamine and at least 5 mole % of a second diamine relative to the total amount of diamine; and—0-5 mole % of other monomeric units, relative to the total amount of aromatic dicarboxylic acid, diamine and other monomeric units, wherein the PPA has a melting temperature (Tm) of at least 310° C. measured by the DSC method according to ISO-11357-1/3, 2011 and with a heating rate of 10° C./min. |