Linear ester amide polymer was made by polymerizing, melt spinning and cold drawing process from 400g. of β-hydroxy ethyl ammonium sebacate. Mechanical and physical properties were studied and the following results were obtained.
Drawn fiber was not coloured and lustrous monofilament of 30_??_40 denier. An X-ray diffractive examination of drawn specimen showed a fibrous pattern. The break strength and wet-dry ratio of break strength were 2.87g/denier and 64% respectively. The elongation of drying state was 10_??_25%. The density at 20°C was approximately 1.12. The melting point was 115°C. The moisture contents at R. H. 65% of the drawn and of the undrawn fiber were 1.3 and 1.5% respctively. And a noticeable decrease of mechanical strength after 1 year was observed.
It may be concluded therefore that from the industrial view the fibre has no significant value due to its low melting temperature.