6th International Conference of the Balkan-Physical-Union, İstanbul, Turkey, 22 - 26 August 2006, vol.899, pp.554
The preliminary stretching effect on mechanical properties of natural (wool, hair, and silk) and synthetic polyamide fibres (nylon, capron) and conformational transitions are investigated by using a tensile tester. It is shown that alpha-keratin fibres (wool and hair) show silk-like properties and properties of synthetic polyamide fibres for preliminary extension of 18-24% and 34-38%, respectively.