The ever-increasing importance of vegetable natural fibers on the global scale, the comparatively low production
of this group of fibers, and the growing fiber imports by the Iranian textile industry have required numerous studies in recent
years to be carried out on long natural cellulosic fibers extracted from Typha australis plant leaf. In this study, such tensile
properties of the fiber under study as tenacity, modulus, elongation and work of rupture, X-ray and FTIR are investigated by
alkali retting at 100 oC for 2 and 4 h. It is found that Leafiran is lignocellulosic with a tenacity approximately 25-40 cN. Tex-
1, a linear density of about 4 tex, and a crystallinity of about 60 %, which are all considered to be suitable properties
compared to those of other natural cellulosic fibers.