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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 19 | Page No.: 2861-2865
DOI: 10.3923/jas.2007.2861.2865
 
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Gum Tragacanth Fibers from Astragalus gummifer Species: Effects of Influencing Factors on Mechanical Properties of Fibers
Ramin Khajavi, Seyed Hossein Mossavi Pourgharbi, Amir Kiumarsi and Abosayeed Rashidi

Abstract:
Gum Tragacanth (GT) is one of the most widely used natural gum across the globe and it is shown that GT from Asteragalus gummifer can be processed into fiber via alkaline treatment. In this study a complementary description of GT fibers is provided and the effects of influencing factors on properties of GT fibers investigated. Spinning Dope (SD) prepared by adding ribbon type GT of Astragalus gummifer species to alkaline solutions and fibers produced by solution spinning method. The effects of some processing factors including: draft ratio, residence time in coagulation bath, GT concentration in SD, ripening time of SD, kind of coagulant agent and the pH of washing bath on some mechanical properties of GT fibers studied. It was concluded that with increasing the coagulant concentration the mechanical properties of fibers improved, but it caused formation of sheet core structure. ZnCl2 as coagulant agent improved mechanical properties and applying glycerol caused more flexibility in GT fibers, even though their tenacity reduced.
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How to cite this article:

Ramin Khajavi, Seyed Hossein Mossavi Pourgharbi, Amir Kiumarsi and Abosayeed Rashidi, 2007. Gum Tragacanth Fibers from Astragalus gummifer Species: Effects of Influencing Factors on Mechanical Properties of Fibers. Journal of Applied Sciences, 7: 2861-2865.

DOI: 10.3923/jas.2007.2861.2865

URL: https://scialert.net/abstract/?doi=jas.2007.2861.2865

 
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