ISSN:
1573-8493
Source:
Springer Online Journal Archives 1860-2000
Topics:
Technology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Conclusions By treatment of undried polyphenyleneoxadiazole yarns with concentrated sulfuric acid under isometric conditions, it is possible to raise their strength by 20–30% and their elongation at break 40–50%. The improvement in physicomechanical properties of the yarns which have been treated with acid is caused by a reduction in internal stresses, an improvement in the interlayer packing of the macromolecules fragments, and an increase in the degree of orientation of the macromolecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00543774
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