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IJFTR Vol.32 [2007] >
IJFTR Vol.32(3) [September 2007] >

Title: Tensile properties of cotton yarns after slack swelling and stretching in presence and absence of sodium hydroxide
Authors: Hebsiba, G Anita
Thambidurai, S
Keywords: Cotton
Packing fraction
Tensile properties
Issue Date: Sep-2007
Publisher: CSIR
IPC CodeInt. Cl.⁸ D06M
Abstract: The properties of ring- and rotor-spun cotton yarns subjected to combined swelling and stretching in presence and absence of aqueous sodium hydroxide (21%w/w) at pre-determined time intervals have been studied. Yarns stretched in the solution exhibit spectacular changes in their properties. The increment in shrinkage values is found to be more in slack swollen rotor-spun yarns as compared to that in ring-spun yarns. Crystallinity values show a decreasing trend with the increase in swelling time. Yarns stretched in solution show a tremendous increase in packing fraction. Tenacity and elongation values show significant increase with the solution stretch. The values of packing fraction, tenacity and per cent elongation are found to be higher in the case of ring-spun yarns. Scanning electron microscopy proves the swellability and packing of fibres in the yarns.
Page(s): 284-289
ISSN: 0971-0426
Source:IJFTR Vol.32(3) [September 2007]

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