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Some New Observations on the Effects of Mild Shrinkproofing Treatments on Wool
Fibers
Textile research journal, 1968-08, Vol.38 (8), p.831-842
[Peer Reviewed Journal]
ISSN: 0040-5175 ;EISSN: 1746-7748 ;DOI: 10.1177/004051756803800808
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Title:
Some New Observations on the Effects of Mild Shrinkproofing Treatments on Wool
Fibers
Author:
Makinson, K. Rachel
Subjects:
Continuous
fibers
;
Deformation effects
;
Fibers
;
Folding
;
Sliding
;
Textiles
;
Titanium dioxide
;
Wool
Is Part Of:
Textile research journal, 1968-08, Vol.38 (8), p.831-842
Description:
When wool
fibers
which have been shrinkproofed by either the KMnO4/salt process or a dry chlorination process are examined with the optical microscope, normally, very little effect of the treatment can be seen. However, if they are straightened for the examination, a number of differences between treated and control
fibers
can easily be seen, especially if water is present. The principal effects are that the scales on the treated
fibers
, but not on the untreated, become less prominent as the
fibers
are straightened and that this change is much greater on the side which was the intrados of the crimp curve than on the extrados. Microscopic
observation
of
fibers
sliding on each other or over a diffraction grating also reveals effects of the treatment: the deforma tion of the scales of treated
fibers
is more plastic and less elastic than that of untreated and the sliding of the treated
fibers
is more heavily damped. From these and other observations, the conclusion has been drawn that these treatments degrade the protein inside the scales so that it becomes more viscous and less elastic, particularly when it is swollen by or dissolved in water. The epicuticle appears to be unbroken and still elastic. These results throw some light on the well-known disagreement between different workers about the changes produced in the coefficients of friction of wool fibers by the KMnO 4/salt treatment. 1 In the comprehensive study of crimp recovery by Banbaji et al. [Textile Res. J. 32, 568-572 (1962)], the fiber was allowed to contract slowly and continuously. The observa tions described here refer essentially to discontinuous re covery.
Publisher:
Thousand Oaks, CA: SAGE Publications
Language:
English
Identifier:
ISSN: 0040-5175
EISSN: 1746-7748
DOI: 10.1177/004051756803800808
Source:
Alma/SFX Local Collection
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