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The effect of pH on wool fiber diameter and fabric dimensions
journal contribution
posted on 2009-07-01, 00:00 authored by Qing Li, R Brady, Xungai WangWool fabrics are often treated under conditions of varying pH in dyeing and finishing processes. It is known that in air the dimensions of wool fabrics change with the amount of fiber swelling at different regain. In this work, it has been shown that a similar relationship between fiber swelling and fabric dimensions existed in water at different pH values. The diameters of Merino and Corriedale wool fibers in water at different pH values were measured with an OFDA 2000 fiber diameter analyzer, fitted with a specially constructed accessory liquid cell. The results showed that the mean diameters of swollen wool fibers in water varied with pH. Minimum swelling was obtained in the range pH 5-7. It was found that the dimensions of wool fabric in water were dependent on the pH. The changes in fiber diameter in water could be attributed to changes in ionic interactions between charged acid and basic groups in wool protein with variations in pH.
History
Journal
Textile research journalVolume
79Issue
10Pagination
953 - 957Publisher
Sage Publications LtdLocation
London, EnglandPublisher DOI
ISSN
0040-5175eISSN
1746-7748Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2009, SAGE PublicationsUsage metrics
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