Influence of pH on hygral expansion, relaxation shrinkage and extensibility of wool fabric

Li, Qing, Brady, P. Rex and Wang, Xungai 2007, Influence of pH on hygral expansion, relaxation shrinkage and extensibility of wool fabric, Fibers and polymers, vol. 8, no. 2, pp. 230-233.


Title Influence of pH on hygral expansion, relaxation shrinkage and extensibility of wool fabric
Author(s) Li, Qing
Brady, P. Rex
Wang, Xungai
Journal name Fibers and polymers
Volume number 8
Issue number 2
Start page 230
End page 233
Publisher Korean Fiber Society
Place of publication Seoul, South Korea
Publication date 2007-03
ISSN 1229-9197
1875-0052
Keyword(s) wool
pH
hygral expansion
relaxation shrinkage
extensibility
fibre science
Summary The standard tests for relaxation shrinkage and hygral expansion of wool fabric take no account of pH. It is shown in this work that the pH of the solution in which wool fabric is relaxed as part of the procedure for measuring dimensional properties has a significant influence on the results. At around pH 4.8, which is close to the isoelectric point of wool, the hygral expansion reaches its greatest value and drops at both lower and higher pHs. A similar relationship between pH and extensibility of wool fabric was observed. Values of relaxation shrinkage were found to be dependant on pH. The reasons for the pH dependence of dimensional properties are discussed and these include changes in wool fiber swelling, yarn crimp and polymer relaxation phenomena with changes in pH.

Language eng
Field of Research 091012 Textile Technology
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007244

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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