A Test Method to Determine the Relative Humidity Dependence of the Air Permeability of Woven Textile Fabrics

This paper describes a test method used to determine the relative humidity dependence of the air permeability of hygroscopic woven textile fabrics. Changes in fabric structure as hygroscopic fibers swell at high humidities can have a large influence on the measured air permeability of materials such...

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Bibliographic Details
Published in:Journal of testing and evaluation 1997-07, Vol.25 (4), p.416-423
Main Authors: Gibson, PW, Elsaiid, AE, Kendrick, CE, Rivin, D, Charmchi, M
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Other techniques and industries
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Summary:This paper describes a test method used to determine the relative humidity dependence of the air permeability of hygroscopic woven textile fabrics. Changes in fabric structure as hygroscopic fibers swell at high humidities can have a large influence on the measured air permeability of materials such as cotton, wool, silk, and nylon fabrics. The method is sensitive enough to show sorption hysteresis effects in the relative humidity versus air permeability curve. The instrumentation also permits dynamic measurements during a step change in relative humidity. Typical results are shown for seven fabrics, covering a range of fiber hygroscopic properties and air permeabilities.
ISSN:0090-3973
1945-7553
DOI:10.1520/JTE11878J