Quantifying Wetting and Wicking Phenomena in Cotton Terry as Affected by Fabric Conditioner Treatment

Abstract

To enable the simultaneous determination of both the speed and extent of liquid absorption in cotton fabrics, we have developed a radial, horizontal wicking experiment. The initial part of the absorbed mass versus time profile is linear, which allows us to determine the wicking rate. After a given time, a constant mass is reached, corresponding to the liquid absorption capacity of the fabric. Using the method proposed, we show that a fabric conditioner does not affect the physical characteristics. such as porosity and pore size, and hence the water absorption capacity of cotton terry. On the other hand, there is a pronounced effect on the wicking rate. Based on the experimentally determined values of the contact angle of water on the treated fabrics, the differences in wicking rates as a function of the kind of fabric conditioner can be ascribed to differences in wettability.

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