Abstract
The effect of finishes and laundering on the liquid flow in cotton and polyester-fiber fabrics is investigated. The liquid flow can be categorized into vertical wicking and demand wettability. Since the liquid flow in fibrous materials is affected by the pore size, based on the Washburn equation, the effect of fabric pore size and pore-size distribution was also studied. The presence of the three different finishes (durable-press, stain-repellent, and antistatic) and laundering changed the vertical-wicking and demand-wettability phenomena owing to changes in the surface energy of fibers and/or changes in pore characteristics. However, the results from vertical wicking and demand wettability did not always agree. The vertical-wicking test was more sensitive to finishing treatments and responded in a more predictable way. In general, changes in liquid flow in finished fabrics can be predicted from the surface energy of the fiber in the fabrics and the pore size and pore-size distribution in the fabrics, as ...
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