Performance characteristics of a soil-release finish on polyester knit fabrics Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/9w032605g

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  • The main objectives of this study were to determine if the manufacturer's claims for a soil-release-finished fabric were true and to determine if the finished fabrics were satisfactory from the consumers' point of view. Differently colored (white, blue and yellow) blouses constructed from soil-release-finished polyester knit fabrics and comparable unfinished polyester knit fabrics were worn by six women for 24 wearings each. For comparison purposes, test specimens cut from each fabric were laundered but not worn, and test specimens were neither worn nor laundered, but were used as controls. The participants in the wear study found that the soil-release-finished blouses were more comfortable to wear in terms of temperature and water-carrying properties than the unfinished blouses. The white test specimens after 24 launderings had the greatest change in color as perceived by consumers. Reflectance readings found this to hold true for the soil-release-finished fabrics, but showed that the greatest change in color for the unfinished fabrics occurred with the color yellow. The greatest change in color for the blouses as perceived by consumers was for the color blue. This was consistent with the reflectance readings. Consumers would accept a change in color if it were uniform within the garment more readily than they would if the two pieces were in one garment. From reflectance readings it was found that there was a difference in color on the original fabrics due to the soil-release finish. There were indications that the soil-release-finished blouses had a greater tendency to pill than the unfinished blouses. Consumers rated the blouses made from the soil-releasefinished fabrics as having better soil-release than the unfinished blouses. Artificially soiled soil-release-finished specimens had considerably less soil build-up after laundering than the unfinished sample. There was no soil redeposited during laundering on the soilrelease- finished fabric. There was a loss of durable press appearance due to the soilrelease finish. Residual shrinkage occurred through the entire 24 launderings with the exception of the white fabrics (warp knit construction) in the course direction. The amount of dimensional change would be considered acceptable for all fabrics tested. From electron micrographs, distinct differences in the surfaces of the unfinished and soil-release-finished fibers were found. The soil-release-finished fibers had very etched surfaces compared to smooth surfaces for the unfinished fibers. Based upon the findings of this study it can be concluded that the soil-release-finished polyester knit fabrics would be acceptable from the consumers' point of view.
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