알칼리 가공을 활용한 폴리에스테르 섬유 염색 연구

Abstract

There is the increasing trend pursuing the textile materials with highly added value and aesthetics by scientific development supplementing the disadvantages of synthetic fiber and applying the advantages of natural fiber. Polyester fiber which has been used a lot as the materials for clothing has a variety of features. However, polyester fiber becomes easily dirty as absorbing dust by static electricity because of low hygroscopic property. A number of researches has been executed to improve such disadvantage. A research improved the fiber surface form to be similar to natural fiber by caustic reduction and made the aesthetics like silk by increasing flexibility, drape property, absorption and texture. Accordingly, this paper aimed to identify the aesthetics by changing the appearance using NaOH as well as analyzed the theoretic background on the caustic reduction of polyester fiber. Furthermore, the difference of dyeing property and color before and after caustic reduction will be identified using ⊿E* value of CIE L*a*b* by the experiment. For the change of appearance after caustic reduction, shrinkage and thickness showed no change, but weight was changed. Higher reduction ratio meant softer texture and more improvement of drape property. The color difference was identified as polyester fiber was dyed into a deep tone in accordance with increase of reduction duration after caustic reduction. The analysis results can be used as the basic data for development of material design using the color difference by dyeing and for improvement of appearance aesthetics by caustic reduction.