文献类型：期刊文献

英文题名：Ultrasound-Assisted Removal of Unfixed Dyes on Polyurethane Fibers as an Efficient Strategy for Improving the Washing Fastness of Polyester/Spandex Elastic Fabric

作者：Pan, Si-Hui[1];Qian, Hong-Fei[2]

机构：[1]Shaoxing Univ, Yuanpei Coll, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing 312000, Peoples R China

年份：2024

卷号：25

期号：3

起止页码：997

外文期刊名：FIBERS AND POLYMERS

收录：SCI-EXPANDED(收录号：WOS:001168923400001)、、EI(收录号：20240815595232)、Scopus(收录号：2-s2.0-85185274044)、WOS

基金：We are grateful for the financial support provided by the National Natural Science Foundation of China (21376149).

语种：英文

外文关键词：Ultrasound; Removal of unfixed dyes; Polyurethane fibers; Polyester/spandex fabric; Washing fastness

外文摘要：To improve the fastness properties of disperse dyes on polyester/spandex blend fabric, ultrasound was applied during the post-clearing process to assist in the removal of unfixed dyes on polyurethane fibers. The blend fabrics were pre-dyed with C.I. Disperse Brown 1, which was found to be able to severely stain spandex component in previous studies. The dyed blends were treated via an ultrasound-assisted clearing process, with varied frequency, temperature, and time, to optimize the clearing conditions. Three methods were compared in terms of the removal degree of unfixed dyes on polyurethane materials, which include the normal reduction clearing by mechanical oscillation and ultrasonic reduction clearing with or without the addition of auxiliaries. Scanning electron microscopy was used to observe the degree of dye aggregation on the surface of treated or untreated polyurethane fibers. The staining degree on polyurethane fibers decreased significantly with increasing ultrasonic frequency, temperature, and time. The addition of polyoxyethylene-type nonionic surfactants to the ultrasound-assisted reduction clearing could enhance the removal of dyes on polyurethane fibers. Polyester/spandex fabric samples were dyed with high-energy disperse dyes (in the three primary colors), and the optimized ultrasound-assisted reduction clearing process was applied to evaluate the washing fastness properties.