文献类型：期刊文献

英文题名：Ultrasonic-assisted alkali hydrolysis of polyethylene terephthalate fabric and its effect on the microstructure and dyeing properties of fibers

作者：Pan, Sihui[1];Qian, Hongfei[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：24

期号：1

外文期刊名：AUTEX RESEARCH JOURNAL

收录：SCI-EXPANDED(收录号：WOS:001218312100001)、、WOS

基金：We are grateful to Science Compass, a large Chinese scientific research service institution, for its support in XRD data analysis.

语种：英文

外文关键词：Ultrasound; alkali hydrolysis; polyethylene terephthalate; frequency; microstructure; dyeing properties

外文摘要：In this study, ultrasound energy was applied to assist the alkali hydrolysis of polyethylene terephthalate (PET) fabric, and then, the results were compared with those of the mechanical oscillating method, which was used as the control. The effects of various factors such as the sodium hydroxide concentration, the dosage of dodecyl dimethyl benzyl ammonium chloride (DDBAC), and the frequency on the weight loss of the PET fabrics were systematically investigated. The surface appearance and microstructures of the treated fibers with different methods were analyzed using a scanning electron microscope and X-ray diffraction, respectively. The results showed that DDBAC played a prominent accelerating role in the hydrolysis of the PET polymer, and the frequency had a great influence on the weight loss of the PET fabric. Ultrasound with a frequency of 60 kHz showed a similar decomposition rate as the control, resulting in similar weight loss, which was the highest value among the three frequencies (20, 60, and 80 kHz). In addition, the application of ultrasonic energy led to more pits on the fiber surface, a smaller average grain size, and decreased crystallinity of the treated fibers, while the mechanical oscillating method resulted in slightly increased crystallinity. By comparing the K/S value of the dyed fabrics with two commercial disperse dyes, we found that the treatment method had no obvious correlation with the color depth of the treated fabric.