4.7 Article

Porous, colorful and gas-adsorption powder from wool waste for textile functionalization

期刊

JOURNAL OF CLEANER PRODUCTION
卷 366, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2022.132805

关键词

Wool powder; Formaldehyde adsorption; Ammonia adsorption; Functional fabric; Waste textile; Coloration

资金

  1. Deakin University
  2. Wuhan Textile University (WTU) through the Deakin-WTU Joint PhD Program

向作者/读者索取更多资源

This study explores the utilization of waste wool in a circular context by mechanically transforming it into wool powder for reusing as sustainable additives for textile functionalization. The results show that fabrics coated with wool powder have significantly higher adsorption efficiencies of ammonia and formaldehyde compared to ordinary wool fibers. The reuse of waste wool not only extends the practical applications of waste resources, but also alleviates the negative effect of textile disposal on the environment.
Textile waste is a fast-growing challenge and a large quantity of used textile ends up in landfills and incineration plants, which can pollute the environment through the production of toxic substances and greenhouse gases. This work explores the utilization of waste wool in a circular context by mechanically transforming it into wool powder for reusing as sustainable additives for textile functionalization. A comprehensive investigation was conducted to understand the performance of fabrics coated with wool powder in adsorbing ammonia and formaldehyde based on monitoring their dynamic adsorption behavior using time-resolved infrared spectroscopy. In addition, the application of dyed wool powders as eco-friendly colorants for surface modification of textiles was explored and the performance of the colored powders in gas adsorption was investigated. Compared with ordinary wool fibers, the prepared powders possessed increased surface area, higher surface energy and a more heterogeneous surface. These properties made wool powder an ideal candidate for gas adsorption applications. The adsorption efficiencies of 66% and 62% were achieved in removing ammonia and formaldehyde by coated fabrics, respectively, which are significantly higher than the performance of ordinary wool fibers. Furthermore, the coated polyester fabrics showed an excellent cycling performance for both ammonia and formaldehyde (recovery yield up to 68.1%). The reuse of waste wool for functional modification of fabrics not only extends the practical applications of waste resources, but also alleviates the negative effect of textile disposal on the environment.

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