Study on the Recovery of Waste Wool by Combining Reduction and Metallic Salt Methods

Abstract:

In this paper, NaHSO₃/LiBr/SDS dissolution system was used to deal with waste wool to prepare non-toxic stable keratin solution with higher dissolving rate and higher molecular weight. Effects of component use levelspH valuereaction temperature and reaction time were critically investigated in detail. Based on the above results, the optimal reaction conditions were obtained. That is, 94 % wool dissolution rate (WDR) and 50.2% keratin extraction rate (KER) reached under the best conditions (NaHSO₃: 0.5 mol/L, LiBr: 0.1 mol/L, SDS: 0.02 mol/L, temperature: 90°C, reaction time: 4 h, pH=12). IR spectra showed that the extracted keratin from solution system with the addition of LiBr was dominated by a-helical conformation, which can be used as textile materials or to develop novel functional fibers.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 551-555
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.551
• Online since: January 2014
• Authors: Chun Hui Zeng, Qi Lu
• Keywords: Infrared Spectroscopy Analysis, Metallic Salt Method, Reduction Method, Wool Keratin

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