期刊
TEXTILE RESEARCH JOURNAL
卷 92, 期 19-20, 页码 3579-3590出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/00405175221086886
关键词
Ramie cellulose fiber; deep eutectic solvent; one-step isolation; reutilization
资金
- National Natural Science Foundation of China [52073051, 51925302, 51873030]
- National Key R&D Program of China [2018YFC2000900]
- International Cooperation Fund of the Science and Technology Commission of Shanghai Municipality [21130750100]
- Shanghai Committee of Science and Technology [19QA1400100]
An effective and environmentally friendly extraction method using deep eutectic solvent (DES) was developed for ramie fiber extraction. The method can remove non-cellulosic components without sacrificing the properties or structure of cellulose. It also allows for the separation of beneficial by-products, contributing to recycling economy and sustainable development.
Ramie cellulose fibers are common natural fibers with high strength and outstanding biodegradability. However, there are interconnected gummy components covering raw ramie, which need to be removed to extract separated fibers. Here, an effective and environmentally friendly extraction approach using deep eutectic solvent (DES) was developed. The whole degumming technique can be completed in a one-step boiling process at 160 degrees C for 2.5 h. This new method exhibited the capability to remove most non-cellulosic contents without sacrificing the physical properties or chemical structures of cellulose in comparison with the traditional alkaline method. Besides, the DES can be reutilized many times while still maintaining sufficient degumming efficiency. Some by-products in the degumming solution, such as lignin and polysaccharides, can be successfully separated, beneficially realizing recycling economy and sustainable development. The DES degumming method provides an alternative and practical method for ramie fiber extraction.
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