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Researchers at Lund University in Sweden have made a significant advancement in textile recycling by developing a novel technique to create new viscose from used cotton sheets. Traditionally, viscose textiles are produced from forest biomass, and fully recycled viscose has not been readily available. The innovative method devised by the team involves converting complex cotton fibers, which contain dyes, protective agents, and contaminants, into viscose fibers commonly found in clothing items like blouses, skirts, and dresses.
This breakthrough not only addresses the environmental impact of discarding old textiles but also reduces the dependence on precious forest resources. The process, led by Edvin Bågenholm-Ruuth and his team, entails immersing textiles in a zinc chloride solution, leading to the conversion of the material into a gel-like substance. By adding water, a dissolving pulp is created, a fluffy white material that serves as a substitute for the wood pulp traditionally used in viscose manufacturing.
This dissolving pulp undergoes further treatment with various chemicals, including a reduced amount of the toxic substance carbon disulphide compared to standard procedures. The resulting viscose fibers demonstrate promising quality, hinting at the potential to transform the textile industry by offering an eco-friendly and cost-efficient alternative.
While the process requires additional fine-tuning, the researchers are optimistic about its commercial feasibility and its ability to promote sustainable textile practices. This breakthrough marks a significant step towards a more environmentally conscious approach to textile production and recycling.