RECYCLING OF CELLULOSIC TEXTILES
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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A method for recycling textiles comprising cellulose with the following steps of: optionally disintegrating the textile， swelling the cellulose， under reducing conditions， wherein at least one reducing agent is present at least during a part of the swelling， and then performing at least one of the following two bleaching steps in any order: i) bleaching the material with oxygen at alkaline conditions with a pH in the range 9-13.5， and ii) bleaching the material with ozone at acid conditions below pH 6. An advantage is that the yield is improved at the same time as excellent decolourization is achieved. If the recycled material is used in viscose manufacture， the risk of clogging nozzles and so on is reduced. A method for recycling textiles comprising cellulose with the following steps of: optionally disintegrating the textile， swelling the cellulose， under reducing conditions， wherein at least one reducing agent is present at least during a part of the swelling， and then performing at least one of the following two bleaching steps in any order: i) bleaching the material with oxygen at alkaline conditions with a pH in the range 9-13.5， and ii) bleaching the material with ozone at acid conditions below pH 6. An advantage is that the yield is improved at the same time as excellent decolourization is achieved. If the recycled material is used in viscose manufacture， the risk of clogging nozzles and so on is reduced.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
