从离子液体溶液中制备高韧纤维素纤维纺织品

High tenacity textile cellulose fibers from ionic liquid solutions

开发出一种新型非咪唑基离子液体。将其作为溶解纤维素的溶液,应用于干喷湿法制备Lyocell型纤维素纤维,不但可显著降低温度,还可减少能耗和纤维素的降解。制得的纤维具有很高的力学性能,超过目前商业化的人造纤维素纤维。由于是采用纤维素制得的,这种纤维因此而被命名为Ioncell-F。采用该纤维制作相应的服装和纺织品试样,用以评估这类新型溶液纺丝工艺的潜力。一系列纤维素溶质包括低度精制的纤维素纸浆及废弃材料都可溶解于该离子液体中,这使得废料更易回收,促进了资源的循环利用。Ioncell-F的力学性能达到了增强(生物)复合材料或生物基碳纤维前驱体的水平,显示出广阔的应用前景。

A noel non-imidazolium based ionic liquid has been identified as very good cellulose solvent to spin fibers in a Lyocell-type dry-jet wet spinning process.The spinning temperatures are markedly lower which reduces both energy consumption and cellulose degradation.The resulting fibers showed high mechanical properties,exceeding those of currently commercially available manmade cellulosic textile fibers.Deriving from Lyocell,the fibers have been called Ioncell-F（ibers）.Demonstrator garments and textile products have been produced to evaluate the potential of the new solvent-based process.In addition,a wide spectrum of cellulosic solutes could be dissolved,including low refined cellulose pulp and waste material.This could open up new opportunities in waste recycling strategies and sustainable resource management.Further,the mechanical properties of the Ioncell fibers show promising prospect for technical applications such as reinforcement structures for（bio）composites or precursor for bio-based carbon fibers.