The Source: Cellulose Extraction The journey of viscose begins with the procurement of raw cellulose. While technically a subset of viscose production, Lyocell uses a non-toxic amine oxide solvent in a closed-loop system that recycles nearly all chemicals.
Drawing, Finishing, and Cutting Viscose Filaments
This semi-synthetic fiber is derived from cellulose, primarily sourced from wood pulp, which is then chemically transformed into a material that mimics the luxurious feel of silk. As the filaments are drawn up through the acid, the sulfuric acid strips away the sodium sulfate byproduct, regenerating pure cellulose in the form of delicate, continuous threads.
The Final Product: Versatility in Textiles. Sulfuric Acid Spinning The viscose solution, now a thick syrup, is carefully extruded through a spinneret into a bath of dilute sulfuric acid.
Drawing, Finishing, and Cutting Viscose Filaments
The extracted cellulose is first treated with sodium hydroxide (caustic soda) in a process called alkalization. Environmental Considerations and Modern Innovations The traditional method of producing viscose has significant environmental drawbacks, primarily due to the use of toxic chemicals like carbon disulfide and sulfuric acid, which pose risks to worker health and aquatic ecosystems.
More About How is viscose made
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