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In the textile industry, caustic soda (sodium hydroxide) has an important role in several processes. Here are some of the main applications of caustic soda in textile manufacturing: 1. Mercerization Process: This is a process that involves soaking cotton fibers in a caustic solution of soda. This process makes the fibers stronger, shinier, and better at absorbing the dye. It also improves the texture of the fabric, making it smoother and more durable. 2. Cleaning and Fat Removal (Scouring): Caustic soda is used to remove natural impurities, oils, waxes, and fats found in natural fibers such as cotton, linen, and wool. This process cleans the fibers and prepares them for the dyeing or printing process. 3. Neutralization: After the textile bleaching process, acidic chemical residues are often left behind. Caustic soda is used to neutralize this acid and adjust the pH of the fabric before further steps. 4. Fiber Exfoliation: In the manufacture of synthetic fabrics such as rayon or viscose, caustic soda is used to process wood pulp and convert it into a viscose solution, which is then spun into fibers. Conclusioncaustic soda (sodium hydroxide) plays an important role in the textile industry because of its ability to clean, strengthen, and improve the quality of fibers. It is used in the mercerization process to make the fibers stronger and shinier, as well as in scouring to remove impurities and grease from natural textile materials. In addition, caustic soda also aids in the neutralization and exfoliation of synthetic fibers, making them an essential component in producing high-quality fabrics.  

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