Fiber modification technology plays a vital role in the production of Pure Cotton Denim Fabric. It uses a series of chemical or physical means to accurately adjust the inherent properties of cotton fibers, thereby giving pure cotton denim better performance and appearance.
Background and significance of fiber modification technology
Pure cotton denim is deeply loved by consumers for its unique texture and wearing comfort, but it also has some limitations, such as easy wrinkling, limited wear resistance, and excessive moisture absorption in certain environments. The fiber modification technology was developed to address these problems. It aims to improve the overall performance of pure cotton denim by changing the internal structure or surface properties of cotton fibers to meet a wider range of market needs and consumer preferences.
Application of fiber modification technology
Chemical modification
Graft copolymerization: By grafting functional monomers onto the molecular chain of cotton fibers, new functional groups or polymer segments are introduced to improve the hygroscopicity, wrinkle resistance, antibacterial properties, etc. of cotton fibers. For example, the introduction of polyester or polyamide segments can enhance the wear resistance and wrinkle resistance of cotton fibers.
Cross-linking treatment: Use cross-linking agents to form chemical bonds between cotton fiber molecules to increase the rigidity and dimensional stability of the fibers. This treatment can reduce the shrinkage and deformation of denim during washing and improve the shape retention of clothing.
Surface modification: Coat the surface of cotton fibers with one or more layers of functional substances, such as nanoparticles, silicone, etc., to improve the waterproof, anti-fouling, and UV resistance of the fibers. This treatment not only retains the comfort of cotton fibers, but also gives denim more functionality.
Physical modification
Tensile deformation: Plastic deformation of cotton fibers by mechanical stretching increases their elongation and recovery. This treatment can make denim fit the body better during wearing and reduce the generation of wrinkles.
Plasma treatment: Use high-energy particles of plasma to bombard the surface of cotton fibers, triggering a series of chemical reactions, thereby changing the surface structure and properties of the fibers. Plasma treatment can improve the wettability, dyeability, and adhesion of cotton fibers, providing a better foundation for subsequent processing.
Ultrasonic treatment: The cavitation effect and micro jet generated when ultrasonic waves propagate in liquid can destroy the wax layer on the surface of cotton fibers, increase the specific surface area and porosity of the fibers, and thus improve their hygroscopicity and breathability.
Improvement of the performance of pure cotton denim by fiber modification technology
Enhanced wrinkle resistance: The modified cotton fibers have higher rigidity and elastic recovery rate, making pure cotton denim less likely to wrinkle after wearing and washing, and maintaining the flatness and beauty of the clothing.
Improved wear resistance: The modified treatment increases the strength and wear resistance of cotton fibers, making pure cotton denim less likely to break during long-term use and friction, and extending the service life of the clothing.
Functional expansion: By introducing different functional monomers or treatment agents, pure cotton denim can be given multiple functions such as waterproof, antifouling, antibacterial, and UV protection to meet consumers' diverse needs for clothing.
Improved environmental protection: The use of environmentally friendly materials and processes in the modification process reduces the use of chemical substances and wastewater discharge, which helps to achieve green production of pure cotton denim.
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