Color Changing Fiber
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Alfa Chemistry -
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since 2024
Description
Photochromic fibers refer to fibers whose color changes reversibly under sunlight or ultraviolet light, etc. Photochromic fibers are prepared by introducing photochromic substances into the fibers. Examples of organic photochromic materials include hydrazones, osazones, semicarbazones, anilines, disulfoxides, succinic anhydride, spiro compounds, and derivatives of stilbene, camphor, and o-nitrobenzyl. Taking spiropyrans (SPs) as an example, their photochromic reaction involves opening of the pyran ring under UV irradiation.
Color Changing Fiber
Features
Thermochromic fibers are fibers whose color changes with temperature. Similarly, thermochromic fibers can be obtained by introducing thermochromic agents into fibers by filling and coating methods. Thermochromic polyvinylidene chloride (PVDC) fiber is a typical representative of this type of fibers.
Applications
- In the commercial field, color-changing fibers are mostly used in sportswear such as mountaineering, skiing, swimming, skating, and life-saving clothing.
- In the field of chemical research, photochromic fibers and thermochromic fibers still hold strong appeal. Introducing new photochromic substances or thermochromic substances into various fibers is one of the key research directions. Jimmy Nguyen et al. formulated liquid crystal (LC) into electrospun fibers to realize thermochromic fibers.
- Experiments show that coaxial electrospinning with LC and solvent in the core can preserve the thermochromic properties of LC, resulting in thermochromic fibers. As shown, the LC in the core was observed to change from red to blue when the fiber was heated.
Frequently Asked Questions
Color changing fibers are a type of fiber with a special composition or structure that can automatically change color when stimulated by external conditions such as light, heat, moisture, or radiation.
Photochromic fibers are fibers whose color changes reversibly under sunlight or ultraviolet light. They are prepared by introducing photochromic substances into the fibers.
Thermochromic fibers are fibers whose color changes with temperature. They are obtained by introducing thermochromic agents into fibers using filling and coating methods.
Color changing fibers are mostly used in sportswear, such as mountaineering, skiing, swimming, skating, and life-saving clothing.
Both the commercial field and chemical research field can benefit, as color changing fibers have applications in sportswear and ongoing research into new photochromic and thermochromic substances.
Thermochromic polyvinylidene chloride (PVDC) fiber is a typical representative of thermochromic fibers.
Thermochromic fibers can be created by formulating liquid crystal (LC) into electrospun fibers. Coaxial electrospinning with LC and solvent in the core preserves the thermochromic properties of LC, resulting in fibers that change color when heated.