The difference and characteristics of rayon and cotton
1. Artificial cotton is a common name for viscose fiber.
Viscose fiber refers to α-cellulose extracted from cellulose raw materials such as wood and plant masts, or rayon made from cotton linters as raw materials, processed into spinning dope, and then wet-spun.
2. Pure cotton fabric is made of cotton as raw material, through the weaving machine, the warp and weft yarns are vertically and horizontally suspended and interwoven.
At present, according to the actual processed cotton source, it is further divided into a raw cotton fabric and a recycled cotton fabric.
The appearance of rayon is very similar to that of cotton, and the difference is mainly from the following points:
Artificial cotton cloth, flat cloth surface, very few yarn defects, no impurities, fine and smooth; cotton surface, cotton, shells, impurities, etc., the finish is not as good as rayon.
2. Yarn uniformity
The yarns of the rayon are evenly dried, and the voiles are few; the cotton skein is not as dry as the rayon, especially the medium sized cloth.
Whether the woven cotton fabric is thick or thin, the hand feel is mostly soft, and the cotton cloth has a slightly rough feeling.
The rayon has a good gloss and color, and the rayon is more vivid and beautiful than the cotton.
The rayon is easy to wrinkle. When a cloth is rubbed by hand and spread out, many wrinkles appear, and it is not easy to recover in time. Although the cotton cloth has wrinkles, it is slightly lighter than rayon.
The artificial cotton has a good drape, and the cotton drape is not as good as the artificial cotton.
The strength of rayon is lower than that of cotton cloth, especially in humid environment. The kinile cotton has poor fastness. When it is drawn from the edge of the cloth, the rayon is easier to break than the cotton thread. Therefore, the artificial cotton texture is mostly Thick, not as pure as cotton yarn.
The artificial cotton is close to the flame and burns quickly. Just like we burn plastic, black smoke and curl melt. The lower the cotton content, the stronger the texture. The cotton is close to the flame and does not shrink or melt. In contact with the flame, it burns quickly, the flame is orange, and there is blue smoke.
Leave the flame, continue to burn, burn the paper, taste less ash, and be linear. The ash is soft and light gray, and the hand touches easily into powder.
Characteristics of pure cotton and rayon
A. Cotton features
1. Cotton fiber has good hygroscopicity
In general, cotton fibers absorb moisture into the surrounding atmosphere and have a moisture content of 8% to -10%, so when the skin of the human body comes into contact, it feels soft and comfortable. If the humidity of the cotton fiber increases and the ambient temperature is high, the moisture of the cotton fiber will all evaporate. Keeping the cotton level is also comfortable.
2. Pure cotton fabric has good heat resistance
At the same time, when it is 110 degrees Celsius, it will only cause the water on the fabric to evaporate without damaging the fiber. Therefore, the cotton fiber is used at normal temperature and used at room temperature, and the washing does not affect the fabric. The heat resistance of this also improves the durability and durability of the cotton fabric.
3. Cotton fiber has strong resistance to alkali
In the alkaline solution, the cotton fiber does not break, and the alkali resistance of the cotton fiber is reflected. It therefore facilitates the washing of contaminated and disinfecting impurities after use.
4. Cotton fiber also shows hygiene
Cotton fiber is a natural fiber, its main component is natural pigment and a small amount of waxy substance and nitrogenous substance, pectin, tested and practiced, cotton fiber and skin contact without any irritation and side effects, long-term use is beneficial to the human body , its hygienic performance is good.
B. Characteristics of artificial cotton
The artificial cotton is characterized by good dyeability, high vividness and fastness, comfortable wearing, alkali resistance, moisture absorption and cotton closeness. Disadvantages are poor acid resistance, poor resilience and fatigue resistance, and low wet mechanical strength. It can be purely spun or blended with chemical fibers such as polyester.