1 Concept and characteristics of artificial cotton
What is artificial cotton?
Rayon is the common name for viscose fiber. Viscose fiber refers to α-cellulose extracted from cellulose raw materials such as wood and plant stalks, or man-made fiber made from cotton linters, processed into spinning solution, and then wet-spun.
Characteristics of artificial cotton
The characteristics of artificial cotton are good dyeability, brightness and fastness High, comfortable to wear, resistant to dilute alkali, and hygroscopicity close to cotton. The disadvantages are that it is not acid-resistant, has poor resilience and fatigue resistance, and has low wet mechanical strength. It can be spun purely or blended with chemical fibers such as polyester.
2 Concepts and characteristics of pure cotton
What is pure cotton?
Pure cotton fabric is a textile made of cotton as raw material and made of warp and weft yarns intertwined vertically and horizontally through a loom. Currently, according to the actual source of processed cotton, it is divided into native cotton fabrics and recycled cotton fabrics.
Characteristics of pure cotton
1) Cotton fiber has better quality Hygroscopicity
Under normal circumstances, cotton fiber can absorb moisture from the surrounding atmosphere, and its moisture content is 8%—10%, so when the human skin comes into contact It feels soft and comfortable. If the humidity of the cotton fiber increases and the surrounding temperature is high, all the moisture in the cotton fiber will evaporate. Keeping cotton fabrics horizontal also makes people feel comfortable.
2) Pure cotton fabric has good heat resistance
At the same time, when the temperature is below 110 degrees Celsius, It will only cause the water on the fabric to evaporate and will not damage the fiber. Therefore, cotton fiber can be used at room temperature and washing will not affect the fabric. Its heat resistance also improves the durability and washability of cotton fabrics.
3) Cotton fiber has strong resistance to alkali
In an alkali solution, cotton fiber The fiber will not be damaged, which reflects the alkali resistance of cotton fiber. Therefore it facilitates the washing and disinfection of contaminated impurities after use.
4) Cotton fiber also reflects hygienic properties
Cotton fiber is a natural fiber. The ingredients are natural elements and a small amount of waxy substances, nitrogen-containing substances, and pectin. After testing and practice, cotton fiber has no irritation or side effects when it comes into contact with the skin. It is beneficial and harmless to the human body with long-term use, and its hygienic performance is good.
3 Eight major differences between artificial cotton and pure cotton
The appearance of artificial cotton is very similar to cotton. The difference is mainly based on the following points:
Smoothness
Artificial cotton cloth, the cloth surface is smooth , there are very few yarn defects, no impurities, clean and smooth; while cotton shells, impurities, etc. can be seen on the surface of cotton cloth, and the smoothness is not as good as artificial cotton cloth.
Yarn count evenness
The yarn count of artificial cotton cloth is even and has few yarn defects. ; The yarn count of pure cotton cloth is not as uniform as that of artificial cotton, especially for medium-coarse cloth.
Feel
Man-made cotton fabrics, whether thick or thin, are mostly soft to the touch, while cotton fabrics are slightly thicker. Hard feeling.
Color
Man-made cotton cloth has good luster and color. Compared with cotton cloth, artificial cotton cloth More colorful and beautiful.
Wrinkling properties
Man-made cotton cloth wrinkles easily. When you hold a handful of cloth with your hands, it will spread out. , there will be many wrinkles and it is not easy to recover in time. Although cotton cloth has wrinkles, it is lighter than artificial cotton.
Drapability
Artificial cotton has better drape, while cotton has less drape than artificial cotton.
Strength
The strength of artificial cotton cloth is lower and not as good as cotton cloth, especially in humid environment The fastness of artificial cotton is poor. When it is drawn from the edge of the cloth and stretched, artificial cotton is easier to break than cotton. Therefore, the texture of artificial cotton is mostly thicker and not as light and thin as pure cotton and linen yarn.
Burn
Artificial cotton burns quickly when close to the flame, just like when we burn plastic, it will appear black Smoke and curls melt, and the lower the cotton content, the stronger the gummy texture. Cotton is close to the flame and does not shrink or melt. When exposed to flame, it burns rapidly with orange flame and blue smoke. Leave the flame and continue burning. The burning paper will produce less odor and ash, which will appear in a linear shape. The ash is soft, light gray, and easily turns into powder when touched.
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