Tianzhu fiber: excellent performance and promising prospects

Tianzhu fiber is a regenerated cellulose fiber made from bamboo, which is abundant in the Land of Abundance, through special high-tech processing to extract the cellulose in the bamboo, and then through processes such as glue making and spinning. , soy protein fiber, chitin fiber and other products, it is a new type of textile raw material. It has soft hand feel, good drape, excellent moisture absorption and release properties, bright dyeing and other characteristics, especially unique antibacterial, bacteriostatic, UV protection and It is easy to biodegrade and does not cause pollution to the environment, making it widely used in the textile field. Through the industrial promotion of this fiber and its products, its good spinnability and wearability have produced greater social benefits and significant economic benefits.

1. Characteristics of Tianzhu fiber

Due to the different properties and processing techniques of bamboo, Tianzhu fiber has some characteristics that are different from other fibers.
　1． It has good hygroscopicity and air permeability
The hygroscopicity of fiber is related to the functional group and structure of the polymer. Although natural cellulose and regenerated cellulose have the same number of hydroxyl groups, regenerated cellulose has fewer hydrogen bonds between macromolecules. , so its hygroscopicity is greater than that of natural fibers. Bamboo fiber is a regenerated cellulose fiber with a porous network structure. Its hygroscopicity and breathability are better than other viscose fibers, giving people a cool and wicking feel. Feel.
　2. Higher initial modulus, resistance to pilling and wrinkles.
The initial modulus can be used to indicate the rigidity of the fiber. The value of the initial modulus depends on the chemical properties of the polymer and the strength of the interaction between macromolecules. The greater the flexibility of the macromolecule chain, the better the fiber. It is easy to deform. The greater the initial modulus value of fibers made from the same polymer, the greater the intensity of the interaction between molecules, and the greater the crystallinity and orientation of the fiber. The crystallinity of Tianzhu fiber is 40%, while The crystallinity of ordinary viscose fiber is 30%,
　3. Natural antibacterial, antibacterial and UV protection
During the growth process, bamboo is free from insects, insects and corrosion. It has good self-protection in nature. Other plants include asphalt-bearing cypress trees and aloe vera. , licorice, cloves, etc., indicating that bamboo itself has natural antibacterial and bacteriostatic substances and can resist external pests and diseases. This substance is found in very small amounts in bamboo. We call it “bamboo quinone” and use it in the production process. The patented technology allows it to remain in the bamboo fiber without being damaged, making it antibacterial and bacteriostatic. It has been confirmed by the Japan Textile Inspection Association that it has good antibacterial properties, preventing the growth of bacteria and cutting off the passage of bacteria. The transmission route of clothing is also tested by the Shanghai Institute of Physics, Chinese Academy of Sciences, and it has been proven that the transmittance of bamboo fiber fabrics to ultraviolet rays of 200-400nm is almost zero. It can be seen that bamboo fiber fabrics have a good shielding effect on ultraviolet rays, thus ensuring The human body is not harmed by ultraviolet rays, especially as the hole in the ozone layer in the atmosphere becomes larger and larger, more and more ultraviolet rays will pass through, causing more serious damage to the human body. The particularity of Tianzhu fiber ensures the health of the human body, which is even more significant.
4. Better dyeing uniformity
Tianzhu fiber has a porous network structure that can instantly swell in water, allowing reactive dyes, which are extremely water-soluble and small molecules, to be quickly adsorbed on Tianzhu fiber, and can quickly diffuse in Tianzhu fiber, has a high initial dyeing rate and a short half-dyeing time. Due to the high diffusion rate of reactive dyes in Tianzhu fiber, it also gives it good permeability and level dyeing properties. Structural characteristics: the adsorbable area of reactive dyes increases, and the absolute number of multi-layer physical adsorption formed by hydrogen bonds and van der Waals forces between reactive dyes and Tianzhu fibers increases. Therefore, its equilibrium dye uptake percentage is higher. On the premise of high dye uptake percentage Under the condition, the number of reactive dyes participating in the bonding reaction with Tianzhu fiber increases, giving a higher color fixation rate. Therefore, Tianzhu fiber reactive dye has excellent dyeing performance, with a high equilibrium dyeing percentage, short half-dyeing time, and bright color. Bright color, good level dyeing, high color fixation rate and excellent fastness.
5． Not resistant to acid and alkali
In cellulose macromolecules, the glucosidic bonds connecting the basic links have little stability to acid. In addition, due to the structural characteristics of Tianzhu fiber, the stability to inorganic acids is smaller than that of viscose fiber. When the temperature rises, the destructive effect of acid is particularly strong. The swelling and dissolving effect of Tianzhu fiber in alkali is strong. Under the same conditions, the permeability of alkali to Tianzhu fiber is greater than that of ordinary viscose fiber. Therefore, although Tianzhu fiber has a higher degree of crystallinity It is higher than ordinary viscose fiber, but its structure is porous, resulting in poor alkali resistance.
6． Strong heat resistance
Ordinary viscose fiber has higher heat resistance, and it is higher than cotton. The heat resistance of Tianzhu fiber is better than ordinary viscose fiber.
7. Biodegradability
Under normal temperature conditions, Tianzhu fiber and its textiles are very stable, but under certain environments and conditions, Tianzhu fiber can decompose into carbon dioxide and water. The degradation methods are:
(1) Garbage disposal: Cellulose is burned to generate CO2 and H2O, which causes no pollution to the environment.
(2) Land burial and degradation: Microbial nutrients in the soil activate the soil, enhance soil strength, and degrade after 8-10 months.
(3) Degradation in activated sludge: Mainly through the presence of a large number of bacteria, cellulose is decomposed.

Two, Tianzhu fiber spinning and its application in various fields

The Tianzhu fiber varieties produced by a chemical fiber Co., Ltd. in Hebei include cotton, medium-length and wool types. Special varieties can be produced according to user needs. After a survey of more than 80 domestic and 6 foreign textile companies, Tianzhu The fiber can be spun purely with a count of 10-45, or blended with other fibers to improve the fabric’s feel and dyeing performance. At the same time, the fabric does not lose its antibacterial and UV protection properties. Practice has proven that it is necessary to adjust the humidity, spinning speed, and twist of spinning yarn. Some textile companies make Tianzhu fiber into non-woven fabrics and wrapped yarns, which are used in gauze bandages and denim to further expand the application fields.
　1． Woven textile fabrics
Taking advantage of the fiber’s characteristics of high initial modulus, wear resistance and bright color, some fabrics with good stiffness and drape are developed.
　2. Knitted sweater underwear
Based on the natural antibacterial, hygroscopic and breathable properties of the fiber, we develop various circular knitting, flat knitting and rib knitting products.
　3． Medical Hygiene
Due to the natural antibacterial and bacteriostatic properties of Tianzhu fiber, it can be used to produce hospital nurse uniforms, surgical gowns, masks, gauze, bandages, patient bed quilts, etc., which can effectively prevent the spread of germs.
4． Decoration, daily use
Tianzhu fiber can also be used to produce various decorative items, such as carpets, mats, toys, towels, bath towels, bed sheets, quilt covers, curtains, car seat cushions, etc.

3. Further functionalization of Tianzhu fiber

　1． Far-infrared bamboo fiber: Using pre-spinning injection blending spinning method, nano-scale far-infrared powder is added to the viscose. As the spinning takes shape, the powder is evenly distributed in the inner layer and surface of the fiber, and the inner layer is not affected by Effects of sun exposure and washing, with permanent far-infrared emission function. By applying the thermal effect and health care function of this fiber, it can be made into underwear, socks, bedding, and winter clothing.
　2. Negative oxygen ion Tianzhu fiber uses additives to give Tianzhu fiber special functions. It uses the characteristics of negative oxygen ions to deodorize and produce negative oxygen ions. In addition to the characteristics of Tianzhu fiber itself, it is more suitable for household products, winter clothing, and decorative items. Medical hygienic and filling, giving people a comfortable feeling.
　3. Aromatic Tianzhu Fiber: Composite spinning method is used to reduce the loss of fragrance to a minimum, and the fragrance agent is distributed inside the fiber and slowly released, with a long-lasting fragrance. It is used in women’s products, household products, and decorative products to give people a fragrance. It has an overflowing feeling and can also achieve the effect of repelling insects.

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