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Negative oxygen ion biomass-based fiber and preparation method thereof

A technology of negative oxygen ions and biomass, applied in the chemical characteristics of fibers, cellulose/protein conjugated rayon, wet spinning, etc., can solve the problems of poor mechanical properties of negative oxygen ion composite fibers, and achieve excellent negative oxygen Effects of ion release and mechanical properties, good distribution, simple operation

Pending Publication Date: 2022-07-22
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of poor mechanical properties of the above-mentioned negative oxygen ion composite fiber, the present invention provides a negative oxygen ion biomass-based fiber and a preparation method thereof. The negative oxygen ion biomass-based fiber has excellent negative oxygen ion release performance and can Durability and good mechanical properties

Method used

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  • Negative oxygen ion biomass-based fiber and preparation method thereof
  • Negative oxygen ion biomass-based fiber and preparation method thereof
  • Negative oxygen ion biomass-based fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Soak wood fiber in 2.5M NaOH and 0.4M Na at 80°C 2 SO 3 In the mixed solution of 12h, filtered, and then washed with deionized water to remove lignin and hemicellulose to obtain lignocellulose;

[0035] 2. Add 100 g of completely delignified lignocellulose, 1 g of tourmaline and 100 g of sodium alginate into 5000 mL of deionized water, and transport it to a rubber mill for wet grinding for 12 hours to prepare a cellulose composite suspension;

[0036] 3. Put the suspension into a syringe and squeeze in 0.1mol / L CaCl 2 Single lignocellulose fibers were prepared in the coagulation bath. The extrusion rate (1 mL / min) was controlled by an air pump with a pressure of about 12.5 psi. After the flow rate is stable, collect the uniform gel fibers, soak them in the coagulation bath for about 10 minutes, and then wash the surface Ca with deionized water. 2+ . A single fiber is shown as figure 1 It can be seen from the figure that after wet spinning, the lignocellulosic f...

Embodiment 2

[0039] 1. Soak wood fiber in 10M KOH and 0.01M Na at 60°C 2 SO 3 In the mixed solution of 10h, filter, and then wash with deionized water to remove lignin and hemicellulose to obtain lignocellulose;

[0040] 2. Add 100g of fully delignified lignocellulose, 20g of tourmaline and 200g of sodium alginate into 10,000mL of deionized water, and transport it to a rubber mill for wet grinding for 24h to prepare a cellulose composite suspension;

[0041] 3. Put the suspension into a syringe and squeeze it into a coagulation solution of 0.05mol / L nickel chloride to prepare a single lignocellulose fiber. The extrusion speed (5 mL / min) was controlled by an air pump. After the flow rate is stable, collect the uniform gel fibers, soak them in the coagulation bath for about 30 minutes, and then wash them with deionized water;

[0042] 4. Twist the 3 gel fibers into coarse fibers (18 turns per inch) immediately after stretching, and then stretch and dry at room temperature for 24 hours.

Embodiment 3

[0044] 1. Soak wood fiber in a mixed solution of 5M NaOH and 1M NaClO at 90°C for 15 hours, filter, and then wash with deionized water to remove lignin and hemicellulose to obtain lignocellulose;

[0045] 2. Add 100g of fully delignified lignocellulose, 10g of tourmaline and 150g of sodium alginate into 7500mL of deionized water, and transport it to a rubber mill for wet grinding for 1h to prepare a cellulose composite suspension;

[0046] 3. Put the suspension into a syringe and squeeze it into the coagulation liquid of 1 mol / L ferrous chloride to prepare a single lignocellulose fiber. The extrusion speed (0.1 mL / min) was controlled by an air pump. After the flow rate is stable, collect the uniform gel fibers, soak them in the coagulation bath for about 20 minutes, and then wash them with deionized water;

[0047] 4. Twist the 3 gel fibers into coarse fibers immediately after stretching (1 revolution per inch), and then stretch and dry at room temperature for 24 hours.

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Abstract

The invention discloses a negative oxygen ion biomass-based fiber and a preparation method thereof.The preparation method comprises the following steps that S1, lignocellulose, tourmaline and sodium alginate are mixed and subjected to wet grinding, and turbid liquid is obtained; and S2, extruding the turbid liquid obtained in the step S1 into coagulation bath liquid for solidification to obtain the single negative oxygen ion biomass-based fiber. According to the invention, the tourmaline and the fiber surface are riveted through hydrogen bonds, so that good distribution of the tourmaline is realized, agglomeration of the tourmaline is avoided, the specific surface area is larger, and more negative oxygen ions can be released. Through the self-assembly effect of the slurry in wet spinning, the lignocellulose is arranged along the fluid direction to form an oriented structure, so that the stress of the fiber is dispersed in the stress process, the tensile deformation in the tensile process is increased, meanwhile, the interface friction of the sodium alginate, the tourmaline and the lignocellulose further dissipates the energy, and the tensile strength of the fiber is improved. And finally, the mechanical property is improved.

Description

technical field [0001] The invention relates to textile raw materials, in particular to a negative oxygen ion biomass-based fiber and a preparation method thereof. Background technique [0002] The excellent ecological environment and health care functions of forests have well met the needs of those who have experienced the urban heat island effect and environmental pollution and are eager to return to nature. The unique microclimate of forests stems from the negative oxygen ions (called "air vitamins") released by plants, which promote air ionization and are widely used in indoor air purification, including removal of airborne particulate matter, oxygenolysis of volatile organic compounds, and Bacteriostatic effect, has been shown to benefit both the physical and mental health of humans and other animals. [0003] Using wearable textiles to create unique forest microclimates has been recognized as one of the most promising strategies for introducing healthy functionality i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/18D01F1/10D01D5/06
CPCD01F8/02D01F8/18D01F1/10D01D5/06
Inventor 陈逸鹏张佳宜党宝康孙庆丰
Owner ZHEJIANG FORESTRY UNIVERSITY
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