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Antibacterial and antiviral plant fiber prepared from zinc chloride/urea eutectic system as well as method and application of antibacterial and antiviral plant fiber

A plant fiber, zinc chloride technology, applied in plant fiber, biochemical fiber treatment, fiber treatment and other directions, can solve the problems of destroying fiber strength, uneven distribution of zinc ions, not easy reduction, etc., to increase adsorption capacity, antibacterial resistance Virus effect is remarkable, the effect of high adhesion rate

Pending Publication Date: 2022-03-04
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this preparation method has the deficiencies in the following aspects. On the one hand, by soaking the zinc chloride solution and fully washing until there is no free zinc ion in the washing liquid, because the fiber shape is not uniform, this may make the zinc ion distribution inside the cellulose uneven. On the other hand, the zinc ions inside the fiber are not easy to reduce the zinc oxide on the surface of the fiber; moreover, reacting at 80-180°C for 8-36 hours in an alkaline solution with a pH value of 9-12 will damage the fiber. It itself causes serious alkaline hydrolysis, destroying the strength of fibers, etc.

Method used

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  • Antibacterial and antiviral plant fiber prepared from zinc chloride/urea eutectic system as well as method and application of antibacterial and antiviral plant fiber
  • Antibacterial and antiviral plant fiber prepared from zinc chloride/urea eutectic system as well as method and application of antibacterial and antiviral plant fiber
  • Antibacterial and antiviral plant fiber prepared from zinc chloride/urea eutectic system as well as method and application of antibacterial and antiviral plant fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] A method for preparing antibacterial and antiviral plant fibers with zinc chloride / urea eutectic system, comprising the following steps:

[0074] (1) Weigh 30 grams (dry mass) of bleached spruce softwood chemical pulp, add 970 mL of deionized water to make the concentration 3%, soak for 4 hours at a temperature of 20 ° C, then add 500 mL of deionized water to adjust the fiber concentration Dissociate at a temperature of 20°C with a standard fiber disintegrator, and rotate the propeller at 20,000 revolutions, so that the plant fibers are evenly dispersed into a single fiber state.

[0075] (2) The decomposed plant fiber obtained in step (1) is concentrated to a concentration of 10% with a Buchner funnel, placed in a PFI mill for mechanical beating, the beating temperature is 20°C, and the beating concentration is 10%. , the number of beating revolutions is 20,000 rpm, and the beating degree of the plant fiber after beating is 80.4°SR, thereby obtaining the plant fiber wi...

Embodiment 2

[0082] A method for preparing antibacterial and antiviral plant fibers with zinc chloride / urea eutectic system, comprising the following steps:

[0083] (1) Weigh 30 grams (absolutely dry mass) of bleached hardwood pulp chemical pulp, add 1470 mL of deionized water to make the concentration 2%, soak at a temperature of 20 ° C for 6 hours, and then use a standard fiber disintegrator at 20 ° C The dissociation is carried out at a certain temperature, and the rotation speed of the propeller is 20,000 revolutions, so that the plant fibers are evenly dispersed into a single fiber state.

[0084] (2) The decomposed plant fiber obtained in step (1) is concentrated to a concentration of 10% with a Buchner funnel, placed in a PFI mill for mechanical beating, the beating temperature is 20°C, and the beating concentration is 10%. , the number of beating revolutions is 30,000 rpm, and the degree of beating of the plant fiber after beating is 84.4°SR, thereby obtaining the plant fiber with...

Embodiment 3

[0091] A method for preparing antibacterial and antiviral plant fibers with zinc chloride / urea eutectic system, comprising the following steps:

[0092] (1) Weigh 30 grams (dry mass) of bleached hardwood pulp chemical pulp, add 1470 mL of deionized water to make the concentration 2%, soak at a temperature of 30 °C for 6 hours, and then use a standard fiber disintegrator at 30 °C The dissociation is carried out at a certain temperature, and the rotation speed of the propeller is 30,000 revolutions, so that the plant fibers are evenly dispersed into a single fiber state.

[0093] (2) The decomposed plant fiber obtained in step (1) is concentrated to a concentration of 10% with a Buchner funnel, and placed in a Jokro mill for mechanical beating. The beating temperature is 30° C., and the beating concentration is 10%. , the number of beating revolutions is 40,000 rpm, and the degree of beating of the plant fiber after beating is 89.8°SR, thereby obtaining the plant fiber with a di...

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Abstract

The invention relates to the field of natural high polymer materials, and discloses an antibacterial and antiviral plant fiber prepared from a zinc chloride / urea eutectic system and a method and application thereof. The method comprises the following steps: mixing zinc chloride and urea, heating and melting to obtain a zinc chloride / urea eutectic system, cooling, sequentially adding water and fibrillated plant fibers, heating for reaction, and filtering and washing to obtain the nano-zinc oxide coated antibacterial and antiviral plant fibers. The method is simple in preparation process, easy to operate and low in energy consumption, the plant fibers are good in antibacterial and antiviral performance, the bacteriostasis rate of the plant fibers to escherichia coli, staphylococcus aureus and candida albicans is larger than 99.9%, and the antiviral activity value (Mv) of the plant fibers to influenza A H1N1 viruses is larger than 3.0. The additional value of the plant fiber is improved, and the application of the plant fiber in the fields of spinning, medical treatment, food packaging and the like is promoted.

Description

technical field [0001] The invention relates to the field of natural polymer materials, in particular to an antibacterial and antiviral plant fiber prepared from a zinc chloride / urea eutectic system, a method and application thereof. Background technique [0002] Plant fiber is a natural polymer material, which is a renewable resource. It is widely used in papermaking, medical treatment, textile and other industries. For example, it is used in the medical industry to make medical protective equipment such as hemostatic cotton, bandages, gauze, and masks. With the development of modern medical technology and concepts, people have more and more functional requirements for medical protective products and materials, such as antibacterial, anti-virus, anti-radiation, anti-chemical toxic substances, absorbable, high trauma treatment performance, etc., so that it has The demand for medical protective materials with antibacterial and antiviral functions has surged. [0003] At pres...

Claims

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Application Information

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IPC IPC(8): D06M11/44D06M101/04
CPCD06M11/44D06M16/00D06M2101/04
Inventor 曹石林林嫦妹马晓娟王俊
Owner FUJIAN AGRI & FORESTRY UNIV
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