Silver oxide antimicrobial viscose fiber and preparation method thereof by in-situ reaction

A technology of viscose fiber and in-situ reaction, which is applied in the direction of artificial filament made of viscose, can solve the problem that it is difficult to prepare antibacterial viscose fiber, and achieve the effect of easy control, small size and favorable industrial production

Active Publication Date: 2014-08-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that it is difficult to prepare antibacterial viscose fiber with excellent performance by directly adding metallic silver and its oxide particles, and provides a method for preparing silver oxide antibacterial viscose fiber by in-situ reaction. The silver oxide prepared by the reaction can be evenly distributed inside the viscose fiber, which can endow the viscose fiber with excellent antibacterial properties without causing a decrease in fiber performance.

Method used

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  • Silver oxide antimicrobial viscose fiber and preparation method thereof by in-situ reaction
  • Silver oxide antimicrobial viscose fiber and preparation method thereof by in-situ reaction

Examples

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Effect test

Embodiment 1

[0029]Mix 200 parts of viscose fiber spinning dope containing 10% α-cellulose and 6% sodium hydroxide with 60 parts of silver thiosulfate concentrate prepared with 32 parts of anhydrous sodium thiosulfate and 6.8 parts of silver nitrate After mixing, the temperature of the stock solution is 30°C, then it is metered and filtered by a metering pump, and then it is sprayed out at a speed of 3m / min from a spinneret with a diameter of 0.2mm. at 55°C, the composition is H 2 SO 4 : 120g / L, Na 2 SO 4 : 260g / L, ZnSO 4 : In a heat preservation coagulation bath of 18g / L, the draw ratio of the spinneret is -50%, the fiber is washed with water, desulfurized, bleached, pickled, oiled and dried to obtain the antibacterial viscose fiber containing silver oxide.

[0030] The linear density of the fiber is 6.92dtex, the breaking strength is 0.83cN / dtex, the breaking elongation is 8.11%, the silver ion content is 92.4mg / g, and the bactericidal rate of Escherichia coli and Staphylococcus aure...

Embodiment 2

[0032] Mix 200 parts of viscose fiber spinning dope containing 8% α-cellulose and 6% sodium hydroxide with 10 parts of silver thiosulfate concentrate prepared with 8 parts of anhydrous sodium thiosulfate and 1.7 parts of silver nitrate After mixing, the temperature of the stock solution is 40°C, and then it is metered and filtered by a metering pump and then sprayed out at a speed of 3m / min from a spinneret with a diameter of 0.05mm. at 40°C, the composition is H 2 SO 4 : 130g / L, Na 2 SO 4 : 340g / L, ZnSO 4 : In a 20g / L heat preservation coagulation bath, the draw ratio of the spinneret is -50%, the fiber is oiled after washing, desulfurization, bleaching, pickling, and dried to obtain the antibacterial viscose fiber containing silver oxide.

[0033] The linear density of the fiber is 0.31dtex, the breaking strength is 1.66cN / dtex, the breaking elongation is 14.67%, the silver ion content is 5.77mg / g, and the bactericidal rate of Escherichia coli and Staphylococcus aureus a...

Embodiment 3

[0035] Mix 200 parts of viscose fiber spinning dope containing 8% α-cellulose and 5% sodium hydroxide with 10 parts of silver thiosulfate concentrate prepared with 32 parts of anhydrous sodium thiosulfate and 6.8 parts of silver nitrate After mixing, the temperature of the stock solution is 10°C, then it is metered and filtered by a metering pump, and then it is sprayed out at a speed of 5m / min from a spinneret with a diameter of 0.05mm, and the fine spinning stream enters a length of 5m and a temperature of at 45°C, the composition is H 2 SO 4 : 110g / L, Na 2 SO 4 : 340g / L, ZnSO 4 : In a heat preservation coagulation bath of 20g / L, the draw ratio of the spinneret is -25%, the fiber is washed with water, desulfurized, bleached, pickled, oiled and dried to obtain the antibacterial viscose fiber containing silver oxide.

[0036] The linear density of the fiber is 1.54dtex, the breaking strength is 2.82cN / dtex, the breaking elongation is 21.33%, the silver ion content is 17.45...

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Abstract

The invention discloses silver oxide antimicrobial viscose fiber and a preparation method thereof by in-situ reaction. The silver oxide in an antimicrobial viscose fiber is generated by the in-situ reaction, wherein the linear density of the fiber is 0.3-7.0 dtex, the breaking strength is 0.8-3 cN / dtex, the breaking elongation is 8-25%, the silver ion content is 5-92 mg / g, the sterilizing rates on escherichia coli and staphylococcus aureus are 92% and 88% above respectively, and the sterilizing rates after washing for 20 times are 85% and 82% above respectively. The silver oxide in the viscose fiber disclosed by the invention is small in particle size, uniform in distribution, and excellent in antimicrobial and mechanical properties, and can be widely applied in the fields such as clothing, decoration, safeguards, architecture and biomedicine. The method disclosed by the invention is to uniformly disperse generated silver thiosulfate in a spinning solution, and then utilize the acidity in a coagulating bath to decompose the silver thiosulfate to obtain the silver oxide with the antimicrobial effect. The method is ingenious in conception, greatly improves the antimicrobial performance of the fiber, and further is mature in technology, simple in process, easy to control and beneficial to industrial production.

Description

technical field [0001] The invention belongs to the technical field of viscose fiber with antibacterial function and its preparation, and in particular relates to a silver oxide antibacterial viscose fiber prepared by in-situ reaction and a method thereof. Background technique [0002] With the rapid development of industrial production and the improvement of people's living standards, people's awareness of environmental hygiene and self-care is increasing. In life, people will inevitably come into contact with various bacteria, fungi and other microorganisms. Under suitable external conditions (such as temperature and humidity), these microorganisms will multiply rapidly and spread diseases through contact, affecting people's health and Normal work, study and life. And all kinds of textiles are often good habitats for these microorganisms and become an important source of disease transmission. After the pathogenic bacteria reproduce in large numbers on textiles, they will ...

Claims

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Application Information

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IPC IPC(8): D01F2/08
Inventor 姜猛进许维星王晓东徐建军叶光斗刘鹏清
Owner SICHUAN UNIV
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