Antibacterial fiber, preparation method of antibacterial fiber and antibacterial product

An antibacterial fiber and aqueous solution technology, applied in the chemical characteristics of fibers, rayon manufacturing, textiles and papermaking, etc., can solve the problems of insufficient particle loading, uneven particle size, and insufficient loading, and achieve excellent antibacterial and bacteriostatic properties. , Combined with strong fastness and lasting effect

Active Publication Date: 2021-12-17
宁波航天米瑞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, currently nano-TiO 2 In the antibacterial fibers made of nano-TiO 2 The particle size is not uniform, and the loading on the fiber is not uniform enough. At the same time, nano-TiO 2 Particle load is not strong enough, poor wash resistance

Method used

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  • Antibacterial fiber, preparation method of antibacterial fiber and antibacterial product
  • Antibacterial fiber, preparation method of antibacterial fiber and antibacterial product
  • Antibacterial fiber, preparation method of antibacterial fiber and antibacterial product

Examples

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preparation example Construction

[0024] The preparation method of the antibacterial fiber provided by the present invention comprises the following steps:

[0025] S1, providing a PVA aqueous solution, wherein the mass fraction of PVA in the PVA aqueous solution is 8%-15%;

[0026] S2, adding nano titanium dioxide particles and a dispersant to the PVA aqueous solution, and performing ultrasonic dispersion to obtain a spinning solution, wherein the mass ratio of the PVA aqueous solution to the nano titanium dioxide particles is 100:1-100:15, The absolute value of the Zeta potential of the spinning solution is 10mV-40mV;

[0027] S3, performing electrospinning on the spinning solution to obtain antibacterial fibers.

[0028] In step S1, the mass fraction of PVA in the PVA aqueous solution (polyvinyl alcohol aqueous solution) is further preferably 10%-12%.

[0029] In step S2, PVA aqueous solution and nano-TiO 2 When the particles are used to prepare the spinning solution, due to the nano-TiO in the spinning ...

Embodiment 1

[0043] Prepare 100 parts by weight of a PVA aqueous solution with a mass fraction of 8%, add 5 parts by weight of nano titanium dioxide particles with a particle size of 20 nm and 0.005 parts by weight of stearic acid, and carry out ultrasonic dispersion at a frequency of 30KHz to obtain the absolute value of Zeta potential 15mV of spinning solution.

[0044]Electrospin the spinning solution. In electrospinning, the advancing speed is 0.3mL / h, the receiving distance is 12cm, the voltage is 10KV and is 1.25 times the mass fraction, the spinning needle is connected to the positive electrode, and the receiving end is connected to the negative electrode. The ultra-fine denier polyester fiber fabric is used as the receiving substrate, and after electrospinning is completed, it is naturally dried at room temperature to obtain antibacterial fibers.

Embodiment 2

[0046] Prepare 100 parts by weight of PVA aqueous solution with a mass fraction of 10%, add 10 parts by weight of nano titanium dioxide particles with a particle size of 15 nm and 0.04 parts by weight of stearic acid, and carry out ultrasonic dispersion at a frequency of 30KHz to obtain the absolute value of Zeta potential 20mV of spinning solution.

[0047] Electrospin the spinning solution. In electrospinning, the advancing speed is 0.5mL / h, the receiving distance is 13cm, the voltage is 13KV and 1.3 times the mass fraction, the spinning needle is connected to the positive electrode, and the receiving end is connected to the negative electrode. The ultra-fine denier polyester fiber fabric is used as the receiving substrate, and after electrospinning is completed, it is naturally dried at room temperature to obtain antibacterial fibers.

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Abstract

The invention relates to a preparation method of antibacterial fiber. The method comprises the following steps of providing a PVA aqueous solution, wherein the mass fraction of PVA in the PVA aqueous solution is 8-15%; adding nano TiO2 particles and a dispersing agent into the PVA aqueous solution, and performing ultrasonic dispersion to obtain a spinning solution, wherein the mass ratio of the PVA aqueous solution to the nano TiO2 particles ranges from (100: 1) to (100: 15), and the absolute value of the Zeta potential of the spinning solution ranges from 10 mV to 40 mV; and performing electrostatic spinning on the spinning solution to obtain the antibacterial fiber. The invention also relates to the antibacterial fiber prepared by the preparation method and an antibacterial product prepared from the antibacterial fiber. The preparation process is simple, the obtained antibacterial fiber has excellent antibacterial performance, meanwhile, the nano TiO2 particles are not prone to falling off, and the antibacterial rate is reduced by not more than 5% after 50 times of cyclic washing, so that spun products, filtering materials, packaging materials, medicine and health materials and other antibacterial products made from the antibacterial fiber have excellent antibacterial and bacteriostatic performance, and the effect is lasting.

Description

technical field [0001] The invention relates to the technical field of antibacterial materials, in particular to antibacterial fibers, a preparation method thereof, and antibacterial products. Background technique [0002] Nanoscale dispersion of TiO 2 The photo-generated electrons and photo-generated holes generated by photocatalysis and the water or hydroxyl groups adsorbed on the surface of the catalyst form active hydroxyl or superoxide ions with strong oxidizing properties, and conduct biochemical reactions with bacterial cells or bacterial components to completely kill bacteria and degrade bacteria at the same time. Toxic compounds released to prevent secondary pollution caused by endotoxin. Utilize nano-TiO 2 The antibacterial fibers made can be widely used in weaving daily hygiene textiles such as clothes, bed sheets, curtains, etc. In recent years, antibacterial fibers have also been widely used in weaving filter materials, packaging materials and medical and heal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/50D01F1/10
CPCD01F6/50D01F1/103
Inventor 欧阳申珅陈妙金陆龙喜陈鹏刘明
Owner 宁波航天米瑞科技有限公司
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