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Preparation method and antibacterial application of a kind of thiourea-cu(II) complex molecule covalently grafted acrylic fiber

A technology of acrylic fibers and complexes, applied in fiber treatment, fiber type, biochemical fiber treatment, etc., can solve the problems of high price, limited use of nano-silver, high production cost, etc., achieve broad market application prospects, excellent light self-cleaning properties , the effect of excellent antibacterial properties

Active Publication Date: 2022-03-18
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently widely used antibacterial agents are silver and copper, but in 2014, the US Natural Resources Defense Council (NRDC) announced restrictions on the use of nano-silver in textiles
Due to the following problems: Ag + It is easy to be oxidized to brown silver oxide or reduced to black elemental silver, which not only reduces its antibacterial activity, but also limits its application in white or light-colored fabrics; it is expensive and has high production costs; antibacterial agents containing certain heavy metal ions When the agent is worn next to the body, it may penetrate into the body and cause accumulation of heavy metals, which will damage health in the long run. These problems have yet to be resolved

Method used

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  • Preparation method and antibacterial application of a kind of thiourea-cu(II) complex molecule covalently grafted acrylic fiber
  • Preparation method and antibacterial application of a kind of thiourea-cu(II) complex molecule covalently grafted acrylic fiber
  • Preparation method and antibacterial application of a kind of thiourea-cu(II) complex molecule covalently grafted acrylic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Acrylic fiber hydrolysis: put the acrylic fiber into a sodium hydroxide solution with a mass percentage concentration of 10% and a temperature of 75° C. for 8 minutes. After the reaction, take out the fiber, wash it, and then dry it to a constant weight;

[0037](2) Preparation of thiouret-Cu(II) complex: place thiomethylhydrazine in a two-necked flask filled with a mixed solution of ethanol and water, and stir at a temperature of 60°C until thiomethylhydrazine dissolves , Weigh an equal proportion of salicylaldehyde (take salicylaldehyde as an example), and dilute it with ethanol. After the thiomethylhydrazine is dissolved and cooled to 40°C, slowly add the diluted salicylaldehyde solution dropwise, and add an appropriate amount of acetic acid to catalyze , stirred and refluxed for 5 hours, cooled to room temperature, suction filtered, the filter cake was washed 2 to 3 times with hot water and ethanol, and the ethanol was volatilized at room temperature, and dried i...

Embodiment 2

[0040] (1) Acrylic fiber hydrolysis: put the acrylic fiber into a sodium hydroxide solution with a mass percentage concentration of 12% and a temperature of 85° C. for 12 minutes. After the reaction, the fiber is taken out, washed, and then dried to a constant weight;

[0041] (2) Preparation of thiouret-Cu(II) complex: place thiomethylhydrazine in a two-necked flask filled with a mixed solution of ethanol and water, and stir at a temperature of 70°C until thiomethylhydrazine dissolves , Weigh an equal proportion of salicylaldehyde (take salicylaldehyde as an example), and dilute it with ethanol. After the thiomethylhydrazine is dissolved and cooled to 50°C, slowly add the diluted salicylaldehyde solution dropwise, and add a drop of acetic acid to catalyze , stirred and refluxed for 7 hours, cooled to room temperature, suction filtered, the filter cake was washed 2 to 3 times with hot water and ethanol, and the ethanol was volatilized at room temperature, and dried in an oven a...

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Abstract

The present invention proposes a preparation method and antibacterial application of acrylic fiber covalently grafted with thiouret-Cu(II) complex molecules, comprising the following steps: (1) acrylic fiber hydrolysis; (2) thiouret-Cu(II) ) complex preparation; (3) thiourea-Cu(Ⅱ) complex grafting hydrolyzed acrylic fibers. The invention endows the acrylic fiber with excellent antibacterial properties, has a good inhibitory effect on Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, and makes up for the defect that the acrylic fiber itself does not have antibacterial properties, and its preparation process is simple and convenient. It is mild and has good application prospects in the fields of personal home textile materials and medical textile materials.

Description

technical field [0001] The invention belongs to the technical field of fiber material modification, and in particular relates to a preparation method and antibacterial application of acrylic fibers covalently grafted with thiouret-Cu(II) complex molecules. Background technique [0002] Polyacrylonitrile fiber is one of the three major synthetic fibers in the world. It is spun from polyacrylonitrile or a copolymer with an acrylonitrile content of more than 85%. "Synthetic wool". However, because polyacrylonitrile fiber does not have antibacterial properties, its application space in the fields of personal home textile materials and medical textile materials is limited. [0003] Thiourea refers to a class of compounds obtained by condensation of thiourea and appropriate aldehydes under certain conditions. Studies have found that thiourea compounds not only have antiviral activity, but also have various biological activities such as antibacterial, antitumor, and antileprosy. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/503D06M11/38D06M101/28
CPCD06M13/503D06M11/38D06M16/00D06M2101/28
Inventor 董雄伟王慧鹏鲁诗雨陈悟崔永明朱立成
Owner WUHAN TEXTILE UNIV