Antibacterial finishing agent and preparation method and antibacterial application thereof

An antibacterial finishing agent and post-finishing technology, which is used in the preparation of antibacterial finishing agents and in the field of antibacterial applications, can solve the problems of decreased antibacterial rate of fabrics, weak combination of antibacterial finishing agents and fabrics, and poor stability of silver sulfide nanoparticles. achieve good stability

Active Publication Date: 2016-08-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the invention is to propose a kind of antibacterial finishing liquid and preparation method and antibacterial application, to overcome the poor water solubility of the silver sulfide nano material prepared in the prior art, the preparation method is complicated, the poor stability of the silver sulfide nano particle that makes Shortcomings, and in the prior art, the combination fastness of antibacterial finishing agent and fabric is not strong, there is the problem that the antibacterial rate of fabric will obviously decline after repeated washing

Method used

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  • Antibacterial finishing agent and preparation method and antibacterial application thereof
  • Antibacterial finishing agent and preparation method and antibacterial application thereof
  • Antibacterial finishing agent and preparation method and antibacterial application thereof

Examples

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preparation example Construction

[0059] The preparation method of an antibacterial finishing agent as described above is characterized in that the steps are as follows: mixing the aqueous solution containing the molecule A substance with the aqueous solution containing the molecule B substance, accompanied by stirring, and adjusting the pH value of the reaction system to 4-6, Then add the silver ion salt solution dropwise to the mixed solution, and continue stirring after the dropwise addition; add the metal sulfide sulfur source aqueous solution dropwise, and continue stirring after the dropwise addition, to obtain the aqueous solution of the hybrid material loaded with silver sulfide nanoparticles ;

[0060] The molecule A-containing substance is a molecule A-containing substance containing a carboxyl group in the molecule A or a molecule A-containing substance containing an amino group in the molecule A;

[0061] The molecule B-containing substance is a molecule B-containing substance containing a carboxyl...

Embodiment 1

[0072]A kind of preparation method of antibacterial finishing agent, under the condition of 20 ℃, the aqueous solution of chitosan containing amino groups with a concentration of 0.5% by mass percent and the aqueous solution of n-butyric acid containing carboxyl groups with a concentration of 3% by mass percent are mixed, wherein, The relative molecular weight of chitosan is 240000, and the molecular weight of n-butyric acid is 88.1, and the mol ratio of chitosan and n-butyric acid is 1:0.3, with stirring; Adopt the HCl solution of 0.1mol / L to adjust the pH value of reaction system to 4. Then add dropwise a silver acetate solution with a concentration of 0.005g / mL to the mixture, wherein the molar ratio of silver acetate to chitosan is 0.1:1, and keep stirring for 0.5h after the dropwise addition; the dropwise addition concentration is 0.01 g / mL sodium sulfide aqueous solution, wherein the molar ratio of silver acetate to sodium sulfide is 1:0.5, continue to stir for 1 hour aft...

Embodiment 2

[0075] A kind of preparation method of antibacterial finishing agent, under the condition of 60 DEG C, the carboxymethyl chitosan aqueous solution that the mass percentage concentration is 3% is mixed with the carboxyl group-containing n-valeric acid aqueous solution that mass percentage concentration is 10%, Wherein, the relative molecular weight of carboxymethyl chitosan is 10000, the molecular weight of n-valeric acid is 102.13, the molar ratio of carboxymethyl chitosan and n-valeric acid is 1:1, accompanied by stirring; adopt 0.3mol / L The HCl solution adjusts the pH value of the reaction system to 6, then in the mixed solution, dripping the silver nitrate solution with a concentration of 2g / mL, wherein the mol ratio of silver nitrate and carboxymethyl chitosan is 10:1, after the dropwise addition is completed Continue to stir for 1h; add a concentration of 0.1g / mL potassium sulfide aqueous solution drop by drop, wherein the molar ratio of silver nitrate to potassium sulfide...

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Abstract

The invention relates to an antibacterial finishing agent and a preparation method and antibacterial application thereof. The antibacterial finishing agent is a hybrid material aqueous solution loaded with silver sulfide nano-particles and is composed of a hybrid material loaded with silver sulfide nano-particles and water, wherein the hybrid material is composed of carrier molecules A, stabilizer molecules B and silver sulfide nano-particles. The preparation method comprises the following steps: stirring and mixing an aqueous solution of A and an aqueous solution of B, regulating the pH value of the mixed solution, sequentially dropwise adding a silver ion salt solution and a metal sulfide sulfur source aqueous solution into the mixed solution, and stirring, thereby obtaining the hybrid material aqueous solution. The silver sulfide nano-particles in the hybrid material loaded with the silver sulfide nano-particles are stably and effectively connected to a molecular chain of the carrier molecules in forms of ionic bonds and coordinate bonds. The water soluble antibacterial finishing agent is very stable, is high in dispersity and has an excellent broad-spectrum antibacterial effect. Moreover, cotton textiles treated by the using method have extremely high inhibition rate on multiple bacteria after standard soaping of over 20 times.

Description

technical field [0001] The invention belongs to the technical field of antibacterial finishing agents, and relates to an antibacterial finishing agent, a preparation method and an antibacterial application, in particular to a preparation method of a stable water-soluble antibacterial finishing agent and an antibacterial application. Background technique [0002] For a long time, human health has been threatened by environmental pollution and bacterial infection. In 1995, the number of deaths caused by bacterial infection in the world was 17 million, accounting for about one-third of the death population; in the spring of 2003, the SARS virus broke out in China and other places; World panic. In the final analysis, these infectious diseases all originate from pathogenic microorganisms. Therefore, countries all over the world pay more attention to the research of antibacterial agents, and the production of antibacterial materials has become a new industry. [0003] Silver-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M13/188D06M11/53D06M13/395D06M15/37D06M15/285D06M15/13D06M13/328D06M15/09D06M15/53D06M101/06D06M101/32
CPCD06M11/53D06M13/188D06M13/328D06M13/395D06M15/03D06M15/09D06M15/13D06M15/285D06M15/37D06M15/53D06M16/00D06M2101/06D06M2101/32
Inventor 孙宾纪俊玲纪晓寰朱美芳孙小国李雪
Owner DONGHUA UNIV
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