Nano-silver/graphene/cellulose fiber composite material with polyethyleneimine as binder and preparation method of nano-silver/graphene/cellulosic fiber composite material

A polyethyleneimine, cellulose fiber technology, applied in fiber treatment, plant fiber, biochemical fiber treatment and other directions, can solve problems such as unsolved bond fastness, and achieve improved fastness, simple technological process, and excellent antibacterial properties. Effect

Inactive Publication Date: 2019-03-08
苏州吉晟信纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these documents firstly did not solve the defect of poor bonding fastness, and secondly, the layer-by-layer self-assembly of AgNPs was mostly carried out on the surface of the film.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016](1) Polyethyleneimine is mixed with mass fraction and is the aqueous solution of 1%, adds a certain amount of silver nitrate and ascorbic acid, the mass ratio of described silver nitrate and polyethyleneimine is 1, the mass ratio of described silver nitrate and ascorbic acid The ratio was 1:1, and after magnetic stirring, the reaction was performed at 60°C for 100 min, and polyethyleneimine-modified AgNPs were obtained after repeated washing with ethanol and deionized water, centrifugation, and drying. (2) Prepare a polyethyleneimine aqueous solution with a mass fraction of 1%, pour it into a three-necked flask, and then slowly add dropwise a 1mol / L methacrylic acid aqueous solution, and the volume ratio of the polyethyleneimine aqueous solution to the methacrylic acid aqueous solution is 0.5, magnetically stirred and reacted at room temperature for 12 hours. After the reaction was completed, the pH value of the solution was adjusted to 10 with sodium bicarbonate, and dia...

Embodiment 2

[0018] (1) Polyethyleneimine is mixed with mass fraction and is the aqueous solution of 5%, adds a certain amount of silver nitrate and ascorbic acid, the mass ratio of described silver nitrate and polyethyleneimine is 2, the mass ratio of described silver nitrate and ascorbic acid The ratio was 1:1, and after magnetic stirring evenly, reacted at 70°C for 30 min, washed repeatedly with ethanol and deionized water, centrifuged, and dried to obtain polyethyleneimine-modified AgNPs. (2) Prepare a polyethyleneimine aqueous solution with a mass fraction of 5%, pour it into a three-necked flask, then slowly add dropwise a 3mol / L aqueous methacrylic acid solution, and the volume ratio of the polyethyleneimine aqueous solution to an aqueous methacrylic acid solution is 1. Magnetic stirring and react at room temperature for 18 hours. After the reaction is completed, use sodium bicarbonate to adjust the pH value of the solution to 11, dialyze in deionized water for 2 days to remove unrea...

Embodiment 3

[0020] (1) Polyethyleneimine is mixed with mass fraction and is the aqueous solution of 10%, adds a certain amount of silver nitrate and ascorbic acid, the mass ratio of described silver nitrate and polyethyleneimine is 5, the mass ratio of described silver nitrate and ascorbic acid The ratio was 1:1, and after uniform magnetic stirring, the reaction was carried out at 80°C for 15 minutes, and polyethyleneimine-modified AgNPs were obtained after repeated washing with ethanol and deionized water, centrifugation, and drying. (2) Prepare a polyethyleneimine aqueous solution with a mass fraction of 10%, pour it into a three-necked flask, then slowly add dropwise a methacrylic acid aqueous solution of 5mol / L, and the volume ratio of the polyethyleneimine aqueous solution to the methacrylic acid aqueous solution is 2. Magnetically stirred and reacted at room temperature for 24 hours. After the reaction was completed, use sodium bicarbonate to adjust the pH value of the solution to 12...

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Abstract

The invention discloses a nano-silver/graphene/cellulosic fiber composite material with polyethyleneimine as a binder and a preparation method of the nano-silver/graphene/cellulosic fiber composite material. Polyethyleneimine modified nano-silver particles, modified polyethyleneimine modified AgNPs and polyethyleneimine-modified graphene are deposited layer by layer on surfaces of cellulose fibers. According to the invention, polyethyleneimine and modified polyethyleneimine are adopted as a reducing agent and a stabilizer of AgNPs, polyethyleneimine is adopted as a reducing agent and a modifier of graphene oxide, and the preparation method has the advantages of simple process, mild reaction, green and environmental protection, and the like. Polyethyleneimine plays an effective role in bonding among cellulose fibers, nano-silver and graphene. When the prepared AgNPs and graphene are used for finishing cellulose fibers, the defects of easy agglomeration, poor washing resistance and poorlong-term durability of nano materials existing in the conventional nano material finishing method are overcome, and the prepared nano-silver/graphene/ cellulosic fiber composite material has excellent antibacterial, anti-UV, antistatic, far infrared and washable properties and other properties.

Description

technical field [0001] The invention relates to a nano-silver / graphene / cellulose fiber composite material with polyethyleneimine as a binder and a preparation method thereof, belonging to the field of functional nanometer materials and textile materials. Background technique [0002] Nanomaterials refer to macroscopic materials formed by stacking nanostructures in a certain way or dispersed in a certain matrix, and their excellent performance depends on their unique microstructure. Nanomaterials have properties such as quantum size effects, heat, electricity, and catalysis. Silver nanoparticles (AgNPs) are an important inorganic nanomaterial with unique physical and chemical properties, and are widely used in catalysis, optoelectronics, optics, bioscience and pharmaceuticals (Zhang Qingshan, Yue Xiuping. Biological preparation of silver nanoparticles and application research progress [J]. Materials Heralds, 2014, 28(01): 53-58). [0003] According to the different reaction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/61D06M11/83D06M11/74D06M101/06
CPCD06M11/74D06M11/83D06M15/61D06M16/00D06M2101/06
Inventor 赵兵葛亮亮潘磊张平夏银虎
Owner 苏州吉晟信纺织有限公司
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