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Preparation method of antibacterial composite fiber membrane

A composite fiber membrane and composite technology, which is applied in fiber treatment, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of fiber membrane structure damage, nano silver and fiber membrane cannot be tightly combined, poor biocompatibility, etc.

Active Publication Date: 2016-12-07
太湖县市场监督检验所(太湖县功能膜检测研究院)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The silver-loaded nanoparticle / composite fiber membrane prepared by the prior art has poor biocompatibility, and by-products are produced during the preparation process, causing the structure of the fiber membrane to be destroyed, which limits the application of the antibacterial fiber membrane
Moreover, because nano-silver is granular and the particle size is nano-level, it can only be gathered in a specific part of the fiber membrane and cannot be evenly distributed on the surface, thereby affecting the antibacterial effect; on the other hand, nano-silver cannot be tightly combined with the fiber membrane (especially When the content of nano-silver particles increases, it is easy to agglomerate), and it is easy to fall off during use, thus affecting the service life and antibacterial effect

Method used

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  • Preparation method of antibacterial composite fiber membrane
  • Preparation method of antibacterial composite fiber membrane
  • Preparation method of antibacterial composite fiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of porous graphene silver-loaded antibacterial composite material, it comprises the following steps:

[0035] (1) Preparation of graphene quantum dot suspension: weigh 0.5g of C60 powder, measure 50ml of concentrated sulfuric acid with a mass fraction of 98%, mix C60 powder and concentrated sulfuric acid in a beaker, place the beaker in an ice-water bath, and simultaneously Stir at a speed of 500rpm to obtain a mixed solution; weigh 0.5g of potassium permanganate powder, and slowly add it to the above mixed solution; remove the ice-water bath and replace it with a water bath, keep the temperature of the water bath at 30~40°C, and react for 8 hours; quickly add 200ml Pure water, filtered, and then dialyzed for 3 days with a dialysis bag with a molecular weight cut-off of 1000, to obtain a suspension of graphene quantum dots; the suspension of graphene quantum dots was stirred at a speed of 100 rpm, while laser irradiation was performed for 30 ...

Embodiment 2

[0041] A kind of preparation method of porous graphene silver-loaded antibacterial composite material, it comprises the following steps:

[0042] (1) Preparation of graphene quantum dot suspension: Weigh 0.6g of C60 powder, measure 80ml of concentrated sulfuric acid with a mass fraction of 98%, mix C60 powder and concentrated sulfuric acid in a beaker, put the beaker in an ice-water bath, and simultaneously Stir at a speed of 500rpm to obtain a mixed solution; weigh 1g of potassium permanganate powder, and slowly add it to the above mixed solution; remove the ice-water bath and replace it with a water bath, keep the temperature of the water bath at 30~40°C, and react for 6 hours; quickly add 200ml of pure Water, filtered, and then dialyzed for 3 days with a dialysis bag with a molecular weight cut-off of 1000 to obtain a suspension of graphene quantum dots; the suspension of graphene quantum dots was stirred at a speed of 100 rpm, while laser irradiation was performed for 40 mi...

Embodiment 3

[0048] A kind of preparation method of porous graphene silver-loaded antibacterial composite material, it comprises the following steps:

[0049] (1) Preparation of graphene quantum dot suspension: Weigh 0.8g of C60 powder, measure 100ml of concentrated sulfuric acid with a mass fraction of 98%, mix C60 powder and concentrated sulfuric acid in a beaker, put the beaker in an ice-water bath, and simultaneously Stir at a speed of 500rpm to obtain a mixed solution; weigh 3g of potassium permanganate powder, and slowly add it to the above mixed solution; remove the ice-water bath and replace it with a water bath, keep the temperature of the water bath at 30-40°C, and react for 5 hours; quickly add 100ml of pure Water, filtered, and then dialyzed for 3 days with a dialysis bag with a molecular weight cut-off of 1000 to obtain a suspension of graphene quantum dots; the suspension of graphene quantum dots was stirred at a speed of 100 rpm, while laser irradiation was performed for 30 m...

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Abstract

The invention discloses a preparation method of an antibacterial composite fiber membrane. The preparation method comprises the following steps: (1) preparing an antibacterial spinning solution, namely, weighing a proper amount of polyethylene glycol 400 and putting the polyethylene glycol 400 into a conical flask with a plug; raising the temperature to 50 DEG C and adding dichloromethane, wherein the volume ratio of the dichloromethane to the polyethylene glycol is 7 to 2; adding PLLA (Poly L Lactic Acid) with the molecular weight of 100000 and stirring by a magnetic force for 2 h at a room temperature; stirring at the speed of 100 rpm-300 rpm and dropwise adding an antibacterial compound dispersion solution with the concentration of 0.01mol / l-0.1mol / l; further stirring for 30 min-40 min to prepare the antibacterial spinning solution; and (2) carrying out electrostatic spinning to prepare the antibacterial composite fiber membrane. A specially prepared antibacterial compound is applied to a polylactic acid fiber membrane, so that the fiber membrane has lasting and effective antibacterial activity, good air permeability, high stability, broad-spectrum antibacterial property and biodegradable property.

Description

technical field [0001] The invention relates to the technical field of composite fibers, in particular to a preparation method of an antibacterial composite fiber membrane. Background technique [0002] Nanofibrous membrane has the advantages of large surface area, high porosity, loose structure, pre-designed composition according to the required function, simulating extracellular matrix, and simple preparation method, and has great application potential in many fields. It has been used in food, medicine, Daily chemicals and other fields have been widely used. In particular, nanofibrous membranes prepared with natural polymers as spinning solutions not only have the above characteristics, but also have excellent biocompatibility, biodegradability and renewability. Electrospinning is the simplest and most efficient method for preparing nanofibrous membranes. [0003] The silver-loaded nanoparticle / composite fiber membrane prepared by the prior art has poor biocompatibility,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/03D04H3/005D01D5/00D01F6/92D01F1/10
CPCD01D5/003D01F1/103D01F6/92D04H3/005D04H3/03D10B2401/13
Inventor 陆庚
Owner 太湖县市场监督检验所(太湖县功能膜检测研究院)
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