Synthesis method and application of superabsorbent resin microspheres with antibacterial properties

A technology of superabsorbent resin and synthesis method, which is applied in the direction of absorbent pads, bandages, medical science, etc., can solve the problems of maximum water absorption multiple, water absorption rate and water locking effect, etc., so as to avoid a sharp rise in reaction temperature and increase The specific surface area and liquid storage capacity, the effect of controllable reaction rate

Active Publication Date: 2021-06-29
HANGZHOU COCO HEALTHCARE PRODS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are various types of polymer water-absorbent resins in the prior art, some of which have been successfully applied to the core of diapers, but they still have the following deficiencies: the maximum water absorption rate, water absorption rate, water-locking effect and avoiding the phenomenon of dough. Important elements are difficult to balance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for synthesizing superabsorbent resin microspheres with antibacterial properties, the steps of the synthesis method are as follows:

[0030] Step S1: The magnetically ordered mesoporous carbon nanospheres are modified with hydrazine groups, and the conditions for the hydrazine group modification treatment are: add 1 g of magnetically ordered mesoporous carbon nanospheres to 80 ml of PBS buffer solution with pH 7.3, and add 10 mg of HBA , 10mg of EDC and 10mg of NHS, stirred and reacted for 6 hours in the dark, then magnetically separated, washed and dried. The particle size is 160-170nm, the average pore size is 4.2-4.4nm, and the magnetic Ms is greater than or equal to 9.0emu / g;

[0031] Step S2: Add a certain amount of magnetically ordered mesoporous carbon nanospheres and polymer dispersant after the treatment in step S1 to a certain amount of water, stir well, then vacuum and / or ultrasonic-assisted degassing treatment for 1 hour, add a certain amount Stir...

Embodiment 2

[0040] A method for synthesizing superabsorbent resin microspheres with antibacterial properties, the steps of the synthesis method are as follows:

[0041] Step S1: The magnetically ordered mesoporous carbon nanospheres are modified with hydrazine groups, and the conditions for the hydrazine group modification treatment are: 2 g of magnetically ordered mesoporous carbon nanospheres are added to 100 ml of PBS buffer solution with pH 7.5, and 20 mg of HBA is added. , 20mg of EDC and 20mg of NHS, stirred and reacted for 8 hours in the dark, then magnetically separated, washed and dried. The particle size is 170-180nm, the average pore size is 4.6-4.8nm, and its magnetic Ms is greater than or equal to 9.0emu / g;

[0042] Step S2: Add a certain amount of magnetically ordered mesoporous carbon nanospheres and polymer dispersant treated in step S1 to a certain amount of water, stir well, then vacuum and / or ultrasonic-assisted degassing treatment for 2 hours, add a certain amount St...

Embodiment 3

[0052] A method for synthesizing superabsorbent resin microspheres with antibacterial properties, the steps of the synthesis method are as follows:

[0053] Step S1: The magnetically ordered mesoporous carbon nanospheres are modified with hydrazine groups. The conditions for the hydrazine group modification treatment are: 1.5 g of magnetically ordered mesoporous carbon nanospheres are added to 90 ml of PBS buffer solution with pH 7.4, and 15 mg of HBA, 15mg of EDC and 15mg of NHS, stirred and reacted for 7 hours in the dark, then magnetically separated, washed and dried. The particle size is 170-180nm, the average pore size is 4.2-4.5nm, and the magnetic Ms is greater than or equal to 9.0 emu / g;

[0054] Step S2: Add a certain amount of magnetically ordered mesoporous carbon nanospheres and polymer dispersant treated in step S1 to a certain amount of water, stir well, then vacuum and / or ultrasonic-assisted degassing treatment for 1.5 hours, add a certain amount of Stir a larg...

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Abstract

The present invention relates to a synthesis method and application thereof of superabsorbent resin microspheres with antibacterial properties. The steps of the synthesis method are as follows: Step S1: Add a certain amount of magnetically ordered mesoporous carbon nanospheres and Polymer dispersant, fully stirred evenly, then vacuum and / or ultrasonic assisted degassing treatment for 1‑2h, added a certain amount of acrylic acid and stirred evenly, and the temperature was controlled at 35‑45°C; Step S2: Add a certain amount of sodium hydroxide to In the system of step S1, stir while adding, and control the temperature of the reaction process at 65-75°C; step S3: add a certain amount of composite crosslinking agent and initiator, control the temperature at 80-90°C and react for 2-3 hours to form a semi-finished product with high water absorption Resin colloid, the composite cross-linking agent is a mixture of NMBA and PEGDA; step S4: the superabsorbent resin colloid of step S3 is placed in a certain amount of solvent and rinsed for 1-3 times, mixed with a certain amount of nano-silver antibacterial agent, Dried until the water content is lower than 3%, crushed to a certain particle size, and magnetically separated to obtain the finished product of the superabsorbent resin.

Description

technical field [0001] The invention relates to a synthesis method and an application thereof of superabsorbent resin microspheres with antibacterial properties, and belongs to the technical field of polymer resin synthesis. Background technique [0002] Superabsorbent resin is widely used in daily life and medical and health fields because of its large water absorption multiple and high water retention rate. Superabsorbent polymers can be divided into three categories according to their raw material sources: starch-based, cellulose-based, and synthetic polymer-based. Starch raw materials have a wide range of sources, many types, and large yields. However, the reaction raw materials are very viscous when hydrolyzed, and the operation and control are very difficult. Natural cellulose has a wide range of sources, and there are many hydroxyl groups on its molecule that can be compatible with water. Furthermore, the fibrous substance has many capillaries and a large surface are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F222/38C08F222/20C08F2/44C08K9/04C08K7/24C08K9/12C08K3/08A61L15/24A61L15/18A61L15/42A61L15/44A61L15/60A61L15/46
CPCA61L15/18A61L15/24A61L15/425A61L15/44A61L15/46A61L15/60A61L2300/104A61L2300/404C08F2/44C08F220/06C08K3/08C08K7/24C08K9/04C08K9/12C08K2003/0806C08K2201/011C08L33/02
Inventor 唐伟金利伟王旭张春娥孔宋华陈锴周黎峰鲍益平裘向阳武晓莺
Owner HANGZHOU COCO HEALTHCARE PRODS
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