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Preparation method of graphene anti-bacterial composition and anti-bacterial SPA (super absorbent resin)

A technology of antibacterial composition and graphene, applied in the field of graphene oxide antibacterial composition, can solve the problems of colloid blockage, low pressure absorption rate, low water retention rate, etc. range, the effect of excellent antibacterial properties

Active Publication Date: 2017-12-29
浙江卫星新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The purpose of the present invention is to provide a kind of graphene antibacterial composition for the deficiencies and defects of the present inorganic antibacterial agent and organic antibacterial agent, and the graphene antibacterial composition is a tea soap formed by intercalating graphene oxide with natural organic matter tea saponin Plain intercalated graphene antibacterial composition, the tea saponin intercalated graphene antibacterial composition has the advantages of rapidity, high efficiency, long-term effect, broad spectrum, etc., and simultaneously provides an antibacterial composition compounded with the above-mentioned tea saponin intercalated graphene Antibacterial superabsorbent resin, the antibacterial superabsorbent resin not only has excellent, safe and quick-acting and slow-release long-acting antibacterial performance, but also has high pressure absorption performance, high water retention and high salt resistance absorption performance, solving the existing super absorbent The salt-resistant absorption performance and pressure-resistant absorption rate of the permanent resin are low, the water retention rate is low, and the gel strength is low after absorbing urine, and even the technical problems of colloid blockage (slow liquid flow rate) caused by colloid collapse

Method used

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  • Preparation method of graphene anti-bacterial composition and anti-bacterial SPA (super absorbent resin)
  • Preparation method of graphene anti-bacterial composition and anti-bacterial SPA (super absorbent resin)

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preparation example Construction

[0062] The preparation of the antibacterial superabsorbent resin of the present invention comprises: adding primary cross-linking agent and stirring After uniformity, add 0-45% tea saponin intercalated graphene antibacterial composition and ultrasonically disperse for 30-240min, then heat up to 35°C-70°C and add colloidal antibacterial superabsorbent resin formed by initiator polymerization. The colloidal antibacterial superabsorbent resin is sequentially granulated, dried, and surface-treated with a mixed cross-linking agent at a temperature of 110-180°C to obtain a polyacrylate core-shell antibacterial high-density resin with a three-dimensional cross-linked network structure. Absorbent resin. The mixed cross-linking agent is prepared by making composite cross-linking agent and 55%-100% tea saponin intercalated graphene antibacterial composition, deionized water and ultrasonically dispersing to form a mixed cross-linking agent, wherein the tea saponin intercalated The conce...

Embodiment 1

[0066] The tea saponin intercalated graphene antibacterial composition described in this embodiment consists of the following parts by weight: 5 g of tea saponin, 10 g of graphene oxide, and 0.01 g of sodium lauryl sulfate. Wherein, the purity of the tea saponin is 75%.

[0067] The graphene oxide is porous graphene oxide, and the polar oxygen-containing functional groups of the porous graphene oxide are carboxylated, and the pore diameter is 0.5-100 nm.

[0068] The tea saponin intercalated graphene antibacterial composition described in the present embodiment is made by the following steps:

[0069] Step 1: dissolving an appropriate amount of tea saponin in deionized water to form a tea saponin solution with a mass concentration of 5%.

[0070] Step 2: Add sodium lauryl sulfate in deionized water and stir evenly, then add graphene oxide into deionized water so that the concentration of graphene oxide is 0.2mg / mL, ultrasonically disperse for 30-240min to form graphite Alken...

Embodiment 2

[0074] The tea saponin intercalated graphene antibacterial composition described in this embodiment consists of the following parts by weight: 45 g of tea saponin, 50 g of graphene oxide, and 2 g of sodium dodecylsulfonate. Wherein, the purity of the tea saponin is 85%. The graphene oxide is selected from porous graphene oxide, and the polar oxygen-containing functional groups of the porous graphene oxide are carboxylated, and the pore diameter is 0.5-100 nm.

[0075] The tea saponin intercalated graphene antibacterial composition described in the present embodiment is made by the following steps:

[0076] Step 1: dissolving an appropriate amount of tea saponin in deionized water to form a tea saponin solution with a mass concentration of 20%.

[0077] Step 2: Add sodium dodecylsulfonate into deionized water, and stir evenly, then add graphene oxide into deionized water so that the concentration of graphene oxide is 20mg / mL, ultrasonically disperse for 30-240min to form graph...

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Abstract

The invention relates to a preparation method of a graphene anti-bacterial composition. The composition comprises the following ingredients in parts by weight: 5-45 parts of tea saponin, 10-50 parts of graphene oxide and 0.01-2 parts of a dispersing agent and is prepared by the following steps: step 1, dissolving an appropriate amount of tea saponin into deionized water, so as to form tea saponin solution with the mass concentration of 5%-20%; step 2, adding the dispersing agent into the deionized water, uniformly stirring the mixture, adding the graphene oxide into the deionized water until the concentration of the graphene oxide is 0.2-20 mg / mL, and performing ultrasonic dispersion for 30-240 min, so as to form graphene suspension liquid; step 3, adding the graphene suspension liquid obtained in step 2 into the tea saponin solution obtained in step 1, and performing ultrasonic dispersion for 30-120 min, so as to form tea saponin intercalated graphene suspension liquid; step 4, freezing and drying the tea saponin intercalated graphene suspension liquid obtained in step 3, so as to obtain powdery tea saponin intercalated graphene.

Description

technical field [0001] The invention belongs to the research field of functional antibacterial materials, in particular to a graphene oxide antibacterial composition. Background technique [0002] Super absorbent polymer (SAP) is a general term for polymers with high water absorption and water retention properties. In foreign countries, in the early 1950s, Goodrich Corporation of the United States developed cross-linked polyacrylic acid resins, and then Russell et al., the Northern Research Center of the United States Department of Agriculture, began to study the grafting technology of starch and acrylonitrile in 1961; by 1978, Sanyo, Japan Chemical Industry Co., Ltd. develops and industrializes the production of starch-grafted polyacrylic acid copolymerized superabsorbent resin. In China, the research on superabsorbent resin started in the early 1980s. Due to objective factors such as late start and short development time, the innovation ability and technology development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/24C08L33/02C08L33/14C08L71/02C08K9/04C08K3/04C08K5/00C08J3/24
CPCC08J3/247C08J2333/02C08J2333/14C08J2333/24C08K2201/011C08L33/02C08L33/14C08L33/24C08L2205/025C08L2312/00C08L71/02C08K9/04C08K3/04C08K5/0058
Inventor 洪锡全裴小苏周丕严刘若铎
Owner 浙江卫星新材料科技有限公司
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