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Preparation method of mesoporous zeolite polymer material

A technology of polymer material and mesoporous zeolite, which is applied in the field of preparation of mesoporous zeolite polymer materials, can solve the problems of skin burns, increase of wound temperature, influence on wound healing, etc., and achieve the effect of alleviating the problem of heat dissipation

Inactive Publication Date: 2022-03-25
CHINA UNIV OF GEOSCIENCES (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, because zeolite contains a large number of pore structures, when zeolite interacts with water, the adsorption process and the formation of hydrogen bonds are both exothermic processes. Therefore, when zeolite is used to stop bleeding, it will absorb water in the blood and combine with water Interact with each other, thereby releasing heat, causing the local temperature of the wound to rise, which may even be as high as 90°C, which will cause skin burns and affect wound healing

Method used

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  • Preparation method of mesoporous zeolite polymer material

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preparation example Construction

[0033] Specifically, the preparation method of the mesoporous zeolite polymer material, hereinafter referred to as the preparation method, includes the following steps:

[0034] S1: washing and pre-drying the zeolite to obtain the zeolite whose surface soluble impurities are removed;

[0035] S2: adding a mixed solution of sodium hydroxide and hydrogen peroxide according to a preset ratio to the zeolite from which surface soluble impurities have been removed to carry out surface hydroxylation modification treatment to obtain surface hydroxylation-modified zeolite;

[0036] S3: Mix the zeolite modified by surface hydroxylation with lactic acid monomer, add catalyst and dewatering agent to carry out solvothermal reaction, washing and drying treatment to obtain the finished product.

[0037] It is worth mentioning that, as a bio-based polymer material, polylactic acid has attracted much attention due to its good antibacterial ability, biological activity, biocompatibility and bio...

Embodiment 1

[0055] (1) Zeolite pretreatment: Select zeolite with a particle size range of 70-900 μm, wash it several times with deionized water to wash away the soluble inorganic matter on the surface, and then dry it in a digital display electric heating constant temperature drying oven at 60°C for 12 hours.

[0056] (2) Zeolite surface hydroxylation modification: Mix the pretreated zeolite with the mixed solution of sodium hydroxide and hydrogen peroxide at a ratio of 0.3g:30ml, ultrasonically disperse for 10min, impregnate for 30min, heat and stir at 60°C for 2h, After filtration, wash with ethanol and deionized water for several times, and then vacuum-dry at 60°C for 12 hours to obtain surface hydroxylation-modified zeolite, wherein the sodium hydroxide and hydrogen peroxide in the mixed solution of sodium hydroxide and hydrogen peroxide are in the aqueous solution The proportions are 0.5% and 2% respectively.

[0057] (3) Add 2 g of modified zeolite into a beaker, add 10 g of lactic ...

Embodiment 2

[0061] (1) Zeolite pretreatment: select zeolite with a particle size range of 70-900 μm, wash it several times with deionized water to remove soluble inorganic matter on the surface, and then dry it in a digital display electric heating constant temperature drying oven at 70°C for 8 hours.

[0062] (2) Zeolite surface hydroxylation modification: Mix the pretreated zeolite with the mixed solution of sodium hydroxide and hydrogen peroxide at a ratio of 0.5g:50ml, ultrasonically disperse for 20min, impregnate for 40min, heat, stir and reflux at 80°C for 2h, After filtration, wash with ethanol and deionized water for several times, and then vacuum-dry at 70°C for 8 hours to obtain surface hydroxylation-modified zeolite, wherein the sodium hydroxide and hydrogen peroxide in the mixed solution of sodium hydroxide and hydrogen peroxide are in the aqueous solution The proportions are 0.5% and 2% respectively.

[0063] (3) Add 3g of modified zeolite into a beaker, add 15g of lactic aci...

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Abstract

The invention discloses a preparation method of a mesoporous zeolite high-molecular material. Zeolite capable of relieving the problem of exothermic burns in the hemostasis process can be obtained. The method comprises the following steps: S1, washing and drying zeolite to obtain zeolite with soluble impurities removed from the surface; s2, adding a mixed solution of sodium hydroxide and hydrogen peroxide into the zeolite from which the surface soluble impurities are removed according to a preset proportion, and carrying out surface hydroxylation modification treatment to obtain surface hydroxylation modified zeolite; and S3, mixing the zeolite subjected to surface hydroxylation modification with a lactic acid monomer, adding a catalyst and a dewatering agent, carrying out a solvothermal reaction, washing, and drying to obtain a finished product.

Description

technical field [0001] The present application relates to the technical field of hemostatic materials, in particular to a method for preparing a mesoporous zeolite polymer material. Background technique [0002] Zeolite is a porous crystalline aluminosilicate. Its special molecular structure can form a large electrostatic attraction, which can absorb the water in the blood flowing out of the wound in a short time, and make red blood cells, platelets and other blood coagulation factors aggregate and concentrate. At the same time, because of its long-term physical and chemical stability and no biological toxicity, it has become an ideal material for the preparation of hemostatic agents. [0003] However, because zeolite contains a large number of pore structures, when zeolite interacts with water, the adsorption process and the formation of hydrogen bonds are both exothermic processes. Therefore, when zeolite is used to stop bleeding, it will absorb water in the blood and comb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08C08G63/78C08K9/02C08K7/26A61L24/00A61L24/02A61L24/04
CPCC08G63/08C08G63/78C08K9/02C08K7/26A61L24/02A61L24/046A61L24/0036A61L2400/04C08L67/04
Inventor 岳文王浩东王青青王尉佘丁顺孟德忠康嘉杰朱丽娜付志强
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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