A kind of composite sponge material and preparation method thereof

The technology of composite sponge and calcium alginate is applied in the field of composite sponge material and its preparation, which can solve the problems of complex sponge material method, low adsorption capacity, easy shedding of bacteria, etc., and can prevent ultraviolet radiation and improve water permeability. , Good disinfection and sterilization effect

Inactive Publication Date: 2011-12-14
中淮生物科技(亳州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One purpose of the present invention is to solve above-mentioned prior art composite sponge adsorption capacity is lesser, makes bacterial body easy to come off, needs frequent replacement, inconvenient to use, use cost height etc. problem, and the method for producing composite sponge material is comparatively loaded down with trivial details, To solve the problems of low efficiency, provide a composite sponge material with good elasticity, good flexibility, high water content, good disinfection and sterilization effect, large adsorption capacity, and difficult for bacteria to fall off, as well as a simple and efficient preparation Method for composite sponge material

Method used

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  • A kind of composite sponge material and preparation method thereof
  • A kind of composite sponge material and preparation method thereof
  • A kind of composite sponge material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Dissolve 20g of polyvinyl alcohol in 480g of hot water at 80°C, filter to obtain a 4% aqueous solution of polyvinyl alcohol, add 2.5g of glutaraldehyde solution dropwise under stirring with a magnetic heating stirrer, adjust the pH to 6.5 with hydrochloric acid, and react at room temperature 1.5h.

[0037]Mix and stir 5g sodium alginate and 5g pectin, drop into the above PVA solution, continue to stir for 0.5h, and stir at 1000r / min to obtain a compound, pour it into a mold after homogenization, freeze-dry to form a film according to the existing technology, and then statically Place it for defoaming for 24 hours and take it out. Add 300g 2% CaCl 2 Solution, soaked for 4h, the membrane material changed from transparent to milky white, Ca 2+ Cross-linking reaction with sodium alginate produces calcium alginate. The reacted membrane material was washed with tap water for 3 times, and then with distilled water for 3 times, put into the pre-lowered plate layer to freeze ...

Embodiment 2-9

[0042] Prepare product with the method of embodiment 1, the amount of its each material is as follows: polyvinyl alcohol and CaCl 2 Applied in the form of a solution, the concentration is expressed in mass percent; the mass unit is Kg, expressed in net content.

[0043]

[0044] Among them, calcium alginate is prepared by reacting sodium alginate dispersed in polyvinyl alcohol solution with calcium chloride, adding CaCl 2 The amount of the solution is such that the amount of calcium ions in the solution is more than 0.5 times the amount of sodium ions in the sodium alginate.

[0045] Product performance test:

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Abstract

The invention relates to the field of dressing preparation, and relates to a composite sponge material and a preparation method thereof. It solves the problem that the adsorption capacity of the composite sponge in the prior art is small, the bacteria body is easy to fall off, needs to be replaced frequently, the use is inconvenient, and the use cost is high. Provide a composite sponge containing polyvinyl alcohol, calcium alginate, pectin, etc., which has good elasticity, good flexibility, high water content, good disinfection and sterilization effects, and has the advantages of large adsorption capacity and difficult for bacteria to fall off. material, and a method for preparing a composite sponge material with simple operation and high efficiency.

Description

technical field [0001] The invention relates to the field of dressing preparation, and relates to a composite sponge material and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of people's quality of life, more and more attention has been paid to medical and health care, and traditional medical dressings have been difficult to meet people's needs. Traditional medical dressings are mostly gauze made of cellulose fibers such as cotton and viscose. The disadvantages are: ① cannot keep the wound moist, and wound healing is delayed; ② dressing fibers are easy to fall off, causing foreign body reactions; ⑧ wound granulation tissue is easy to grow When the dressing is inserted into the mesh of the dressing, the new tissue will be damaged when the dressing is changed, causing secondary injury to the wound; ④When the dressing is soaked, pathogens can easily pass through; ⑤The water absorption is limited, ...

Claims

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Application Information

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IPC IPC(8): A61L15/28A61L15/24A61L15/20C08J9/28C08J7/12C08J5/18
Inventor 张守力
Owner 中淮生物科技(亳州)有限公司
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