Rapid-imbibing foamed material with antibacterial property and preparation method thereof

A foam material and antibacterial technology, which is applied in the field of antibacterial fast liquid absorbing foam material and its preparation, can solve the problems of complicated preparation process, lack of antibacterial performance and liquid absorption performance evaluation, etc., and achieves easy availability of raw materials and excellent liquid absorption ability. , the effect of simple process

Active Publication Date: 2009-12-30
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Chinese invention patent CN101342381A discloses a preparation method of an anti-inflammatory, anti-adhesion and hemostatic sponge. Through cross-linking of polyvinyl alcohol, chitosan gel microspheres are fixed on the inner wall of the sponge, and then soaked in an anti-inflammatory solution and an anti-adhesion solution to obtain PVA. / drug-loaded chitosan anti-inflammatory ant...

Method used

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  • Rapid-imbibing foamed material with antibacterial property and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 70 grams of polyvinyl alcohol with a degree of polymerization of 2000 and a degree of alcoholysis of 99% are dissolved in 930 grams of 95°C hot water to form a 7% solution; adding mass fraction is 400 milliliters of 50% sulfuric acid, adding 5 grams of chitosan, adding 10 1 gram of sodium lauryl sulfate, 5 grams of sodium dibutylnaphthalene sulfonate, mixed evenly and poured into the stirrer, stirred for 20 minutes, and the system became emulsion; adding mass fraction was 60 milliliters of 37% formaldehyde solution, and then continued to stir for 10 Minutes; pour the above liquid into the mold, put it into a constant temperature box, react at 30°C for 40 hours, solidify and form, wash, and dry to obtain the target product.

[0027] The performance test results are shown in Table 1.

Embodiment 2

[0029] 100 grams of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 99% are dissolved in 900 grams of 95°C hot water to make a 10% solution; adding mass fractions is 500 milliliters of sulfuric acid, 5 grams of chitosan, and 10 10 grams of sodium lauryl sulfate, 10 grams of polyoxyethylene sorbitan monolaurate, mixed evenly and poured into the stirrer, stirred for 20 minutes, and the system became emulsion; adding mass fraction was 100 milliliters of 37% formaldehyde solution, Stirring was continued for another 10 minutes; the above liquid was poured into a mold, placed in a constant temperature box, and reacted at 40°C for 15 hours to solidify and form, washed, and dried to obtain the target product.

Embodiment 3

[0031] 300 grams of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 99% and 200 grams of polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 88% are dissolved in 4500 grams of 95°C hot water to form a 10% solution; 2500 milliliters of 50% sulfuric acid, add 20 grams of chitosan, add 75 grams of polyoxyethylene sorbitan monooleate, 25 grams of polyoxyethylene sorbitan monolaurate, mix well and pour into the mixer, Stir for 20 minutes, the system becomes an emulsion; add 500 ml of formaldehyde solution with a mass fraction of 37%, and continue to stir for 30 minutes; pour the above liquid into a mold, put it in a constant temperature box, and react at 50°C for 10 hours to solidify and form, wash and dry , to get the target product.

[0032] The performance test results are shown in Table 1.

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Abstract

The invention provides a rapid-imbibing foamed material with antibacterial property and a preparation method thereof. The material is a porous foamed material with antibacterial property prepared by using polyvinyl alcohol and chitosan as raw materials, formaldehyde as cross linking, and sulfuric acid, surface active agent and water as auxiliary materials; the material has good air permeability, the water absorption rate is more than 1000%, the time with water absorption height being 50mm is less than 150sec, and after imbibing, the material become soft, resilient and flexible sponge. The material has excellent characteristics of bacteria inhabiting, the percentage of reduced bacteria is more than 40% in experimental conditions, resists heat and ultraviolet rays, can be sterilized by a plurality of ways. The material not only can be used as surgical dressing, but also can be used as hemostatic materials, filling materials and the like for surgery. As the material has the advantages of no fiber loss and high imbibing speed, the material has uniqueness in the applications of surgeries in ophthalmology, ear-nose-throat department and other microsurgeries.

Description

technical field [0001] The invention belongs to the field of medical polymer materials, and relates to an antibacterial fast liquid-absorbing foam material and a preparation method thereof. Background technique [0002] The structure of the hydrophilic foam material is porous, it has a large absorption capacity for liquids, and it is almost completely permeable to oxygen and carbon dioxide. Its treatment of wound exudates is controlled by the transport and absorption of water vapor. Foam materials can be molded or processed into products of various thicknesses and shapes, and have a good protective function for wounds. After adding antibacterial ingredients, it can reduce bacterial infection and promote wound healing. [0003] The polyvinyl alcohol molecular chain contains a large number of hydroxyl groups, so it has good hydrophilicity. The foam material prepared by condensation of polyvinyl alcohol and formaldehyde has a rich pore structure and excellent chemical resistanc...

Claims

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Application Information

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IPC IPC(8): C08L29/14C08L5/08C08F16/06C08F8/28C08J9/30A61L15/28A61L15/24A61L15/20A61L15/46A61L15/48
Inventor 王伟财潘艳雄彭超姬相玲罗云霞
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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