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Preparation method of porous hydrogel

A technology of porous hydrogel and preparation steps, which is applied in the field of preparation of porous hydrogel, which can solve the problems of low porosity and low strength, and achieve the effect of increasing porosity, increasing strength and increasing proportion

Inactive Publication Date: 2019-01-18
CHANGZHOU AMANTE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: Aiming at the shortcomings of traditional porous hydrogels with low porosity and low strength, a preparation method of porous hydrogels is provided

Method used

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  • Preparation method of porous hydrogel

Examples

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Effect test

example 1

[0021] Put polyvinyl alcohol and water in a three-necked flask with a mass ratio of 1:50, stir with a glass rod for 20 minutes, let it stand for swelling for 5 hours, then place the three-necked flask in a magnetic stirrer with a digital speed measurement and constant temperature at a temperature of 85 ° C. Under the condition of rotating speed of 600r / min, heat and stir to dissolve for 60min, add gelatin with 0.8 times the mass of polyvinyl alcohol, and heat and stir to dissolve for 60min under the condition of temperature of 85°C and rotating speed of 600r / min, then add polyethylene into the three-necked flask Hydrochloric acid with 10 times the mass of alcohol and glutaraldehyde solution with 10 times the mass of polyvinyl alcohol were stirred and mixed for 12 hours at a temperature of 38°C and a rotational speed of 300r / min to obtain a mixed slurry, and then the mixed slurry was filtered to obtain a gel. Cut the gel into pieces, wash them with deionized water for 6 days, ch...

example 2

[0023]Put polyvinyl alcohol and water in a three-necked flask with a mass ratio of 1:50, stir with a glass rod for 20 minutes, let it stand for swelling for 5 hours, then place the three-necked flask in a magnetic stirrer with a digital speed measurement and constant temperature at a temperature of 85 ° C. Under the condition of rotating speed of 600r / min, heat and stir to dissolve for 60min, add gelatin with 0.8 times the mass of polyvinyl alcohol, and heat and stir to dissolve for 60min under the condition of temperature of 85°C and rotating speed of 600r / min, then add polyethylene into the three-necked flask Hydrochloric acid with 10 times the mass of alcohol and glutaraldehyde solution with 10 times the mass of polyvinyl alcohol were stirred and mixed for 12 hours at a temperature of 38°C and a rotational speed of 300r / min to obtain a mixed slurry, and then the mixed slurry was filtered to obtain a gel. Cut the gel into pieces, wash them with deionized water for 6 days, cha...

example 3

[0025] Put polyvinyl alcohol and water in a three-necked flask with a mass ratio of 1:50, stir with a glass rod for 20 minutes, let it stand for swelling for 5 hours, then place the three-necked flask in a magnetic stirrer with a digital speed measurement and constant temperature at a temperature of 85 ° C. Under the condition of rotating speed of 600r / min, heat and stir to dissolve for 60min, add gelatin with 0.8 times the mass of polyvinyl alcohol, and heat and stir to dissolve for 60min under the condition of temperature of 85°C and rotating speed of 600r / min, then add polyethylene into the three-necked flask Hydrochloric acid with 10 times the mass of alcohol and glutaraldehyde solution with 10 times the mass of polyvinyl alcohol were stirred and mixed for 12 hours at a temperature of 38°C and a rotational speed of 300r / min to obtain a mixed slurry, and then the mixed slurry was filtered to obtain a gel. Cut the gel into pieces, wash them with deionized water for 6 days, ch...

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Abstract

The invention discloses a preparation method of porous hydrogel and belongs to the technical field of high molecular materials. The preparation method comprises the following steps: sequentially weighing 40-50 parts by weight of pretreated acrylamide, 8-10 parts by weight of dry oil, 3-5 parts by weight of linoleic acid, 5-8 parts by weight of an emulsifying agent, 8-10 parts by weight of calciumcarbonate, 2-3 parts by weight of ammonium persulfate, 10-20 parts by weight of a modified additive, 8-10 parts by weight of a composite foaming agent and 60-80 parts by weight of water; mixing the pretreated acrylamide, the dry oil, the linoleic acid, the emulsifying agent, the calcium carbonate and the water, then adding the ammonium persulfate, performing nitrogen-filled heating and stirring reaction, then adding the modified additive and the composite foaming agent, injection-molding, standing and de-molding to obtain a blank; putting the blank in hydrochloric acid for ultrasonic immersion, taking out and drying to obtain the porous hydrogel. The porous hydrogel prepared by the technical scheme of the invention has the characteristics of high porosity and strength, thereby having a wide prospect in the development of the high molecular material technology industry.

Description

technical field [0001] The invention discloses a preparation method of a porous hydrogel, which belongs to the technical field of polymer materials. Background technique [0002] Hydrogel is a hydrophilic but water-insoluble polymer. They can quickly swell to an equilibrium volume in water and still maintain their shape and three-dimensional space network structure, and dehydrate and deswell under certain conditions. molecular material. Because of its unique, water-retaining and biomimetic properties, hydrogels are widely used in the fields of industry, agriculture, medicine and bioengineering materials. The use of hydrogels is mainly characterized by parameters such as swelling rate, swelling rate and mechanical strength. Although gels synthesized by traditional methods can obtain high swelling rates, their swelling kinetics are usually quite slow. Due to the influence of material selection and production process, the swelling and deswelling time of hydrogels can range fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08J3/075C08L33/26C08L91/00C08L29/04C08L89/00C08K5/09C08K3/26
CPCC08J3/075C08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/08C08J2203/02C08J2333/26C08J2429/04C08J2489/00C08J2491/00
Inventor 雷国平兰梅菊吴庆梅
Owner CHANGZHOU AMANTE CHEM CO LTD
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