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Three-dimensional scaffold with multi-level holes, three-dimensional functional scaffold and preparation method thereof

A three-dimensional stent and hole technology, which can be used in prosthesis, medical science, etc., can solve problems such as troubles, and achieve the effect of simple and easy preparation method and large-scale production.

Active Publication Date: 2021-04-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, three-dimensional porous gels with multi-level pore structures have practical significance and advantages in many fields, while traditional methods for preparing three-dimensional porous gels with multi-level pore structures are cumbersome, such as templates method, etching method, etc.

Method used

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  • Three-dimensional scaffold with multi-level holes, three-dimensional functional scaffold and preparation method thereof
  • Three-dimensional scaffold with multi-level holes, three-dimensional functional scaffold and preparation method thereof
  • Three-dimensional scaffold with multi-level holes, three-dimensional functional scaffold and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Preparation of polyacrylonitrile (PAN) / polyvinylpyrrolidone (PVP) composite solution: add a total of 0.5 g of PAN and PVP powder into 10 mL of DMF solution at a mass ratio of 5:1, and magnetically stir for 12 hours to obtain uniform polymerization substance solution.

[0045] (2) Environment-induced precipitation of the composite scaffold: evenly scrape-coat the precursor solution on the aluminum foil, and induce the precipitation of the composite scaffold under the conditions of 60% humidity and 0 degrees without wind; the DMF solvent in the precipitated porous scaffold is used After washing with distilled water, freeze-dry to obtain the final composite scaffold A / V-60 / 0.

[0046] Example 1:

[0047] (1) Preparation of PAN / PVP composite solution: PAN with a total amount of 0.5 g, PVP powder was added to 10 mL of DMF solution at a mass ratio of 5:1, and magnetically stirred for 12 hours to obtain a uniform polymer solution;

[0048] (2) Environment-induced precipi...

Embodiment 3

[0050] (1) Preparation of PAN / PVP composite solution: 0.5 g of PAN and PVP powder in a mass ratio of 5:1 were added to 10 mL of DMF solution, and magnetically stirred for 12 hours to obtain a uniform polymer solution.

[0051] (2) Environment-induced precipitation of the composite scaffold: evenly scrape-coat the precursor solution on the aluminum foil, and induce the precipitation of the composite scaffold under the conditions of 60% humidity and 60 degrees without wind; the DMF solvent in the precipitated porous scaffold is used After complete washing with distilled water, freeze-dry to obtain the final composite scaffold A / V-60 / 60.

Embodiment 4

[0053] (1) Preparation of PAN / PVP composite solution: PAN with a total amount of 0.5 g, PVP powder was added to 10 mL of DMF solution at a mass ratio of 5:1, and magnetically stirred for 12 hours to obtain a uniform polymer solution;

[0054] (2) Environment-induced precipitation of the composite scaffold: evenly scrape-coat the precursor solution on the aluminum foil, induce the precipitation of the composite scaffold under the conditions of 100% humidity and 0 degrees without wind; use the DMF solvent in the precipitated porous scaffold with After complete washing with distilled water, freeze-dry to obtain the final composite scaffold A / V-100 / 0.

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Abstract

The invention relates to a three-dimensional support with multi-level holes, a three-dimensional functional support and a preparation method thereof, belonging to the field of functional composite materials. The invention provides a method for preparing a three-dimensional scaffold composite material with a multi-level pore structure. The preparation method is as follows: a rigid polymer and polyvinylpyrrolidone are stirred and mixed with a solvent to obtain a uniform polymer solution as a precursor solution, and then The precursor liquid induces self-assembly in a certain external environment to form the three-dimensional scaffold composite material with a multi-level hole structure; wherein, the conditions of the external environment include: temperature 0-80°C, humidity 50%-100%. The present invention proposes for the first time that a three-dimensional scaffold material with a multi-level pore structure can be obtained by using a method of self-assembly of a rigid polymer and PVP through an environment-induced self-assembly. The porous scaffold structure is stable and has a uniform and perfect macroporous structure and a large number of mesopores and micropores. .

Description

technical field [0001] The invention relates to a three-dimensional support with multi-level holes, a three-dimensional functional support and a preparation method thereof, belonging to the field of functional composite materials. Background technique [0002] With the continuous development of human society, there are more and more application scenarios of functional scaffold materials, such as bone tissue replacement materials, adsorption materials, supercapacitors, battery electrodes and other fields. In these many fields, the functional requirements for scaffold materials are also getting higher and higher. So how to make scaffold materials perform better in their respective fields, three-dimensional scaffolds with multi-level pore structures are a good solution. Since there are gaps of different sizes in the stent, these holes of different sizes can exert their corresponding functional effects, and the synergy of these functional effects can make the functional stent e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08L39/06C08L33/20C08K3/04A61L27/56A61L27/54A61L27/44
CPCA61L27/443A61L27/446A61L27/54A61L27/56C08J9/28C08J2201/0482C08J2201/0484C08J2333/20C08J2339/06C08J2433/20C08J2439/06C08K2201/011C08K3/041C08L39/06
Inventor 杨伟喻鹏冯兰祥查湘军孙小蓉王宇杨鸣波
Owner SICHUAN UNIV