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A core-shell self-healing fiber beaded electrospinning material based on pH response and its synthesis method and application

An electrospinning and self-repairing technology, applied in the field of polymer chemistry, can solve the problems of low drug loading and low repair efficiency, and achieve the effects of increasing drug loading, improving corrosion resistance, and extending the transmission path

Active Publication Date: 2022-07-29
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, studies have shown that purely linear spinning materials have relatively low drug loading and are not efficient in repairing

Method used

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  • A core-shell self-healing fiber beaded electrospinning material based on pH response and its synthesis method and application
  • A core-shell self-healing fiber beaded electrospinning material based on pH response and its synthesis method and application
  • A core-shell self-healing fiber beaded electrospinning material based on pH response and its synthesis method and application

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preparation example Construction

[0047] The present invention is a method for synthesizing a core-shell self-repairing fiber bead type electrospinning material based on pH response, and the specific implementation steps are as follows:

[0048]1) Synthesis of A component shell solution: the polymer shell material, shell material template agent, shell material solvent, cross-linking agent and catalyst are prepared according to the mass ratio of 1:0.1-2:5-30:0.2-5:0.075-1 The proportions are weighed, and the order of adding the drugs is as follows:

[0049] 1.1) Mix the polymer shell material and the shell material solvent first, and stir at a speed of 600-3000rmp for 4-48 hours within the temperature range of 40-90°C;

[0050] 1.2) After that, add the shell material template agent, stir at a speed of 600-3000rmp for 1-4 hours at a temperature range of 50-90 ° C, and add a cross-linking agent and a catalyst respectively;

[0051] 1.3) Finally, in the reflux device, in the temperature range of 40-120°C, stir fo...

Embodiment 1

[0068] A core-shell self-healing fiber beaded electrospinning material based on pH response of the present invention, the specific steps of the synthesis method are as follows:

[0069] (1) Synthesis of A component shell solution: 1 g of polyethylene terephthalate polymer shell material, 1 g of chitin, 0.5 g of pyrrolidine, 5 g of acetone, 20 g of tetrahydrofuran, 1 g of dicumyl peroxide, 1 g of dilaurin Weigh 0.15 g of dibutyltin acid. The order of adding the drugs is as follows: 1 g of polyethylene terephthalate polymer shell material, 1 g of chitin, 5 g of acetone, and 20 g of tetrahydrofuran are mixed first, and stirred at a speed of 1000 rmp for 6 hours within a temperature range of 45 °C. Then, 0.5 g of pyrrolidine was added, and the mixture was stirred at a rotation speed of 2000 rmp for 1 hour in a temperature range of 70°C. 1 g of dicumyl peroxide and 0.15 g of dibutyltin dilaurate were respectively added, and the mixture was stirred at a rotating speed of 1000 rmp f...

Embodiment 2

[0074] A core-shell self-healing fiber beaded electrospinning material based on pH response of the present invention, the specific steps of the synthesis method are as follows:

[0075] (1) Synthesis of A component shell solution: 0.5 g of polyvinylidene fluoride, 1.5 g of methyl cellulose, 0.5 g of polyvinyl acetate, Al 2 O 3 1g, ZrO 2 1 g, 10 g of N,N dimethylformamide, 10 g of methanol, 4 g of dicumyl hydrogen peroxide, and 0.6 g of bismuth isooctanoate were weighed. The order of adding the medicines is: 0.5g of polyvinylidene fluoride, 1.5g of methyl cellulose, 0.5g of polyvinyl acetate, 10g of N,N dimethylformamide and 10g of methanol are mixed first, and the temperature range is 70 ℃. Stir at 2500 rpm for 48 hours. After adding Al 2 O 3 1g, ZrO 2 1 g, in a temperature range of 80°C, stirring at a rotational speed of 2000 rmp for 4 hours. 4 g of dicumyl hydrogen peroxide and 0.6 g of bismuth isooctanoate were respectively added, and in a reflux device, in a tem...

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Abstract

The invention provides a core-shell self-healing fiber bead type electrospinning material based on pH response, a synthesis method and application thereof, and belongs to the technical field of polymer chemistry. The shell solution synthesized by the method is mainly composed of a polymer shell material, a shell material template agent, a shell material solvent, a crosslinking agent, and a catalyst in a mass ratio of 1:0.1-2:5-30:0.2-5:0.075-1 Proportion; the core solution is mainly composed of core material and core material solvent, and parameters such as feeding sequence, heating temperature range, stirring speed, and reaction time are optimized. The electrospinning synthesis process adopts the coaxial spinning method, which optimizes parameters such as voltage, liquid outflow speed, and receiver moving speed during the electrospinning process. The synthesized fiber bead structure can effectively increase the drug loading, and at the same time has pH sensitivity, can realize the pH-responsive self-healing function of the local area of ​​the coating, and has broad application prospects in the field of self-healing anti-corrosion coatings.

Description

technical field [0001] The invention relates to a core-shell self-repairing fiber beaded electrospinning material based on pH response, a synthesis method and application thereof, and belongs to the technical field of polymer chemistry. Background technique [0002] Anti-corrosion coating is the most important anti-corrosion method for steel surface. Anti-corrosion coating is the most effective, most economical, most widely used, and most easily recognized measure among engineering designers and users. Environmental protection, energy saving, resource saving, high performance and functionalization are the direction of research and development, and the coordination of development and environment is the basic requirement of sustainable development. At present, self-healing anti-corrosion coatings have the characteristics of active repairing function and effectively prolonging the life of the coating, which are attracting more and more attention. [0003] The method of prepari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/18D01F8/10D01F8/02D01F8/12D01F1/10C09D5/08
CPCD01F8/14D01F8/18D01F8/10D01F8/02D01F8/12D01F1/10C09D5/08
Inventor 王巍陈守刚窦雯雯李文
Owner OCEAN UNIV OF CHINA
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