Core-shell self-repairing fiber bead type electrospinning material based on pH response and synthesis method and application thereof

A technology of electrospinning and synthesis method, applied in the field of polymer chemistry, can solve problems such as low repair efficiency and low drug loading, and achieve the effects of increasing drug loading, improving corrosion resistance, and extending transmission paths

Active Publication Date: 2019-10-11
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Core-shell self-repairing fiber bead type electrospinning material based on pH response and synthesis method and application thereof
  • Core-shell self-repairing fiber bead type electrospinning material based on pH response and synthesis method and application thereof
  • Core-shell self-repairing fiber bead type electrospinning material based on pH response and synthesis method and application thereof

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preparation example Construction

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

[0048]1) Synthesis of A-component shell solution: polymer shell material, shell material template agent, shell material solvent, crosslinking agent, catalyst according to the mass ratio of 1:0.1-2:5-30:0.2-5:0.075-1 Proportionally weighed, the order of drug addition is:

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

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

[0051] 1.3) Finally, in the reflux device, within the temperature range of 40-120°C, stir at a speed of 600-3000rmp for 1-4 hours;

[0052]...

Embodiment 1

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

[0069] (1) Synthesis of shell solution of component A: 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, and dilaurel Weighing of 0.15 g of dibutyltin acid. The order of adding the medicines is that 1g of polyethylene terephthalate polymer shell material, 1g of chitin, 5g of acetone, and 20g of tetrahydrofuran are mixed first, and stirred at a speed of 1000rmp for 6 hours at a temperature range of 45°C. Thereafter, 0.5 g of pyrrolidine was added, and the mixture was stirred at 2000 rpm for 1 hour at a temperature range of 70°C. Add 1 g of dicumyl peroxide and 0.15 g of dibutyltin dilaurate respectively, and stir for 4 hours at a speed of 1000 rpm in a reflux device at a temperature...

Embodiment 2

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

[0075] (1) Synthesis of A component shell solution: 0.5g of polyvinylidene fluoride, 1.5g of methyl cellulose, 0.5g of polyvinyl acetate, Al 2 o 3 1g, ZrO 2 1g, 10g of N,N dimethylformamide, 10g of methanol, 4g of dicumyl hydroperoxide, and 0.6g of bismuth isooctanoate were weighed. The order of adding drugs is to mix 0.5g of polyvinylidene fluoride, 1.5g of methyl cellulose, 0.5g of polyvinyl acetate, 10g of N,N dimethylformamide, and 10g of methanol. Stir at 2500rmp for 48 hours. Add Al later 2 o 3 1g, ZrO 2 1 g, stirred at 2000 rpm for 4 hours at a temperature range of 80°C. Add 4 g of dicumyl hydroperoxide and 0.6 g of bismuth isooctanoate respectively, and stir at a speed of 2000 rpm for 2 hours in a reflux device at a temperature range of 100° C.

[0076] (2) Preparation of...

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Abstract

The invention provides a core-shell self-repairing fiber bead type electrospinning material based on pH response and a synthesis method and application thereof, and belongs to the technical field of polymer chemistry. A 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 which are mixed according to a mass ratio of 1:(0.1-2):(5-30):(0.2-5):(0.075-1); a core solution is mainly composed of a core material and a core material solvent; the parameters such as a feedingsequence, a heating temperature range, a stirring speed and reaction time are optimized. An electrospinning synthesis process adopts a coaxial spinning method to optimize parameters such as voltage,liquid outflow speed and receiver moving speed during electrospinning. The synthesized fiber bead structure can effectively increase the drug loading amount, also has pH sensitivity, can achieve a pHresponse self-repairing function of a local region of a coating, and has wide application prospects in the field of self-repairing 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 coatings are the most important means of anti-corrosion on steel surfaces. Anti-corrosion coatings are the most effective, most economical, most widely used, and most easily recognized by 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, the self-healing anti-corrosion coating has the characteristics of active repair function and effective extension of coating life, and has attracted more and more people's attention. [0003] The method of electrospinning to...

Claims

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Application Information

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Patent Type & Authority Applications(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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