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Slow-release antibacterial electrostatic spinning nanofiber and preparation method thereof

An electrospinning and nanofiber technology, which is applied in the direction of electrospinning, spinning solution preparation, fiber treatment, etc., can solve the problems of food quality, high active ingredients of essential oils, and inability to prolong the shelf life of food, and achieve the goal of reducing emulsifiers Effects of using and avoiding destruction

Pending Publication Date: 2022-01-14
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As an antibacterial agent, plant essential oil has the advantages of green, non-polluting, low toxicity, easy volatility, high activity and wide application range, so when it is applied to packaging materials, its release speed should be controlled, otherwise it is easy to cause sudden release of essential oil As a result, the effective ingredients of essential oils in the packaging in a short period of time are too high, which not only cannot prolong the shelf life of food, but also may cause problems such as food quality

Method used

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  • Slow-release antibacterial electrostatic spinning nanofiber and preparation method thereof
  • Slow-release antibacterial electrostatic spinning nanofiber and preparation method thereof
  • Slow-release antibacterial electrostatic spinning nanofiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of spinning solution

[0030] The mass ratio of 1wt% nanocellulose airgel and 6wt% polyvinyl alcohol aqueous solution obtained by TEMPO oxidation through high-pressure homogenization is 3:4, and the proportion of thyme essential oil (plant essential oil) accounting for the mass fraction of spinning solution is 4%. Disperse completely evenly under 1000rpm / min high-speed shearing machine for 10min, and then use a centrifuge at 6000rpm / min to defoam for 20min to remove air bubbles in the solution to obtain spinning solution. The preparation process is as follows: figure 1 ;

[0031] (2) Physical performance test of spinning solution

[0032] The viscosity, electrical conductivity and surface tension of the spinning solution were tested, and the results are shown in Figure 3(a), Figure 3(b), and Figure 3(c);

[0033] (3) Set the electrospinning process parameters and prepare nanofibers

[0034] The spinning voltage is 18kV, the injection speed of the spin...

Embodiment 2

[0038] (1) Preparation of spinning solution

[0039] The mass ratio of 1wt% nanocellulose airgel to 6wt% polyvinyl alcohol aqueous solution obtained by TEMPO oxidation through high-pressure homogenization is 3:4, and the mass fraction of thyme essential oil (thyme essential oil for plant essential oil) in the spinning solution is 6 % mixed in a ratio of 1000rpm / min high-speed shearing machine for 10min to make it completely evenly dispersed, and then use a centrifuge at 6000rpm / min to defoam for 20min to remove the bubbles in the solution to obtain a spinning solution, such as figure 1 ;

[0040] (2) Physical performance test of spinning solution

[0041] The viscosity, electrical conductivity and surface tension of the spinning solution were tested, and the results are shown in Figure 3(a), Figure 3(b), and Figure 3(c);

[0042] (3) Set the electrospinning process parameters and prepare nanofibers

[0043] The spinning voltage is 18kV, the injection speed of the spinning s...

Embodiment 3

[0047] (1) Preparation of spinning solution

[0048] The mass ratio of 1wt% nanocellulose airgel to 6wt% polyvinyl alcohol aqueous solution is 3:4 after high-pressure homogenization by TEMPO oxidation, and the mass fraction of thyme essential oil (thyme essential oil for plant essential oil) in the spinning solution is 8 % mixed in a ratio of 1000rpm / min high-speed shearing machine for 10min to make it completely evenly dispersed, and then use a centrifuge at 6000rpm / min to defoam for 20min to remove the bubbles in the solution to obtain a spinning solution, such as figure 1 ;

[0049] (2) Physical performance test of spinning solution

[0050] The viscosity, electrical conductivity and surface tension of the spinning solution were tested, and the results are shown in Figure 3(a), Figure 3(b), and Figure 3(c);

[0051] (3) Set the electrospinning process parameters and prepare nanofibers

[0052] The spinning voltage is 18kV, the injection speed of the spinning solution is ...

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Abstract

The invention provides a slow-release antibacterial electrostatic spinning nanofiber and a preparation method thereof. Nanocellulose hydrogel, a polyvinyl alcohol aqueous solution and plant essential oil are prepared into a spinning solution according to a certain proportion, the physical property of the spinning solution is detected, technological parameters in the electrostatic spinning process are set, and the nanofiber with slow-release and antibacterial effects are prepared. The nanofiber prepared by the preparation method provided by the invention has the characteristics of being green, safe, simple in process, capable of effectively prolonging the shelf life of food and the like, and can be applied to the field of green packaging materials.

Description

technical field [0001] The invention belongs to the field of green packaging materials, and relates to a slow-release antibacterial electrostatic spinning nanofiber and a preparation method thereof. [0002] technical background [0003] Nanocellulose, as one of the most abundant natural polymers on earth, has received more and more attention and applications. Making cellulose into nanofiber functional materials is also often used in various fields. Among them, antibacterial materials made by combining antibacterial agents have also been paid attention to in food packaging. [0004] As an antibacterial agent, plant essential oil has the advantages of green, non-polluting, low toxicity, easy volatility, high activity and wide application range, so when it is applied to packaging materials, its release speed should be controlled, otherwise it is easy to cause sudden release of essential oil As a result, the effective components of essential oils in the packaging are too high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08D01D5/00D01D1/02
CPCD01F2/08D01D5/003D01D5/0092D01D5/0069D01D5/0076D01D1/02
Inventor 张正健张金珊刘芮铭陈蕴智
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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