Nanofiber composite membrane containing plant source antibacterial agents, preparation method and application of nanofiber composite membrane

A nanofiber and composite film technology, which is applied in the fields of nanomaterials and food packaging materials, can solve problems such as unreported research on antibacterial nanofiber films, and achieve the effects of long-lasting antibacterial effect, simple operation and simple process.

Inactive Publication Date: 2013-08-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, it has been reported to use electrospinning technology to blend polymers (polyvinyl alcohol, polylactic acid, polycaprolactone, etc.) with metal particles, proteins, c

Method used

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  • Nanofiber composite membrane containing plant source antibacterial agents, preparation method and application of nanofiber composite membrane
  • Nanofiber composite membrane containing plant source antibacterial agents, preparation method and application of nanofiber composite membrane
  • Nanofiber composite membrane containing plant source antibacterial agents, preparation method and application of nanofiber composite membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of preparation method of nanofiber composite film, concrete steps are as follows:

[0040] (1) Dissolve 6g of polyvinyl alcohol in 100mL of distilled water, stir at 80°C for 3 hours to obtain a 6% polyvinyl alcohol solution, and cool to room temperature;

[0041] (2) Inhale the spinning solution obtained in (1) into a 10mL syringe, install a needle with a diameter of 0.6mm, adjust the distance from the needle to the receiver to 16cm, adjust the voltage at 20kV, the temperature at 27°C, the humidity at 60%, and the flow rate control Spinning at 0.6mL / h for 4h, and then vacuum drying at 35°C for 12h to obtain a 6% polyvinyl alcohol nanofiber composite membrane.

[0042] The SEM and particle size distribution of the nanofibrous membrane prepared under the above process conditions are shown in figure 1 .

Embodiment 2

[0044] A preparation method of a nanofiber composite film containing a plant-derived antibacterial agent, the specific steps are as follows:

[0045] (1) Dissolve 6g of polyvinyl alcohol in 100mL of distilled water and stir at 80°C for 3 hours to obtain a 6% polyvinyl alcohol solution;

[0046] (2) After the solution obtained in (1) was cooled to 30°C, 5 mL of cinnamon essential oil was added thereto, and stirred at 30°C for 2 hours to obtain the desired spinning solution.

[0047] (3) Inhale the spinning solution obtained in (2) into a 10mL syringe, install a needle with a diameter of 0.6mm, adjust the distance from the needle to the receiver to 15cm, adjust the voltage at 20kV, the temperature at 24°C, the humidity at 58%, and the flow rate control Spinning at 0.5mL / h for 4h, and then vacuum drying at 35°C for 12h, the antibacterial nanofiber composite film of 6% polyvinyl alcohol + 5% cinnamon essential oil was obtained.

[0048] The SEM and particle size distribution of t...

Embodiment 3

[0050] A preparation method of a nanofiber composite film containing a plant-derived antibacterial agent, the specific steps are as follows:

[0051] (1) Dissolve 6g of polyvinyl alcohol in 100mL of distilled water and stir at 80°C for 3 hours to obtain a 6% polyvinyl alcohol solution;

[0052] (2) After cooling the polyvinyl alcohol solution obtained in (1) to 50°C, add 2g of β-cyclodextrin and stir at room temperature for 1 hour to obtain a spinning solution of 6% polyvinyl alcohol + 2% β-cyclodextrin;

[0053] (3) After the solution obtained in (2) was cooled to 30°C, 5g of cinnamon essential oil was added thereto, and stirred at 30°C for 2h to obtain the desired spinning solution.

[0054] (4) Inhale the spinning solution obtained in (3) into a 10mL syringe, install a needle with a diameter of 0.6mm, adjust the distance from the needle to the receiver to 14cm, adjust the voltage to 15kV, the temperature to 27°C, the humidity to 60%, and the flow rate to be controlled Spin...

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Abstract

The invention belongs to the field of nanometer materials and food packaging materials, and discloses a nanofiber composite membrane containing plant source antibacterial agents, a preparation method and application of the nanofiber composite membrane. The preparation method of the nanofiber composite membrane includes a first step of preparing 6%-10%, by mass, of polyving akohol solution, a second step of cooling the obtained polyving akohol solution down to 30-50 DEG C, adding 1%-3% of beta-cyclodextrin, carrying out magnetic stirring for 0.5-1 hour, and then cooling the mixtures down to indoor temperatures, a third step of adding 2%-8% of cinnamon essential oil to the solution of the second step, carrying out magnetic stirring for 1-2 hours at 25-40 DEG C, and obtaining spinning solution, and a fourth step of carrying out electrostatic spinning on the obtained spinning solution, carrying out vacuum drying, and obtaining the nanofiber composite membrane containing the plant source antibacterial agents. The sterilizing rate of the nanofiber composite membrane for staphylococcus aureus and escherichia coli is larger than or equal to 90%, and the nanofiber composite membrane has good tenacity, biocompatibility and degradability, and has wide application prospect in the field of the food packaging materials.

Description

technical field [0001] The invention belongs to the field of nanomaterials and food packaging materials, and in particular relates to a method for preparing a plant-derived antibacterial agent into an antibacterial polyvinyl alcohol / cinnamon essential oil / β-cyclodextrin nanofiber composite film by using an electrospinning technology and its application. Background technique [0002] Food antibacterial packaging material is a new functional material that can kill or inhibit common food spoilage bacteria and pathogenic bacteria by adding antibacterial agents inside or on the surface of the packaging material, and prolong the shelf life of the packaged goods. At present, the research on antibacterial agents for food packaging mainly focuses on organic antibacterial agents, inorganic antibacterial agents and natural antibacterial agents. Organic antibacterial agents include quaternary ammonium salts, halides, isothiazoles, diphenyl ethers, organic metals and organic nitrogen com...

Claims

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Application Information

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IPC IPC(8): D04H1/728D01D5/00D01F6/50D01F1/10
Inventor 吴虹温棚宗敏华娄文勇朱定和
Owner SOUTH CHINA UNIV OF TECH
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