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Gelatin/fiber composite antibacterial film and preparation method and application thereof

A technology of fiber composite and antibacterial film, which is applied in the field of gelatin/fiber composite antibacterial film and its preparation, can solve the problems of poor mechanical properties of electrospun film, achieve long-lasting antibacterial and fresh-keeping properties, rich pore structure, excellent mechanical properties and barrier sexual effect

Pending Publication Date: 2021-02-02
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, in order to solve the problem of poor mechanical properties of electrospun films, the primary purpose of the present invention is to provide a preparation method of gelatin / fiber composite antibacterial film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the gelatin / fiber composite antibacterial film of the present embodiment comprises the steps:

[0026] (1) Weigh 5 g of gelatin particles and add to 95 mL of deionized water, stir and heat to 50° C. to obtain a gelatin aqueous solution with a concentration of 5 wt%.

[0027] (2) Pour the obtained gelatin aqueous solution into a plastic mold, and leave it to stand and cool to obtain a gelatin gel.

[0028] (3) Ground the obtained gelatin gel with a metal wire as a receiving plane.

[0029] (4) Add nano-cyclodextrin MOFs and eugenol into dichloromethane, and obtain eugenol-cyclodextrin MOFs clathrate through magnetic stirring, centrifugation and washing. Weigh 0.3g of polylactic acid and 0.5g of eugenol-cyclodextrin MOFs clathrate, dissolve in 9.2g of dichloromethane to obtain an electrospinning solution, the injection speed of the solution is 1mL / h, the temperature is 35°C, and the voltage 18kV, the distance is 15cm, electrospinning is carried...

Embodiment 2

[0032] The preparation method of the gelatin / fiber composite antibacterial film of the present embodiment comprises the steps:

[0033] (1) Weighing 10 g of gelatin particles was added to 90 mL of deionized water, stirred and heated to 43° C. to obtain a gelatin aqueous solution with a concentration of 10 wt%.

[0034] (2) Pour the obtained gelatin aqueous solution into a plastic mold, and leave it to stand and cool to obtain a gelatin gel.

[0035] (3) Ground the obtained gelatin gel with a metal wire as a receiving plane.

[0036] (4) Add nano-cyclodextrin MOFs and cinnamaldehyde into dichloromethane, and obtain cinnamaldehyde-cyclodextrin MOFs clathrate through magnetic stirring, centrifugation and washing. Weigh 1 g of polycaprolactone and 0.8 g of cinnamaldehyde-cyclodextrin MOFs clathrate, dissolve in 8.2 g of dichloromethane to obtain an electrospinning solution, the injection speed of the solution is 0.8 mL / h, and the temperature is 30 °C , the voltage is 20kV, the d...

Embodiment 3

[0039] The preparation method of the gelatin / fiber composite antibacterial film of the present embodiment comprises the steps:

[0040] (1) Weigh 20 g of gelatin particles and add to 80 mL of deionized water, stir and heat to 47° C. to obtain a gelatin aqueous solution with a concentration of 20 wt%.

[0041] (2) Pour the obtained gelatin aqueous solution into a plastic mold, and leave it to stand and cool to obtain a gelatin gel.

[0042] (3) Ground the obtained gelatin gel with a metal wire as a receiving plane.

[0043] (4) Add nano-cyclodextrin MOFs and limonene into dichloromethane, and obtain limonene-cyclodextrin MOFs clathrate through magnetic stirring, centrifugation and washing. Weigh 2 g of polyhydroxybutyrate and 1 g of limonene-cyclodextrin MOFs inclusion compound, dissolve in 7 g of dichloromethane to obtain an electrospinning solution, the injection speed of the solution is 0.2 mL / h, the temperature is 25 °C, and the voltage 23kV, the distance is 20cm, electro...

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Abstract

The invention provides a gelatin / fiber composite antibacterial film and a preparation method and application thereof. The preparation method of the antibacterial film comprises the following steps: adding gelatin particles into deionized water, stirring and heating, so that a gelatin aqueous solution is obtained, pouring the gelatin aqueous solution into a mold to obtain gelatin gel, grounding thegelatin gel through a metal wire to serve as a receiving plane, dissolving a polymer material and an antibacterial agent in a solvent to obtain an electrostatic spinning solution, adjusting parameters to perform electrostatic spinning, forming a fiber layer on the surface of the gelatin gel, and drying. According to the invention, the gelatinous gelatin is used as a receiving plane for electrostatic spinning, the electrostatic spinning fibers are uniformly deposited on the surface of the gelatinous gelatin, and the gelatin / fiber composite antibacterial film with the electrostatic spinning fibers firmly attached to the surface is obtained after drying, and has excellent mechanical properties and barrier properties. The antibacterial essential oil-loaded nano-cyclodextrin MOFs material is added into the electrostatic spinning fiber, so that the composite film is endowed with lasting antibacterial and fresh-keeping characteristics.

Description

technical field [0001] The invention belongs to the technical field of composite films, and in particular relates to a gelatin / fiber composite antibacterial film and its preparation method and application. Background technique [0002] Electrospinning technology can simply and quickly prepare various fiber films, which are widely used in the fields of biomedicine, energy and catalysis. Electrospun films are made of short fibers stacked on top of each other, and their mechanical properties and barrier properties are difficult to match with traditional plastic films. Cyclodextrin MOFs materials are edible porous materials obtained by self-assembly of γ-cyclodextrin and potassium ions, which can efficiently load antibacterial essential oils, improve the stability of essential oils, and adjust the release characteristics of essential oils to achieve durable antibacterial. Contents of the invention [0003] In view of the deficiencies in the prior art, in order to solve the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L89/00C08L67/04C08L91/00C08L5/16C08L87/00
CPCC08J5/18C08J2389/00C08J2405/16C08J2467/04C08J2487/00C08J2489/00C08J2491/00
Inventor 董庆丰李立张莹莹杨岚
Owner SHANGHAI OCEAN UNIV
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