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A kind of preparation method of controlled-release antibacterial packaging fiber film with ph intelligent response

A fiber film and intelligent technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve problems such as excessive addition of antibacterial agents, out-of-sync release of antibacterial ingredients, and difficulty in achieving high-efficiency effects in food antibacterial packaging technology. To achieve the effect of improving the effective contact area and large specific surface area

Active Publication Date: 2022-05-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem. It is difficult to achieve high-efficiency effect in the existing food antibacterial packaging technology, the antibacterial agent is added too much, and the release law of antibacterial components is not synchronized with the demand for anti-corruption of food. It provides a pH intelligent response. Preparation method of nanometer antibacterial packaging fiber film

Method used

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  • A kind of preparation method of controlled-release antibacterial packaging fiber film with ph intelligent response
  • A kind of preparation method of controlled-release antibacterial packaging fiber film with ph intelligent response
  • A kind of preparation method of controlled-release antibacterial packaging fiber film with ph intelligent response

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Embodiment 1

[0031] A method for preparing a controlled-release antibacterial packaging fiber film with pH intelligent response, using coaxial electrospinning technology, comprising the following steps:

[0032] (1) Preparation of spinning solution

[0033] ① Preparation of shell solution: Dissolve 2g of Eudragit L100-55 in 20mL of 80% ethanol-water solution, then add 0.2g of sodium citrate for blending, seal and stir until completely dissolved to obtain a mixed solution;

[0034] ②Preparation of nuclear layer solution: dissolve 0.05mL of cinnamon essential oil in 10mL of ethyl acetate to dilute, and stir evenly;

[0035] (2) Preparation of fiber membrane

[0036]Using coaxial electrospinning technology, inject the shell layer solution and the obtained core layer solution into the syringe respectively; the corresponding technical condition parameters are: the voltage applied by the high-voltage power supply is 15kV, the receiving distance is 10cm, and the core layer solution The propulsi...

Embodiment 2

[0049] A method for preparing a pH intelligent response controlled-release antibacterial packaging fiber film, using coaxial electrospinning technology, comprising the following steps:

[0050] (1) Preparation of spinning solution

[0051] ① Preparation of shell solution: Dissolve 3g of Eudragit L100-55 in 20mL of 85% ethanol-water solution, then add 0.1g of citric acid to blend, seal and stir until completely dissolved to obtain a mixed solution;

[0052] ②Preparation of nuclear layer solution: dissolve 0.1mL of oregano essential oil in 10mL of Tween 80 to dilute, and stir well;

[0053] (2) Coaxial electrospinning technology is used for the preparation of the fiber membrane, and the shell solution and the obtained core solution are injected into the syringe respectively; the corresponding technical condition parameters are: the voltage applied by the high-voltage power supply is 23kV, and the received The distance is 20cm, the advancing rate of the core solution is 0.2mL / h,...

Embodiment 3

[0064] A method for preparing a pH intelligent response controlled-release antibacterial packaging fiber film, using coaxial electrospinning technology, comprising the following steps:

[0065] (1) Preparation of spinning solution

[0066] ①Preparation of shell solution: Dissolve 2.5g of Eudragit L100-55 in 20mL of 90% ethanol-water solution, then add 0.12g of disodium hydrogen phosphate for blending, seal and stir until completely dissolved to obtain a mixture solution;

[0067] ②Preparation of nuclear layer solution: dissolve 0.07mL of thyme essential oil in 10mL of ethanol to dilute, and stir evenly;

[0068] (2) Preparation of fiber membrane

[0069] Using coaxial electrospinning technology, completely dissolve the shell solution and the core solution obtained in step ① and inject them into the syringe respectively; the corresponding technical parameters are: the voltage applied by the high voltage power supply is 18kV, the receiving distance is 15cm, The propulsion rat...

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Abstract

The invention belongs to the technical field of packaging materials, and relates to a preparation method of a pH-intelligently responsive controlled-release antibacterial packaging fiber film; the steps are as follows: dissolving Eudragit L100-55 in an ethanol-water solution, and then adding a weak acid and weak base salt for blending , to obtain a shell layer solution; then dilute the plant essential oil in an organic solvent, stir evenly, and obtain a core layer solution; use the shell layer solution and the core layer solution as spinning solutions, and use coaxial electrospinning technology for spinning. The propelling rate of the shell solution is greater than that of the core layer solution, and the tin foil is used as the receiving substrate to collect through a drum, and the obtained nanofiber film is a pH-responsive controlled-release antibacterial packaging fiber film. The fibrous membrane prepared by the invention is safe and non-toxic, and can be in direct contact with food; through the "on-demand" release of antibacterial components, its utilization efficiency is maximized, and the safety and quality of food are guaranteed on the premise of not weakening the antibacterial effect. .

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a preparation method of a pH intelligent response controlled-release antibacterial packaging fiber film. Background technique [0002] At present, with the large-scale development of food processing, transportation and storage integration technology, its circulation has expanded to all parts of the world. Therefore, it is not only necessary for food to maintain a long shelf life but also to ensure the quality and safety of food; at the same time, it is hoped that chemical additives should be minimized in food processing, so this poses new challenges to food safety and quality from the processing origin to the sales market. Under the premise of this era, high-efficiency packaging came into being. Antimicrobial packaging is a packaging system that prolongs the shelf life of food or improves the safety and sensory quality of food by changing the environmenta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4382D01D5/34D01F1/10
CPCD04H1/728D04H1/4382D01D5/34D01F1/103D01F8/10D01F1/10D01D5/0069
Inventor 张俊俊石吉勇邹小波黄晓玮张长才刘黎张佳凝李家珩
Owner JIANGSU UNIV
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