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Self-repairable, high-strength and antibacterial soybean protein film and preparation method thereof

A technology of soybean protein and soybean protein isolate, which is applied in the field of preparation of self-healing, high-strength, antibacterial soybean protein films, to achieve the effects of enhanced interaction, excellent mechanical properties, and easy availability of raw materials

Inactive Publication Date: 2020-06-02
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there have been no reports on the research and development of soybean protein films with self-healing, high-strength and antibacterial functions

Method used

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  • Self-repairable, high-strength and antibacterial soybean protein film and preparation method thereof
  • Self-repairable, high-strength and antibacterial soybean protein film and preparation method thereof
  • Self-repairable, high-strength and antibacterial soybean protein film and preparation method thereof

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Effect test

Embodiment 1

[0036] The present embodiment provides a method for preparing a self-healing, high-strength, antibacterial soybean protein film, and the soybean protein film is prepared according to the following weight ratios:

[0037] Soy Protein Isolate 1.5g

[0038] Polyethyleneimine 1.5g

[0039] Anhydrous copper sulfate 0.06g

[0040] Distilled water 57g

[0041] The preparation method steps are as follows:

[0042] (1) Mix soybean protein isolate, polyethyleneimine and distilled water according to the proportion of the prepared materials, and use a high-pressure homogenizer to homogenize and emulsify for 10 minutes under the action of 30MPa pressure and 0.5MPa emulsifying force; then stir at 85 °C 30 min, fully stirred to form a mixed solution;

[0043] (2) Dissolve 6-12 parts of anhydrous copper sulfate in 10 g of water and add dropwise to the above mixed solution, ultrasonicate for 30 min, and then stir at 50 °C for 1 h until uniform;

[0044] (3) Pour the sonicated solution int...

Embodiment 2

[0047] The present embodiment provides a method for preparing a self-healing, high-strength, antibacterial soybean protein film, and the soybean protein film is prepared according to the following weight ratios:

[0048] Soy Protein Isolate 1.5g

[0049] Polyethyleneimine 1.5g

[0050] Anhydrous copper sulfate 0.09g

[0051] Distilled water 57g

[0052] The preparation method steps are as follows:

[0053] (1) Mix soybean protein isolate, polyethyleneimine and distilled water according to the proportion of the prepared materials, and use a high-pressure homogenizer to homogenize and emulsify for 10 minutes under the action of 30MPa pressure and 0.5MPa emulsifying force; then stir at 85 °C 30 min, fully stirred to form a mixed solution;

[0054] (2) Dissolve 6-12 parts of anhydrous copper sulfate in 10 g of water and add dropwise to the above mixed solution, ultrasonicate for 30 min, and then stir at 50 °C for 1 h until uniform;

[0055](3) Pour the sonicated solution into...

Embodiment 3

[0064] The present embodiment provides a method for preparing a self-healing, high-strength, antibacterial soybean protein film, and the soybean protein film is prepared according to the following weight ratios:

[0065] Soy Protein Isolate 1.5g

[0066] Polyethyleneimine 1.5g

[0067] Zinc chloride 0.06g

[0068] Distilled water 57g

[0069] The preparation method steps are as follows:

[0070] (1) Mix soybean protein isolate, polyethyleneimine and distilled water according to the proportion of the prepared materials, and use a high-pressure homogenizer to homogenize and emulsify for 10 minutes under the action of 30MPa pressure and 0.5MPa emulsifying force; then stir at 85 °C 30 min, fully stirred to form a mixed solution;

[0071] (2) Dissolve 6-12 parts of zinc chloride in 10 g of water, add dropwise to the above mixed solution, ultrasonicate for 30 min, and then stir at 50 °C for 1 h until uniform;

[0072] (3) Pour the sonicated solution into a polytetrafluoroethyle...

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Abstract

The invention discloses a self-repairable, high-strength and antibacterial soybean protein film and a preparation method thereof. The self-repairable, high-strength and antibacterial soybean protein film is prepared from the following raw materials by weight: 100 parts of a main agent, 100 parts of a toughening agent, 6-12 parts of a cross-linking agent and 2000 parts of dispersion medium water. The preparation method comprises the following steps of: (1) mixing the main agent, the toughening agent and the dispersion medium water in proportion, and performing homogenizing and emulsifying for 10min by a high-pressure homogenizer under the action of a 30MPa pressure and a 0.5MPa emulsifying force; then performing stirring for 30min at 85DEG C fully into a mixed solution; (2) dissolving 6-12parts of the cross-linking agent into 10g of water, adding the obtained product into the mixed solution dropwise, carrying out ultrasonic treatment for 30min, and then performing stirring at 50DEG C for 1h until the solution is uniform; (3) pouring the solution subjected to the ultrasonic treatment into a polytetrafluoroethylene mold, and performing drying in a 45DEG C vacuum drying oven for 24h to obtain a pre-finished product; and (4) putting the pre-finished product into a drying apparatus with a relative humidity of 45-50% for humidity conditioning, thus finally obtaining the self-repairable, high-strength and antibacterial soybean protein film.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of a self-healing, high-strength, antibacterial soybean protein film. Background technique [0002] Due to the influence of mechanical, thermal, chemical and other external environmental factors during the use of traditional materials, corresponding damage is inevitably generated, and many micro-cracks are formed inside the structure. These micro-cracks will reduce the mechanical properties of the material and shorten the use of the material. deadline, and even bring certain security risks. In recent years, inspired by the wound healing of organisms, self-healing materials can self-repair the damage of the material structure and significantly improve the performance and service life of the materials, so they have received extensive attention. [0003] At present, self-healing materials can be divided into external self-healing and intrinsic self-healing acco...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08L79/02C08K3/30C08K3/16C08J5/18
CPCC08J5/18C08J2389/00C08J2479/02C08K2003/168C08K2003/3045
Inventor 李枫李建章周文瑞张世峰高强张德荣张伟陈惠龚珊珊
Owner BEIJING FORESTRY UNIVERSITY
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