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Method for improving triboelectric output performance of protein film by changing protein structure

A technology of protein structure and output performance, applied in triboelectric generators and other directions, can solve the problems of discarding vegetable protein, harsh extraction conditions, cumbersome processing steps, etc., and achieve the effect of improving the solution degree, avoiding strong alkaline conditions and improving output performance.

Active Publication Date: 2020-12-11
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

However, cumbersome processing steps will make it difficult to use in practical applications
[0003] As an industrial by-product, plant protein has abundant sources, but it is difficult to use it in the food field due to its harsh extraction conditions
Therefore, vegetable protein is often discarded as animal feed or boiler fuel or even waste, and is not fully utilized

Method used

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  • Method for improving triboelectric output performance of protein film by changing protein structure
  • Method for improving triboelectric output performance of protein film by changing protein structure
  • Method for improving triboelectric output performance of protein film by changing protein structure

Examples

Experimental program
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Effect test

preparation example Construction

[0032] In the control group, the plant protein film was prepared, and the plant protein film was prepared by the deposition method: first, the film-forming liquid was prepared, and the insoluble protein powder was dissolved in an appropriate solvent: water or ethanol aqueous solution, and then an appropriate amount of glycerin was added as a plasticizer. After heat treatment, the protein is denatured to obtain a more extended structure required for film formation, and finally the solvent is evaporated to obtain a protein film with uniform texture, certain transparency and good flexibility.

[0033] The experimental group prepared the plant protein film by using the deposition method to prepare the plant protein film: firstly, the film-forming liquid was prepared, and the insoluble protein powder and a small amount of another protein were co-dissolved in a strong alkali aqueous solution (1-5% , w / w), after being kept under this condition for a short period of time, acidified to ...

example 1

[0038]The first is the preparation of the experimental histone solution, disperse 1.25g of insoluble rice glutenin in 25mL aqueous solution (5%, w / w), and add 0.0125g of another variety of rice glutenin, by adding 1M hydrogen Sodium oxide was adjusted to pH 12 to fully dissolve it under strong alkalinity. After stirring for 3 hours, 1M hydrochloric acid was added to acidify the solution to pH 10.5, and then 0.1M hydrochloric acid was used to adjust the solution to pH 7.5. The entire pH cycle process needs to be carried out under stirring conditions. Finally, the salt and other small molecular compounds in the protein solution were removed by dialysis to obtain the film-forming solution of the experimental group.

[0039] Such as figure 1 As shown, compared with the negative control group (without any treatment of rice gluten fully hydrated in water), the absolute value of the protein solution potential of the experimental group is higher, indicating that the protein solution ...

example 2

[0041] The first is the preparation of the experimental histone solution, disperse 1.25g of insoluble rice glutenin in 25mL aqueous solution (5%, w / w), and add 0.0125g of another variety of rice glutenin, by adding 1M hydrogen Sodium oxide was adjusted to pH 12 to fully dissolve it under strong alkalinity. After stirring for 3 hours, 1M hydrochloric acid was added to acidify the solution to pH 10.5, and then 0.1M hydrochloric acid was used to adjust the solution to pH 7.5. The entire pH cycle process needs to be carried out under stirring conditions. Finally, the salt and other small molecular compounds in the protein solution were removed by dialysis to obtain the film-forming solution of the experimental group.

[0042] Next is the preparation of the protein solution of the control group, dispersing 1.25g of insoluble rice gluten in 25mL aqueous solution (5%, w / w), adjusting the pH to 12 by adding 1M sodium hydroxide, making it under strong alkaline Fully dissolved and stir...

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Abstract

The invention discloses a method for improving triboelectric output performance of a protein film by changing a protein structure. Indissolvable protein powder and a trace amount of another protein powder are co-dissolved in a strong alkaline aqueous solution and maintained for a period of time, and then acidifying treatment is performed to achieve neutrality to allow charge redistribution to induce refolding of the protein, which results in burying of hydrophobic groups of the protein and exposure of charged groups. Therefore, the solubility of the protein is remarkably improved, and a uniform protein solution is formed under a neutral condition. The vegetable protein structure is changed through a pH circulation process, a surface group exposure condition is adjusted, and the output performance of the vegetable protein film is greatly improved.

Description

technical field [0001] The invention relates to a method for improving the triboelectric power generation performance of a protein film, in particular to a method for improving the triboelectric output performance of a protein film by changing the protein structure, improving its performance as a triboelectric nanogenerator electron-donating layer, and greatly improving output power of the triboelectric nanogenerator. Background technique [0002] With people's growing demand for clean and sustainable energy, various technologies such as photovoltaics, piezoelectricity, thermoelectricity, osmotic power generation, etc. are developing rapidly to convert various forms of renewable energy in the surrounding environment, such as mechanical, chemical , solar energy, thermal energy and wind energy etc. are converted into electrical energy. However, it is well known that mechanical energy is one of the most abundant and ubiquitous sources of energy available in everyday life. As ...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08K5/053C08J5/18H02N1/04
CPCC08J5/18H02N1/04C08J2389/00C08J2489/00C08K5/053C07K14/415C07K1/13C07K1/02
Inventor 平建峰姜成美应义斌
Owner ZHEJIANG UNIV
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