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

A method for improving a triboelectric output performance of a protein film by changing a protein structure, comprising pretreating a protein powder to obtain a protein solution, adding a plasticizer, and denaturing the protein through a heat treatment to obtain a more extensive structure required for film forming;

• evaporating a solvent and drying to obtain a transparent and flexible protein film with a uniform texture;
• wherein pretreating the protein powder to obtain the protein solution comprises co-dissolving a first protein powder and a minor amount of another protein powder in an alkaline aqueous solution and maintaining for a period of time, and performing an acidifying treatment to achieve neutral condition to form the protein solution under a neutral condition,
• wherein the first protein powder is a plant protein comprising rice protein, peanut protein isolate, soybean protein isolate, wheat glutelin, or zein, and
• wherein the alkaline aqueous solution is a sodium hydroxide solution to adjust pH to a range between 11 and 13, and is maintained for a period of time for 2 to 8 hours.