Alcohol Soluble Protein Porous Membrane via Anti-Solvent Self-Assembly
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Solution Overview
Problem
Traditional methods for preparing alcohol soluble protein membranes are time-consuming and lack control over microstructure, leading to inefficiencies and resource waste in cereal protein utilization.
Innovation Solution
A one-step method for preparing alcohol soluble protein gas-liquid interface self-assembled porous membranes, where the protein is dissolved in a good solvent and then titrated with an anti-solvent to form a membrane rapidly, with parameters like concentration, temperature, pH, and ionic strength controlled to regulate the membrane's structure and porosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional solvent evaporation method is used to prepare alcohol soluble protein membrane, then the membrane can be formed, but the preparation time is long and microstructure is not controllable
Solution Approach 1:
The invention utilizes phase transition of alcohol soluble protein from soluble state to insoluble state through anti-solvent addition. When anti-solvent is added to the protein solution, the protein undergoes phase separation and precipitates at the gas-liquid interface, forming a membrane structure. This phase transition mechanism enables both rapid formation (improving productivity) and controllable microstructure (improving manufacturing precision) by adjusting parameters such as anti-solvent concentration, addition rate, and interface conditions.
Solution Approach 2:
The gas-liquid interface acts as an intermediary that mediates the formation of the protein membrane. The interface provides a specific environment where protein molecules self-assemble and organize into a membrane structure. By controlling the interface conditions (such as surface tension, temperature, and composition), the microstructure of the formed membrane can be precisely controlled while maintaining rapid formation kinetics.
2Adaptability or versatility
If tape casting method with mixed plasticizer is used, then film structure can be modified, but the preparation process becomes complex and time-consuming
Solution Approach 1:
The invention extracts and eliminates the complex multi-component plasticizer system from the traditional tape casting method. Instead of using mixed plasticizers (such as glycerol, sorbitol, and starch syrup in various combinations), the invention uses a simple anti-solvent system that achieves membrane formation through phase transition. This extraction of unnecessary components simplifies the preparation process while maintaining structure modifiability through controlled phase separation parameters.
Solution Approach 2:
The invention achieves film structure modifiability through parameter changes in the phase transition process rather than through complex composition modifications. By adjusting parameters such as anti-solvent concentration, temperature, pH, and addition rate, the microstructure of the formed membrane can be precisely controlled. This approach provides adaptability and versatility in film structure design without increasing process complexity.
3Loss of substance
If alcohol soluble protein is used for membrane preparation, then resource utilization can be improved, but the preparation time is excessive
Solution Approach 1:
The invention skips the long evaporation time required in traditional methods by using anti-solvent induced phase transition. Instead of relying on slow solvent evaporation to concentrate and solidify the protein, the anti-solvent rapidly induces precipitation and membrane formation at the interface. This rushes through the time-consuming evaporation step while maintaining high protein utilization efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method significantly increases preparation efficiency, allowing for precise control over membrane structure and porosity, enabling rapid production of membranes with modifiable properties and potential for controlled release of active substances.
Implementation Method 1
alcohol soluble protein gas-liquid interface self-assembled porous membrane
Implementation Method 2
The cereal alcohol soluble protein contains 40% to 60% hydrophobic amino acids... so it shows unique characteristics of self-assembly, membrane forming
Implementation Method 3
dropping the membrane storage solution in the S1 into the anti-solvent in the S2 to form a self-assembled porous membrane
Data Source
AI summary
An alcohol soluble protein gas-liquid interface self-assembled porous membrane and a preparation method thereof are provided. The alcohol soluble protein gas-liquid interface self-assembled porous membrane is prepared from an alcohol soluble protein membrane storage solution by an anti-solvent method. The porous interface membrane is rapidly prepared by an alcohol soluble protein interface self-assembled one-step method and can be rapidly formed within 4 seconds, which greatly improves the preparation efficiency of the alcohol soluble protein membrane. The structure (size, pore diameter, micro porosity) of the alcohol soluble protein interface self-assembled porous membrane is precisely regulated and controlled by regulating and controlling process parameters, and a new preparation solution of an alcohol soluble protein base membrane, which is more efficient and has a modifiable structure compared with an alcohol soluble protein membrane prepared by a traditional solvent evaporation method, is developed.