Quantum Rod Polymer Fiber Membrane Electrospinning Orientation
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Solution Overview
Problem
Existing methods for preparing quantum rod/polymer fiber membranes face challenges such as complicated operations, poor controllability, and limited directional arrangement of quantum rods, making it difficult to achieve high polarization performance.
Innovation Solution
The method involves preparing a quantum rod solution and a polymer solution, combining them to form an electrospinning precursor solution with controlled quantum rod concentration, and then using electrospinning to create a membrane with directional arrangements of quantum rods by adjusting voltage and receiving distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mechanical stretching method is used to arrange quantum rods, then directional arrangement is achieved, but material loss is large and orientation effect is limited
Solution Approach 1:
The patent replaces the mechanical stretching method with an electric field induction method. Quantum rods are arranged directionally by applying an external electric field during the membrane formation process, eliminating the need for mechanical stretching and associated material losses.
Solution Approach 2:
The patent changes the arrangement mechanism from mechanical force to electric field interaction. By controlling the electric field parameters (strength, direction, duration), quantum rods can be precisely oriented without mechanical contact, reducing material loss and improving orientation efficiency.
2Manufacturing precision
If electric field induction method is used to arrange quantum rods, then directional arrangement is improved, but operation process becomes complicated
Solution Approach 1:
The patent combines the quantum rod arrangement process with the membrane formation process into a single integrated step. The electric field is applied during electrospinning or membrane fabrication, so that directional arrangement and membrane production occur simultaneously, simplifying the overall operation process.
Solution Approach 2:
The quantum rods themselves respond to the electric field by self-orienting along the field lines during membrane formation. This self-arrangement mechanism eliminates the need for complex external positioning systems or multi-step alignment procedures.
3Ease of operation
If quantum rods are freely distributed, then material usage is simple, but polarization performance is poor due to lack of orientation
Solution Approach 1:
The patent applies the electric field during the membrane formation process to pre-orient quantum rods before the membrane solidifies. This preliminary arrangement ensures that quantum rods are directionally aligned throughout the membrane structure, achieving both simple material usage and high polarization performance.
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 approach results in a quantum rod/polymer fiber membrane with high polarization performance, simple operation, and adjustable fiber diameter, suitable for various high molecular polymers, and can be processed into a transparent film for optical applications.
Implementation Method 1
the electrospinning technology can make the polymer solution charged with static electricity in the electrostatic field
Implementation Method 2
When the externally applied static voltage increases to beyond a certain critical value, the electric field force applied to the polymer solution overcomes the surface tension and the viscous force
Implementation Method 3
the electric field force applied to the polymer solution overcomes the surface tension and the viscous force
Implementation Method 4
the long axes of the plurality of quantum rods and the axes of the plurality of dipole side chains are arranged in a direction substantially parallel to the electric field
Data Source
AI summary
Disclosed is a method for preparing a quantum rod/polymer fiber membrane by using electrospinning technique. The method comprises the following steps: (1) preparing a quantum rod solution; (2) preparing a polymer solution, and adding the quantum rod solution obtained in step (1) into the polymer solution so as to form an electrospinning precursor solution with a volume concentration of the quantum rods of 5%-80%; and (3) adding the electrospinning precursor solution into an electrospinning device, regulating the voltage of a generator and the receiving distance, and then performing electrospinning to prepare the quantum rod/polymer fiber membrane. By adjusting the concentration of the quantum rod solution and parameters in the electrospinning process, the method realizes directional arrangements of the quantum rods in the electrospinning process, thereby obtaining the quantum rod/polymer fiber membrane with high degree of polarization performance.