Electrospinning System for Gradient Nanofiber Control
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Solution Overview
Problem
Existing electrospinning technologies face challenges in achieving precise control over fiber diameter distribution and porous structure formation, which limits the flexibility and effectiveness of nanofiber and microfiber applications in materials with varying properties and applications.
Innovation Solution
A device and system utilizing a spinning electrode with an electric conducting string, a solution applicator, and a collection electrode to generate an electrostatic field for precise control of fiber diameter and structure, allowing for the deposition of multiple layers of nanofibers and microfibers with gradient properties onto a substrate, including interlaced structures and functionalized fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional electrospinning technology is used, then fiber production can be achieved, but precise control over fiber diameter distribution and porous structure is limited
Solution Approach 1:
The patent employs a dynamic electrospinning system where the collector electrode moves relative to the spinneret at controlled speeds, enabling real-time adjustment of fiber deposition parameters. This dynamic configuration allows precise control over fiber diameter and porous structure while maintaining flexibility to produce different fiber architectures by simply adjusting motion parameters rather than redesigning the entire system
Solution Approach 2:
The invention utilizes multiple controllable parameters including voltage amplitude, collector speed, solution flow rate, and distance between electrodes to independently tune fiber diameter, porosity, and layer structure. By changing these parameters during the electrospinning process, the system achieves precise control over fiber properties and can easily adapt to produce different material configurations for various applications
2Adaptability or versatility
If multiple layers with gradient properties are produced, then material functionality is improved, but production time and complexity increase
Solution Approach 1:
The patent implements a continuous electrospinning process where multiple layers with gradient properties are deposited in a single uninterrupted operation. The collector electrode continuously moves through different voltage zones and solution streams, enabling the formation of complex multilayer gradient structures without stopping or repositioning the substrate, thereby maintaining high production efficiency while achieving sophisticated material architectures
Solution Approach 2:
The electrospinning system is divided into multiple independent zones, each with its own solution applicator and voltage configuration. This segmentation allows different polymeric solutions to be applied simultaneously to different sections of the moving collector, creating distinct layers with gradient properties in parallel, thus reducing overall production time compared to sequential layer-by-layer deposition
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
Enables the production of materials with controlled fiber diameter and porous structure, facilitating applications such as filtration, wound dressing, and protective clothing by reducing production time and costs, while providing flexibility in fiber composition and properties.
Implementation Method 1
a collection electrode arranged with respect to the at least one spinning electrode for generation of an electrostatic field which induces an electrospinning zone between the collection and spinning electrodes
Implementation Method 2
the polymeric solution applied onto the electric conduction string is energized to be electrospun into nanofibers and/or microfibers
Implementation Method 3
onto which the nanofibers and/or microfibers are directly deposited
Data Source
AI summary
It provides a device for applying nanofibers and/or microfibers onto a substrate (S). It also provides a system comprising a plurality of such devices which are controlled to operate independently. The system allows for depositing of a gradient material in various parameters including material thickness, fiber pore size, fiber diameter, fiber content and the like. It also relates to a method for applying nanofibers and/or microfibers onto a substrate (S).