High-Elastin Fibrous Material via Crosslinked Electrospinning
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Solution Overview
Problem
Existing methods fail to produce tunable elastin-based biomaterials with a high elastin content without using non-biological polymers, limiting their scalability and applicability in medical applications.
Innovation Solution
A fibrous material composed of a mixture of elastin and biological materials like gelatin or collagen, produced through electrospinning, with a high elastin content (75% or more) and stabilized by covalent cross-linking, enabling scalable production and maintaining structural integrity in aqueous conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pure elastin is used for electrospinning, then the biomaterial has high biocompatibility and biodegradability, but elastin is insoluble in all organic and inorganic solvents making it incompatible with electrospinning
Solution Approach 1:
The patent uses formic acid as an intermediary solvent to dissolve elastin, which is then crosslinked with glutaraldehyde to form a soluble derivative. This intermediary approach allows elastin to be processed by electrospinning while maintaining its biocompatible properties.
Solution Approach 2:
The patent chemically modifies elastin by crosslinking it with glutaraldehyde, changing its molecular structure from insoluble macromolecular elastin to a soluble derivative that can be processed by electrospinning while retaining biocompatibility.
2Manufacturing precision
If elastin is blended with synthetic materials like PLGA to achieve fibers below 1 μm, then fiber diameter control is improved, but the material loses purity and uses non-biological polymers
Solution Approach 1:
The patent uses formic acid as a temporary processing solvent that is later removed or neutralized, allowing pure elastin to be electrospun without permanent synthetic polymer blends. The formic acid serves its purpose during processing and is then discarded.
Solution Approach 2:
The patent modifies the electrospinning parameters and uses chemical crosslinking with glutaraldehyde to enable pure elastin (with minimal auxiliary substances) to form fine fibers below 1 μm diameter, eliminating the need for synthetic polymer blends.
3Ease of operation
If high elastin content (75% or more) is achieved without auxiliary polymers, then material purity is improved, but production scalability and tunability are limited
Solution Approach 1:
The patent performs preliminary crosslinking of elastin with glutaraldehyde before electrospinning, creating a soluble derivative that can be processed at scale. This preliminary chemical modification enables subsequent scalable production of pure elastin fibers.
Solution Approach 2:
The patent creates a composite system where elastin is crosslinked with glutaraldehyde to form a processable derivative, enabling high-purity elastin fibers to be produced by electrospinning at scalable quantities while maintaining tunable properties.
4Ease of manufacture
If elastin is processed into soluble derivatives, then electrospinning compatibility is improved, but the structural integrity and stability in aqueous conditions may be compromised
Solution Approach 1:
The patent uses controlled chemical crosslinking with glutaraldehyde to modify elastin's molecular structure, creating a soluble derivative that maintains structural integrity in aqueous conditions while enabling electrospinning processing.
Solution Approach 2:
The patent uses formic acid as an intermediary solvent for processing, followed by glutaraldehyde crosslinking to stabilize the elastin structure. This intermediary approach ensures both electrospinning compatibility and structural stability in the final product.
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
The material exhibits elastic properties, stability in water, and resistance to proteolytic enzymes, suitable for medical applications such as wound treatment and tissue engineering, while being cost-effective due to the use of readily available biological materials.
Implementation Method 1
electrospinning, which is a fiber-forming process utilizing an electric field. A high voltage is applied between a grounded collector and a capillary containing a polymer solution
Implementation Method 2
Spinneret (the capillary or wire) drops are formed from which electrified thin fluid jets are then ejected
Implementation Method 3
stabilized by covalent cross-linking, enabling scalable production and maintaining structural integrity in aqueous conditions
Data Source
Figure 1A~1D
AI summary
The invention relates to a fibrous material comprising: (a) elastin and/or tropoelastin in an amount of 50 wt% or more, referring to the fibrous material, and (b) a material of biological origin in an amount of greater 0 wt% to 50 wt%, referring to the fibrous material, its use and a method for its preparation.