Biodegradable Resin Composition with Nucleating Agent for Nonwoven Spinning
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Solution Overview
Problem
Biodegradable resins face challenges in spinning ability due to poor miscibility with different properties, leading to issues like fiber-to-fiber fusion and breakage during the manufacturing of fibers or nonwoven fabrics.
Innovation Solution
A biodegradable resin composition comprising specific repeating units derived from diols and aliphatic and aromatic dicarboxylic acids, combined with an inorganic nucleating agent, achieving a crystallinity of 15% to 50%, which enhances spinning ability and suppresses fiber breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If various biodegradable resins are combined to improve spinning ability, then spinning ability is improved, but miscibility between resins is reduced, resulting in fiber-to-fiber fusion or fiber breakage
Solution Approach 1:
The patent changes the chemical composition parameters by specifying precise molar ratios of repeating units (first repeating unit from diol, second from aliphatic dicarboxylic acid, and optionally third from aromatic dicarboxylic acid) to achieve optimal miscibility and spinning performance simultaneously
Solution Approach 2:
The patent creates a composite biodegradable resin system combining multiple repeating units with specific chemical properties that work synergistically - the diol-derived units provide flexibility while the dicarboxylic acid-derived units provide strength and thermal stability, achieving both good spinning ability and miscibility
2Object-affected harmful factors
If biodegradable resin is used to address environmental issues, then biodegradability is improved, but spinning ability deteriorates compared to conventional materials
Solution Approach 1:
The patent adjusts the molecular structure parameters of the biodegradable resin by controlling the types and ratios of repeating units, thereby optimizing the balance between biodegradability and spinning performance
Solution Approach 2:
The patent introduces an inorganic nucleating agent that locally modifies the crystallization behavior of the biodegradable resin, improving fiber formation and spinning ability while maintaining the overall biodegradable character of the material
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 composition allows for the production of nonwoven fabrics with improved tensile strength, elongation, and controlled denier, while maintaining biodegradability and avoiding fiber fusion, suitable for manufacturing processes.
Implementation Method 1
the biodegradable resin composition has a crystallinity of 15% to 50% as measured using differential scanning calorimetry
Data Source
AI summary
The present invention relates to a biodegradable resin composition and a biodegradable nonwoven fabric including the same, and more particularly, the biodegradable resin composition includes a biodegradable resin including a first repeating unit derived from a diol having 2 to 4 carbon atoms and a second repeating unit derived from an aliphatic dicarboxylic acid having 2 to 6 carbon atoms; and an inorganic nucleating agent, wherein the biodegradable resin composition has a crystallinity of 15% to 50% as measured using differential scanning calorimetry.