Modified Polyester Staple Fiber with Natural Antibacterial Agents
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Solution Overview
Problem
Existing polyester staple fibers lack simultaneous antibacterial performance, mechanical performance, air permeability, and moisture absorption performance, making them inadequate for modern hygiene standards.
Innovation Solution
A modified polyester staple fiber is developed by incorporating a nanocomposite material containing tea polyphenol, naringin, or emodin, combined with porous nanomaterials like montmorillonite, zeolite, or TiO2 microspheres, which are dissolved and mixed with polyethylene terephthalate chips during the extrusion process to enhance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional polyester staple fiber is used, then mechanical performance and chemical performance are maintained, but antibacterial performance is insufficient
Solution Approach 1:
The patent combines polyester staple fiber with natural antibacterial substances (tea polyphenol, naringin, or emodin) to create a composite fiber material. This composite structure integrates the mechanical properties of polyester with the antibacterial properties of natural compounds, resolving the contradiction between maintaining mechanical performance and achieving antibacterial functionality.
Solution Approach 2:
The patent uses coupling agents as intermediaries to bridge the polyester fiber and natural antibacterial substances. The coupling agent facilitates uniform dispersion and strong bonding between the hydrophobic polyester and hydrophilic natural compounds, enabling effective antibacterial performance while maintaining fiber integrity.
2Reliability
If natural antibacterial substances are added to polyester fiber, then antibacterial performance is improved, but uniform dispersion and retention of active compounds deteriorate
Solution Approach 1:
The coupling agent serves as a mediator that chemically bonds to both the polyester fiber and natural antibacterial substances. This intermediary connection ensures uniform dispersion of the active compounds throughout the fiber matrix and prevents leaching during washing, maintaining both antibacterial efficacy and compositional stability.
Solution Approach 2:
The patent optimizes processing parameters including coupling agent concentration, mixing time, and drying conditions to achieve optimal dispersion and retention. By carefully controlling these parameters, the patent maintains uniform distribution of antibacterial compounds while preventing aggregation or loss during manufacturing and subsequent washing.
3Adaptability or versatility
If multiple functional requirements are met simultaneously, then comprehensive performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines multiple functional requirements into a single integrated manufacturing process. The coupling agent treatment and antibacterial substance incorporation are performed in one continuous extrusion process rather than separate steps, achieving comprehensive performance (mechanical, antibacterial, and dispersion properties) while minimizing manufacturing complexity.
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 modified fibers exhibit improved antibacterial performance, mechanical strength, air permeability, and moisture absorption, maintaining antibacterial efficacy even after repeated washing, while ensuring uniform dispersion and retention of active compounds.
Implementation Method 1
adding the organic compound into water to form a solution
Implementation Method 2
adding a porous nanomaterial into the solution to form a mixture
Implementation Method 3
spinning the mixed composite modifier and the melt of the polyethylene terephthalate chips to provide the modified polyester staple fiber
Data Source
AI summary
A modified polyester staple fiber and a preparation method of the modified polyester staple fiber are provided. The modified polyester staple fiber contains a modified nanocomposite material including an organic compound, the organic compound including one of tea polyphenol, naringin, and emodin. The organic compound is in a weight percentage range of approximately 0.1%-5% based on a total weight of the modified polyester staple fiber.