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Multilayer composite covering yarn based on hydrophilic modified chitosan fibers and fabric

A technology of chitosan fiber and hydrophilic modification, applied in fabrics, yarns, textiles, etc., can solve the problem of limited liquid absorption and adhesion of composite core-spun yarns, increased manufacturing costs of calcium alginate fibers, and sizing process Complicated problems, to achieve rapid and efficient hemostasis, prevent blood extravasation, and ensure high-intensity effects

Active Publication Date: 2022-02-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite core-spun yarn obtained in this way has limited liquid absorption and adhesion, so the rapid and efficient hemostasis effect needs to be improved; moreover, the sizing process is complicated, the steps are cumbersome, and there may be uneven sizing that affects the actual effect; the added alginic acid Calcium fiber adds to manufacturing costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Multilayer composite covering yarn based on hydrophilic modified chitosan fibers and fabric
  • Multilayer composite covering yarn based on hydrophilic modified chitosan fibers and fabric
  • Multilayer composite covering yarn based on hydrophilic modified chitosan fibers and fabric

Examples

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Effect test

preparation example Construction

[0040] The preparation method of multi-layer composite core-spun yarn comprises the steps:

[0041] S1. performing the opening, carding and roving operations on the hydrophilic modified chitosan fiber successively to obtain raw slivers of the hydrophilic modified chitosan fiber;

[0042] S2. the hydrophilic modified chitosan fiber raw sliver that step S1 obtains is used as the cortex, and the strong filament or yarn is used as the core layer, and the core-spun yarn is spun to obtain a double-layer composite core-spun yarn;

[0043] S3. The chitosan fibers are sequentially opened and carded to obtain chitosan fiber slivers; then the chitosan fiber slivers are protonated and modified with an acid solution to obtain protonated chitosan fiber slivers;

[0044] S4. Use the double-layer composite core-spun yarn obtained in step S2 as the core layer, and use the protonated chitosan fiber raw sliver obtained in step S3 as the cortex, and perform friction core-spun spinning to obtain a...

Embodiment 1

[0065] A kind of three-layer composite core-spun yarn based on hydrophilic modified chitosan fiber, prepared through the following steps:

[0066] (1) Preparation of carboxylated chitosan fiber (CECS)

[0067] Add 175g of acrylic acid to 800mL of ethanol, put 50g of chitosan fiber (CS) into the reaction solution, and shake and react in a constant temperature water bath at 60°C for 48h;

[0068] After the reaction finishes, use the lye prepared by sodium hydroxide to alkali-wash the carboxylated chitosan fiber to strong alkalinity; The sugar fibers were washed until neutral, and finally washed three times with ethanol; dried in an oven at 50° C. to obtain carboxylated chitosan fibers.

[0069] (2) Preparation of composite core-spun yarn

[0070] 21) Get the above-mentioned carboxyethyl chitosan fiber 100-200g, and open it by an opener to form a uniform chitosan fiber network, reducing the weight per unit volume of the fiber raw material;

[0071] 22) Carding the web by a car...

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Abstract

The invention provides a multilayer composite covering yarn based on hydrophilic modified chitosan fibers and a fabric. The multi-layer composite covering yarn sequentially comprises a protonated chitosan fiber layer, a hydrophilic modified chitosan fiber layer and a strong filament or yarn layer from outside to inside. Hydrophilic modified chitosan fiber card slivers serve as a skin layer, strong filaments or yarns serve as a core layer, and core-spun yarn spinning is carried out to obtain double-layer composite core-spun yarn; and the outer layer of the double-layer composite core-spun yarn is coated with the protonized chitosan fiber card slivers through a friction core-spun spinning process to obtain a multi-layer composite core-spun yarn, and further the multi-layer composite core-spun yarn is weaved into a high-strength hemostatic fabric. By utilizing the electropositive property of the protonated chitosan fiber layer on the outermost layer, the high liquid absorption property of the hydrophilic modified chitosan fiber layer on the middle layer and the high strength property of the filaments on the core layer, the hemostatic material can be tightly adhered to a bleeding wound surface, meanwhile, moisture in blood is quickly absorbed, and high wet strength is kept, so that quick and efficient hemostasis is realized.

Description

technical field [0001] The invention relates to the technical field of medical material preparation, in particular to a multi-layer composite core-spun yarn and fabric based on hydrophilic modified chitosan fibers. Background technique [0002] Wound hemostasis is a crucial step in emergency medical care. Effective and rapid hemostasis is essential for surgical procedures and emergency trauma, especially those caused on battlefields and other complex situations. At present, gel-forming fibers are commonly used to manufacture wound hemostatic fabrics. Such fibers are usually derived from polysaccharides, such as alginate fibers, chitosan fibers, and the like. [0003] Chitosan has excellent biocompatibility, antibacterial and hemostatic properties, and biodegradable characteristics, making it widely used in tissue engineering such as nerve conduits, vascular stents, or wound dressings. Chitosan also has good fiber-forming properties, so it is often made into hemostatic mate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D02G3/04D02G3/36D03D15/20D03D15/283D03D15/47A61L24/04A61L24/08A61L24/00A61L15/26A61L15/28A61L15/44
CPCD02G3/045D02G3/36D03D15/20D03D15/283D03D15/47A61L24/046A61L24/08A61L24/0015A61L15/26A61L15/28A61L15/44A61L2400/04A61L2300/232A61L2300/418D10B2331/04C08L67/04C08L5/08
Inventor 周应山万婷婷孙浩淼刘学顺李乐珩杨红军顾绍金徐卫林
Owner WUHAN TEXTILE UNIV