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Method for preparing chitin/acrylic composite fiber by using ionic liquid as solvent

A composite fiber and ionic liquid technology, which is applied in spinning solution preparation, fiber treatment, fiber chemical characteristics, etc., can solve the problems of human body affinity, poor hydrophilicity, and no disclosure of static electricity, and achieve good biological performance and The effect of physical and mechanical properties, low production cost, and good solubility

Active Publication Date: 2011-11-16
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyacrylonitrile fiber, commonly known as acrylic fiber, is a synthetic fiber with excellent warmth retention, excellent dyeability, and no moth and mildew properties. After dyeing, it can obtain brighter colors than wool. Polyacrylonitrile fiber is widely used It is used to make wool-like products, so polyacrylonitrile fiber is also called artificial wool, but polyacrylonitrile fiber also has many disadvantages: poor hydrophilicity, resulting in static electricity in dry weather and poor human affinity
[0011] However, the prior art has not yet disclosed a composite fiber for preparing chitin and acrylic sheath-core structure and a preparation method thereof. Although polyacrylonitrile-chitin composite fibers have been disclosed, the composite fiber is not a skin-core structure, and due to Both chitin and polyacrylonitrile have polar groups, and chitin can only be dissolved in some solvents of polyacrylonitrile, so this composite fiber can only improve the hydrophilicity, antistatic properties and compatibility with the human body of polypropylene fiber. affinity antibacterial

Method used

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  • Method for preparing chitin/acrylic composite fiber by using ionic liquid as solvent
  • Method for preparing chitin/acrylic composite fiber by using ionic liquid as solvent
  • Method for preparing chitin/acrylic composite fiber by using ionic liquid as solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Mix chitin and ionic liquid evenly, dissolve at 50°C for 50 hours, and form a uniform and stable spinning stock solution after defoaming, the concentration of the spinning stock solution is 9%. The acrylic fiber and the ionic liquid are evenly mixed, dissolved at a temperature of 50°C for 50 hours, and a uniform and stable spinning stock solution is formed after defoaming, and the concentration of the spinning stock solution is 15%. The chitin spinning stock solution is delivered to the cortex inlet metering pump through the pre-filter, and the acrylic fiber spinning stock solution enters the core layer metering pump through the pre-filter. The delivery volume of the metering pump at the cortex inlet / the delivery volume of the metering pump at the core layer inlet is 3 / 7;

[0062] The composite raw liquid extruded through the skin-core composite spinneret is spun, formed and stretched to obtain the skin-core type chitin / acrylic fiber composite fiber. The coagulation ba...

Embodiment 2

[0064] Mix chitin and ionic liquid uniformly, dissolve at 150° C. for 1 hour, and form a uniform and stable spinning stock solution after defoaming. The concentration of the spinning stock solution is 7%. The acrylic fiber and the ionic liquid are evenly mixed, dissolved at a temperature of 150°C for 1 hour, and a uniform and stable spinning stock solution is formed after defoaming, and the concentration of the spinning stock solution is 15%. The chitin spinning stock solution is delivered to the cortex inlet metering pump through the pre-filter, and the acrylic fiber spinning stock solution enters the core layer metering pump through the pre-filter. The delivery volume of the metering pump at the cortex inlet / the delivery volume of the metering pump at the core layer inlet is 3 / 7;

[0065] The composite raw liquid extruded through the skin-core composite spinneret is spun, formed and stretched to obtain the skin-core type chitin / acrylic fiber composite fiber. The coagulation...

Embodiment 3

[0067] Mix chitin and ionic liquid uniformly, dissolve at 100° C. for 5 hours, and form a uniform and stable spinning stock solution after defoaming. The concentration of the spinning stock solution is 15%. The acrylic fiber and the ionic liquid are evenly mixed, dissolved at 100° C. for 3 hours, and a uniform and stable spinning stock solution is formed after defoaming, and the concentration of the spinning stock solution is 15%. The chitin spinning stock solution is delivered to the cortex inlet metering pump through the pre-filter, and the acrylic fiber spinning stock solution enters the core layer metering pump through the pre-filter. The delivery volume of the metering pump at the cortex inlet / the delivery volume of the metering pump at the core layer inlet is 5 / 5;

[0068] The composite stock solution extruded through the skin-core composite spinneret is spun and stretched to obtain the skin-core type chitin / acrylic fiber composite fiber. The coagulation bath is an aque...

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Abstract

The invention discloses chitin / acrylic composite fiber with a skin-core structure and a manufacturing method thereof. Acrylic fiber spinning solution is used as a core layer, chitin or mixed spinning solution of chitin and acrylic fiber is used as a skin layer, the solution is extruded from a skin-core composite spinneret assembly, and composite fiber is obtained through spinning and forming, drafting and water washing; and ionic liquid is used as solvent for the preparation of composite fiber spinning solution, coagulating bath is formed by water or mixture of water and ionic liquid, and theconcentration of ionic liquid in the coagulating bath is 0 to 60 percent. The composite fiber has the advantages that the biological functions are good because the chitin is used in the skin layer, the physical and mechanical performance is good because the acrylic fiber with good fiber forming property and draftability is used in the core layer and the production cost is low; and the composite fiber can be widely used as textile raw material for disposable or medical use, medical fiber, antibacterial fiber and the like.

Description

technical field [0001] The invention relates to a preparation method of a chitin / acrylic fiber composite fiber, in particular to a preparation method of a chitin / acrylic fiber composite fiber with an ionic liquid as a solvent and a sheath-core structure. Background technique [0002] Polyacrylonitrile fiber, commonly known as acrylic fiber, is a synthetic fiber with excellent warmth retention, excellent dyeability, and no moth and mildew properties. After dyeing, it can obtain brighter colors than wool. Polyacrylonitrile fiber is widely used It is used to make wool-like products, so polyacrylonitrile fiber is also called artificial wool, but polyacrylonitrile fiber also has many disadvantages: poor hydrophilicity, easy to charge static electricity in dry weather and poor human affinity. At the same time, the fiber itself does not have antibacterial properties. [0003] Chitin is a linear polysaccharide biopolymer, which widely exists in the shells of insects and aquatic cru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/34D01D1/02D01F8/08D01F8/18
Inventor 骆强孙玉山门爽李晓俊陆伊伦徐纪刚
Owner CHINESE TEXTILE ACAD