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Solvent preparation of cellulose fiber releasing anion and use thereof

A technology of cellulose fibers and negative ions, applied in the field of cellulose fibers, can solve problems such as environmental pollution, and achieve the effects of good mechanical strength, shortened production process, and easy recovery.

Inactive Publication Date: 2008-07-30
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to provide a solvent method preparation and application of cellulose fibers that release negative ions. By using ionic liquid as a solvent to dissolve cellulose and tourmaline powder to prepare composite fibers, it solves the problems caused by the production of cellulose fibers by the viscose method at present. To solve the problem of environmental pollution, and bring the function of releasing negative ions to cellulose to meet the production needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix 9 parts of crushed natural cellulose, 1 part of tourmaline powder and 100 parts of [BMIM]Cl (1-butyl-3-methylimidazole hydrochloride) ionic liquid evenly, and stir at 45°C for 24 hours to obtain spinning silk solution.

[0029] After the spinning solution is filtered and defoamed, it enters a coagulation bath containing 5% ionic liquid through a porous spinneret, and the temperature of the coagulation bath is 25°C. After 10% stretching, then through programs such as washing, bleaching, oiling, drying, etc., the spinning speed is 5 m / min to obtain fibers with a strength of 2.5 cN / dtex.

Embodiment 2

[0031] 10 parts of pulverized bacterial cellulose, 0.1 part of tourmaline powder and 90 parts of [BMIM]Cl ionic liquid were evenly mixed, and stirred at 100° C. for 120 hours to obtain a spinning solution.

[0032] After the spinning solution is filtered and defoamed, it enters the water coagulation bath through the porous spinneret, and the temperature of the coagulation bath is 15°C. After 3% stretching, then through programs such as washing, bleaching, oiling and drying, the spinning speed is 20 m / min to obtain a fiber with a strength of 3.3 cN / dtex.

Embodiment 3

[0034] Mix 1 part of crushed cotton, 0.2 part of tourmaline powder and 3 parts of [AMIM]Cl (1-allyl-3-methylimidazole hydrochloride) ionic liquid, and stir at 60°C for 80 hours to obtain spinning solution.

[0035] After the spinning solution is filtered and defoamed, it enters a coagulation bath containing 25% ionic liquid through a porous spinneret, and the temperature of the coagulation bath is 55°C. After 8% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 30 m / min, and the fiber with a strength of 2.1 cN / dtex is obtained.

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Abstract

The invention relates to a method of preparing a cellulose fibre releasing anions by using the solvent method and the application. The method has the following steps: firstly, the comminuted cellulose, tourmaline powder and addition agent are well mixed with an ironic liquid, dissolved at a temperature of 35 to 160 DEG C, deaerated for 1 to 120 hours and a homogeneous and stable spinning solution with a total solid content of 3 to 30 percent is formed, wherein, the mixed mass ratio of the tourmaline powder is 0.01 to 20 percent and the added mass ratio of the addition agent is 0 to 10 percent; secondly, the spinning solution is filtered, deaerated, spinned and solidified through a coagulation bath; and thirdly, a composite fibre of cellulose and tourmaline powder is obtained after the procedures of stretching, water cleaning, bleaching, oiling and drying. The composite fibre has the functions of releasing anions, generating far infrared radiation, generating biocurrent and suppressing bacteria and is applicable to the fields of garments, ornaments and medical textiles. The ironic liquid used in the invention has high production efficiency, is easy for callback and conforms to the requirement of a green production. The prepared composite fibre has excellent mechanical strength and mechanical property, and the fabric made of the composite fibre can release anions, resist bacteria and prevent mildew.

Description

technical field [0001] The invention belongs to the field of cellulose fibers, in particular to the solvent method preparation and application of cellulose fibers releasing negative ions. Background technique [0002] Among all substances in nature, cellulose not only has a large reserve, but also has a huge recovery capacity. Only very little cellulose is currently made into fibers. The amount of cellulose used to make fibers and films is less than 4% of the world's industrially produced cellulose. With the continuous deepening of human understanding of nature and the increasing shortage of resources such as oil, coal, and natural gas, the utilization of cellulose will gradually expand. Since cellulose fiber can be converted into water vapor and carbon dioxide by biodegradation or safe combustion, the cellulose fiber causes less environmental damage caused by waste. Therefore, the development of cellulose fibers is very necessary. Among them, the semi-finished product o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D1/10D01D5/06D01D5/12D02J1/22D01F2/00D01F1/10
Inventor 何春菊王庆瑞陈雪英孙俊芬
Owner DONGHUA UNIV
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