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Blend fibers of alginate and sodium carboxymethyl cellulose and preparation method and application thereof

A technology of sodium carboxymethyl cellulose and blending fibers, applied in the field of fibers, can solve problems such as serious bonding and inconvenience in weaving, and achieve the effects of improving deficiencies, excellent hygroscopicity and physical and mechanical properties

Active Publication Date: 2013-04-24
WINNER MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blended fiber prepared by this process introduces the highly hygroscopic polymer CMCNA, which makes the resulting blended fiber extremely soft and has a high water absorption rate. Due to the capillary effect, the bonding between fibers is easy to occur, and the external mechanical force Under the action of this kind of bonding will be more serious, which will bring great inconvenience to weaving, so it is necessary to improve the spinning process conditions

Method used

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  • Blend fibers of alginate and sodium carboxymethyl cellulose and preparation method and application thereof
  • Blend fibers of alginate and sodium carboxymethyl cellulose and preparation method and application thereof

Examples

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preparation example Construction

[0034] Specifically, the above-mentioned preparation method mainly includes: configuring sodium alginate-CMCNA blended spinning solution; passing the blended spinning solution through a spinning pump and a filter and then entering the spinneret; The flow enters the coagulation bath to form primary mixed fibers, and then the blended fibers of alginate and CMCNA fibers are obtained after stretching, washing, splitting, drying, winding and other processes.

[0035] Specifically, in the above sodium alginate-CMCNA blended spinning solution, the mass ratio of sodium alginate to CMCNA is 3-19:1, preferably, the mass ratio of sodium alginate to CMCNA is 9-19:1. The mass percentage of sodium alginate in the above sodium alginate-CMCNA blended spinning solution is 2%-8%, preferably 3%-5%. The M / G ratio in the above sodium alginate is greater than 1. Further preferably, the M / G ratio is 1.5-1.8. Among them, the M / G ratio is the content ratio of the M unit to the G unit in sodium algin...

Embodiment 1

[0041] Select sodium alginate with a mass ratio of 95:5 and mix it with CMCNA powder, wherein the M / G ratio of sodium alginate is 1.5. The mixed powder was placed in a dissolution tank, and a certain amount of warm distilled water was added to prepare a mixed solution, the mass fraction of sodium alginate in the mixed solution was 3%. Add distilled water while stirring, so that sodium alginate and CMCNA powder are fully dissolved in distilled water and mixed evenly. When the mixed solution becomes clear and transparent, filter it, and then vacuum defoam for 24 hours to prepare uniform sodium alginate-CMCNA co- Blended silk solution A.

[0042] Using wet spinning process, such as figure 1 As shown, the above-mentioned sodium alginate-CMCNA blended spinning solution A is filtered through a spinning pump and a filter, then enters the spinneret 1, and then is pressed out from the spinneret hole to form a thin stream of stock solution, which enters the 35°C In the calcium chlorid...

Embodiment 2

[0045] The mass fraction of sodium alginate in the mixed solution in Example 1 was changed to 5%, and other conditions and steps were basically the same as in Example 1, and the blended fiber B of alginate and CMCNA was prepared.

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Abstract

The invention relates to the fiber field and discloses blend fibers of alginate and sodium carboxymethyl cellulose and a preparation method and application of the blend fibers. The blend fibers are formed by preparation from alginate and sodium carboxymethyl cellulose, and in preparation, the mass ratio of alginate to sodium carboxymethyl cellulose is 3-19:1. The preparation method of the blend fibers includes: preparing a blend spinning solution, enabling the blend spinning solution to pass through a spinning nozzle and then enter a coagulation bath, and then obtaining the blend fibers through drafting, washing, spinning dividing, drying and winding. Due to the fact the unique spinning dividing step is added to the process, the problem that fibers are prone to bonding with each other is solved, and the spinning dividing step is favorable for subsequent product processing. Compared with fibers of a single component, the blend fibers has the respective advantages of two kinds of single components, overcomes the defects caused by the single component and is better in both hygroscopicity and physical mechanical performance. Dressings made from the blend fibers can better meet the requirements of clinical medicine.

Description

technical field [0001] The present application relates to the field of fibers, in particular to a blended fiber of alginate and sodium carboxymethyl cellulose, its preparation method and application. Background technique [0002] Alginic acid is a linear polysaccharide extracted from natural seaweed, which is composed of two components: β-D-mannuronic acid (referred to as M unit) and α-L-guluronic acid (referred to as G unit). In applications, alginic acid is often used in the form of alginate, such as sodium alginate, calcium alginate, etc. Carboxymethylcellulose sodium (CMCNA, also known as CMCNa or CMC for short) is a water-soluble cellulose ether in which the hydrogen atoms of the hydroxyl groups on the cellulose glucose ring are replaced by carboxymethyl groups. Fibers developed from sodium alginate or CMCNA have the advantages of biodegradability, high bioactivity, and good compatibility with the human body, and are very suitable for use as medical fibers. They are tw...

Claims

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Application Information

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IPC IPC(8): D01F8/02A61L15/28
Inventor 李建全陶荣王欢宋海波
Owner WINNER MEDICAL CO LTD
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