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Absorbable antibacterial alginate fibers

A technology of seaweed fiber and sodium alginate, applied in fiber treatment, fiber chemical characteristics, alginate man-made filament, etc., can solve the problems of cytotoxicity of antibacterial agents, complicated preparation process, and non-lasting antibacterial effect, and achieve good Antibacterial properties, simple preparation process effect

Inactive Publication Date: 2015-05-20
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antibacterial fibers prepared by adding organic or inorganic antibacterial agents often have problems such as complicated preparation process, poor binding fastness of antibacterial agents, long-lasting antibacterial effect, or cytotoxicity of some antibacterial agents, so there are still some problems in application. limitation

Method used

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  • Absorbable antibacterial alginate fibers
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Examples

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Effect test

Embodiment 1

[0022] A kind of absorbable antibacterial seaweed fiber, its technical scheme comprises the steps:

[0023] (1) Preparation of absorbable antibacterial seaweed fiber: Sodium alginate was dissolved in deionized water to obtain a sodium alginate solution with a mass percentage of 1.5% and a viscosity of 10000 mPa; a mass percentage of 4.0% calcium chloride The coagulation bath is used for conventional wet spinning at 20°C. The resulting as-spun fibers are post-stretched by 1 time, washed with water at 30°C, and then heat-treated at 100°C to obtain absorbable antibacterial seaweed fibers.

[0024] (2) Modification of absorbable antibacterial seaweed fiber: 1 g of the seaweed fiber obtained in step (1) was immersed in 200 mL of 1.0% glutaraldehyde solution by weight and cross-linked for 30 min. The breaking strength of the modified absorbable antibacterial algae fiber was 1.7 cN / dtex, and the breaking elongation was 4.5%. The antibacterial rates of the obtained seaweed fiber agai...

Embodiment 2

[0026] A kind of absorbable antibacterial seaweed fiber, its technical scheme comprises the steps:

[0027] (1) Preparation of absorbable antibacterial seaweed fiber: Dissolve sodium alginate in deionized water to obtain a 2.5% sodium alginate solution with a viscosity of 15000 mPa; 2.5% calcium chloride by mass It is a coagulation bath, and conventional wet spinning is carried out at 30°C. The resulting as-spun fibers are post-stretched 1.5 times, then washed at 40°C, and then heat-treated at 60°C to obtain absorbable antibacterial seaweed fibers.

[0028] (2) Modification of absorbable antibacterial seaweed fiber: 1 g of the seaweed fiber obtained in step (1) was immersed in 500 mL of 1.0% glutaraldehyde solution by weight and cross-linked for 60 min. The breaking strength of the modified absorbable antibacterial algae fiber was 2.0 cN / dtex, and the breaking elongation was 5.0%. The antibacterial rates of the obtained seaweed fiber against Staphylococcus aureus and Escheric...

Embodiment 3

[0030] A kind of absorbable antibacterial seaweed fiber, its technical scheme comprises the steps:

[0031] (1) Preparation of absorbable antibacterial seaweed fiber: Sodium alginate was dissolved in deionized water to obtain a 3.5% sodium alginate solution with a viscosity of 20,000 mPa; 1.5% calcium chloride by mass It is a coagulation bath, and conventional wet spinning is carried out at 55°C. The obtained as-spun fibers are post-stretched twice, then washed at 50°C, and then heat-treated at 60°C to obtain absorbable antibacterial seaweed fibers.

[0032] (2) Modification of absorbable antibacterial seaweed fiber: 1 g of the seaweed fiber obtained in step (1) was immersed in 1000 mL of 1.0% glutaraldehyde solution by weight and cross-linked for 120 min. The breaking strength of the modified absorbable antibacterial algae fiber was 1.9 cN / dtex, and the breaking elongation was 4.0%. The antibacterial rates of the obtained seaweed fiber against Staphylococcus aureus and Esche...

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Abstract

The invention discloses absorbable antibacterial alginate fibers. The alginate fibers are prepared by utilizing a wet-process spinning technology; and after being improved by a cross-linking agent, the fibers have good antibacterial property and have adjustable and controllable biological absorbability. According to the fibers, the preparation method is simple and pollution to the environment cannot be caused; and the alginate fibers have good biological degradation property and antibacterial property, and are expected to be used for a plurality of fields including wound dressings, absorbable surgery suture lines, periodontal regeneration pieces, anti-sticking membranes, absorbable masks and the like.

Description

technical field [0001] The invention belongs to the field of functional fiber materials, in particular to an absorbable antibacterial seaweed fiber and a preparation method thereof. Background technique [0002] Absorbable fiber is also called degradable fiber. This kind of material can be implanted into the human body or animal body. It can degrade by itself within a certain period of time and be completely absorbed by the implanted body tissue. It has a wide range of applications in the fields of medicine and cosmetics. However, due to the good biodegradability of this kind of fiber, when part of the material decomposes during use, it will cause damage and disintegration of the overall structure, resulting in reduced usability. On the other hand, when some of its materials decompose, the decomposition products may become a source of nutrition for microorganisms, which can easily lead to the growth of microorganisms. If this kind of fiber is used for contact with the human...

Claims

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Application Information

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IPC IPC(8): D06M15/13D06M13/123D06M13/352D06M13/328D01F9/04D01F1/02D01D5/06D01D5/12D01D10/06D01D10/02
Inventor 刘琳姚菊明马超华威
Owner ZHEJIANG SCI-TECH UNIV
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