Boron-containing chitosan/polyvinyl alcohol composite fiber, preparation method thereof and non-woven fabric

A polyvinyl alcohol and composite fiber technology, applied in non-woven fabrics, conjugated synthetic polymer rayon, fiber chemical characteristics, etc., can solve problems such as poor mechanical properties of composite fibers, achieve good biocompatibility, eliminate The effect of peculiar smell and excellent mechanical properties

Inactive Publication Date: 2017-03-15
SHANGHAI QUANYU BIO TECH SUIPING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a high-strength and high-modulus boron-containing chitosan / polyvinyl alcohol composite fiber, thereby solving the problem of poor mechanical properties of the composite fiber in the prior art

Method used

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  • Boron-containing chitosan/polyvinyl alcohol composite fiber, preparation method thereof and non-woven fabric
  • Boron-containing chitosan/polyvinyl alcohol composite fiber, preparation method thereof and non-woven fabric

Examples

Experimental program
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Embodiment 1

[0038]The boron-containing chitosan / polyvinyl alcohol composite fiber of this embodiment is mainly composed of the following components in mass percentage: 3% chitosan, 96.7% polyvinyl alcohol, and 0.3% boron. Among them, the degree of polymerization of polyvinyl alcohol is 1700-1800, the degree of alcoholysis ≥ 99%; the degree of deacetylation of chitosan > 93%.

[0039] The preparation method of the boron-containing chitosan / polyvinyl alcohol composite fiber of the present embodiment may further comprise the steps:

[0040] 1) Add polyvinyl alcohol to 50°C water and raise the temperature to 95°C, while stirring, add boric acid corresponding to the formula amount of boron, and stir until completely dissolved to obtain a polyvinyl alcohol solution; add the formula amount to the obtained polyvinyl alcohol solution Chitosan powder, fully stirred for 2 hours to mix, adjust the pH value of the system to 4.0, the temperature is 95 ° C, after filtration, stand for degassing for 6 ho...

Embodiment 2

[0044] The boron-containing chitosan / polyvinyl alcohol composite fiber of this embodiment is mainly composed of the following components in mass percentage: 4% chitosan, 95.7% polyvinyl alcohol, and 0.3% boron. Among them, the degree of polymerization of polyvinyl alcohol is 1700-1800, the degree of alcoholysis ≥ 99%; the degree of deacetylation of chitosan > 93%.

[0045] The preparation method of the boron-containing chitosan / polyvinyl alcohol composite fiber of the present embodiment may further comprise the steps:

[0046] 1) Add polyvinyl alcohol to 50°C water and raise the temperature to 95°C, while stirring, add boric acid corresponding to the formula amount of boron, and stir until completely dissolved to obtain a polyvinyl alcohol solution; add the formula amount to the obtained polyvinyl alcohol solution Chitosan powder, fully stirred for 2 hours to mix, adjust the pH value of the system to 6.0, and the temperature to 100 ° C, after filtration, stand for degassing fo...

Embodiment 3

[0050] The boron-containing chitosan / polyvinyl alcohol composite fiber of this embodiment is mainly composed of the following components in mass percentage: 5% chitosan, 94.6% polyvinyl alcohol, and 0.4% boron. Among them, the degree of polymerization of polyvinyl alcohol is 1700-1800, the degree of alcoholysis ≥ 99%; the degree of deacetylation of chitosan > 93%.

[0051] The preparation method of the boron-containing chitosan / polyvinyl alcohol composite fiber of the present embodiment may further comprise the steps:

[0052] 1) Add polyvinyl alcohol to 50°C water and raise the temperature to 95°C, while stirring, add boric acid corresponding to the formula amount of boron, and stir until completely dissolved to obtain a polyvinyl alcohol solution; add the formula amount to the obtained polyvinyl alcohol solution chitosan powder, fully stirred for 2 hours to mix, adjust the pH value of the system to 5.0, and the temperature to 95 ° C, after filtration, stand for degassing for...

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Abstract

The invention relates to a boron-containing chitosan / polyvinyl alcohol composite fiber, a preparation method thereof and a non-woven fabric and belongs to the technical field of polyvinyl alcohol composite fibers. The composite fiber is mainly prepared from, by mass, 1%-9.9% of chitosan, 90%-98.9% of polyvinyl alcohol and 0.1%-1.0% of boron element. The composite fiber is prepared by blending chitosan and polyvinyl alcohol to prepare a boron-containing spinning solution and performing alkaline-process and wet-process spinning. The boron-containing chitosan / polyvinyl alcohol composite fiber has excellent mechanical properties and anti-bacterial properties. The fineness of the composite fiber is 1.11-5 dtex, dry-breaking strength is 5.0-8.0 cN / dtex, the dry-breaking elongation at break is 7-20%, and the initial modulus is up to 100-200 cN / dtex. The staphylococcus aureus inhibiting rate of the non-woven fabric made of the composite fiber and with the fixed weight of 60-100 g / m<2> is 99.7% or above, and the escherichia coli inhibiting rate is 99.5% or above.

Description

technical field [0001] The invention belongs to the technical field of polyvinyl alcohol composite fibers, and in particular relates to a boron-containing chitosan / polyvinyl alcohol composite fiber. At the same time, it also relates to a preparation method of a boron-containing chitosan / polyvinyl alcohol composite fiber and a non-woven fabric made of the composite fiber. Background technique [0002] Chitosan is a white or off-white flaky or powdery solid, translucent, slightly pearly, tasteless, odorless, non-toxic, and can be stored for a long time in dry conditions. Chitosan is the only alkaline polysaccharide in nature. It not only has good biocompatibility, but also is non-toxic and easy to biodegrade. It is mainly used in medicine and health, and can be made into medical accessories, such as surgical sutures, non-woven Cloth, gauze, bandage, hemostatic cotton, etc.; chitosan can also be used in antitumor drugs, hemostatic agents, anticoagulants, etc. [0003] Chitosa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F8/18D01F1/10D01D1/02D01D5/06D01D5/12D04H1/4382D04H3/005
CPCD01F8/10D01D1/02D01D5/06D01D5/12D01F1/103D01F8/18D04H1/4382D04H3/005
Inventor 刘三民
Owner SHANGHAI QUANYU BIO TECH SUIPING
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