Chitose graft alginate fibre, its production and use

A seaweed fiber, chitosan technology, applied in wet spinning, alginate man-made filaments and other directions, can solve the problems of wound infection, limit the wide application of seaweed fibers, etc., achieve high safety, good application prospects, The effect of rich source of raw materials

Inactive Publication Date: 2007-04-04
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the gel is not removed in time, it can absorb a large number of bacteria and cause

Method used

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  • Chitose graft alginate fibre, its production and use
  • Chitose graft alginate fibre, its production and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: get 30g sodium alginate and be dissolved in 970mL distilled water and obtain the sodium alginate solution of 3% (mass percentage); Get an appropriate amount of chitosan, be dissolved in the acetic acid solution of 1% (mass percentage) to obtain 2% (mass percentage) percentage) chitosan solution; prepare 5% calcium chloride solution. After the sodium alginate solution is filtered and defoamed under reduced pressure, chitosan is prepared by wet spinning in a coagulation bath composed of a mixture of chitosan solution and calcium chloride solution with a volume ratio of 3:1 at room temperature. Sugar grafted seaweed fiber, the fiber stretch rate can reach 30%. And it can be further used as fiber raw material to make non-woven gauze for wound dressing.

Embodiment 2

[0025] Embodiment 2: get 40g sodium alginate and be dissolved in 960mL distilled water and obtain 4% (mass percentage) sodium alginate solution; Take appropriate amount of chitosan, dissolve in the acetic acid solution of 1.5% (mass percentage) to obtain 4% shell Polysaccharide solution; prepare 4% calcium chloride solution. After the sodium alginate solution is filtered and defoamed under reduced pressure, chitosan is prepared by wet spinning in a coagulation bath composed of a mixture of chitosan solution and calcium chloride solution with a volume ratio of 2:1 at room temperature. Sugar grafted seaweed fiber, the fiber stretch rate can reach 20%. And it can be further used as fiber raw material to make non-woven gauze for wound dressing.

Embodiment 3

[0026] Embodiment 3: get 50g sodium alginate and be dissolved in 950mL distilled water and obtain the sodium alginate solution of 5% (mass percentage); Get an appropriate amount of chitosan, be dissolved in the acetic acid solution of 2% (mass percentage) to obtain 6% (mass percentage) percentage) chitosan solution; prepare 2% (mass percentage) calcium chloride solution. After the sodium alginate solution is filtered and defoamed under reduced pressure, chitosan is prepared by wet spinning in a coagulation bath composed of a mixture of chitosan solution and calcium chloride solution with a volume ratio of 1:1 at room temperature. Sugar grafted seaweed fiber, the fiber stretch rate can reach 10%. And it can be further used as fiber raw material to make non-woven gauze for wound dressing.

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Abstract

This invention diclosed the use and its preparation method of seaweed fiber grafted with chitosan. In the method suitable quality of chitosan was dissolved in the acetic acid solution with concentration of 1% ~ 2 %( w/w) to get chitosan solution of 2% -6 %( w/w). After preparation the 2% -5% of calcium chloride solution, these two solutions was fully mixed by 25% ~ 75% of chitosan solution in the mixture solution which, as a coagulation bath,used to make 3% -5% of the sodium alginat change into fibers. The fibers, after being stretched with tensile rate of 10% to 30% and dried, to change into seaweed fiber grafted with the chitosan. Because of certain chitosan coated on the surface, this fiber is antibacterial, hygroscopicity, non-toxic, harmless, safe and biodegradable, so that it can be largely apllied in medicine, environmental protection and other fields, especially for the manufacture of gauze used for wound dressings.

Description

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Claims

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Application Information

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Owner QINGDAO UNIV
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