Production of modified chitin and viscose fiber dope mixture and its product

A viscose fiber and spinning dope technology is applied in the manufacturing process and product field of modified chitin-chitosan and viscose fiber spinning dope blended materials, and can solve the problem of inability to meet antibacterial properties and biocompatibility. and other problems, to achieve the effects of easy degradation of antibacterial and deodorant properties, lower production costs, and good product performance-price ratio.

Inactive Publication Date: 2003-06-18
上海士林纤维材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a commonly used chemical fiber product, viscose fiber has the characteristics of good hygroscopicity and suitable wearing, but this kind of textile cannot meet people's requirements for antibacterial and biocompatibility. On the other hand, chitin - Chitosan has various properties such as biocompatibility, antibacterial deodorization and easy degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Soak 150 grams of chitin raw material with particle diameter less than 4mm in 50% NaOH aqueous solution for 120 minutes at 25°C. The product is press-filtered and crushed to make the weight three times that of chitin, then mixed with 1.5-1.8 kg of crushed ice, and then added with 50 cc of carbon disulfide. The reaction temperature is not higher than 10 ° C. The reaction is carried out in a sealed container. After several hours, After the carbon disulfide reaction is complete, chitin-chitosan xanthate can be obtained. The chitin-chitosan content in the viscous solution is 6.7-7.5%, and the NaOH content is 7.4-8.5%. Add 20 grams of the viscous solution prepared above to 210 grams of viscose fiber spinning stock solution (cellulose content 8%), mix evenly and filter, defoam, and adopt the conventional wet spinning method to obtain the modified carapace A fiber blend of vegan-chitosan and viscose.

Embodiment 2

[0013] With chitosan raw material at 25 ℃, in 45% NaOH aqueous solution, soak 60 minutes, the product is pulverized through press filtration and makes weight be three times of chitosan, then adds the carbon disulfide that is equivalent to chitosan weight 40%, in React at about 15°C for 120 minutes, then add crushed ice 15 times the weight of chitosan, stir for 10 hours, and dissolve to obtain a chitin-chitosan viscous solution that can be uniformly blended with the viscose spinning stock solution.

Embodiment 3

[0015] 400 grams of chitin was soaked in 8 liters of 42% NaOH aqueous solution, soaked at room temperature for 2 hours, and vacuumed during the soaking. Squeeze the impregnated product to remove residual alkali to make the weight 1200 grams, then quickly mix it with 4.0-5.0 kilograms of crushed ice to obtain a transparent aqueous dispersion, and then slowly add 150 grams of carbon disulfide after mixing fully. At the beginning, the initial temperature drops to -10°C, then the temperature rises slowly to 0°C, and is stirred thoroughly for 5 hours to obtain a viscous solution of chitin xanthate, which can be blended with viscose fiber spinning stock solution for spinning.

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Abstract

A mixture used for preparing fibres, film, or foam material is prepared through controlling the deacetylated level of chitin-chitosan to 10-85% of -20-40 deg.c in alkalizing procedure, baretting reacting to prepare chitin-chitosan xanthogenate, and mixing it with the dope of viscose fibre. Its advantages are low cost, high colourability, biocompatibility and degradability and good antibacterial deodouring action.

Description

technical field [0001] The manufacturing process and products of the modified chitin-chitosan and viscose fiber spinning dope blend material of the present invention relate to the modification treatment and application of polymers. Background technique [0002] As a commonly used chemical fiber product, viscose fiber has the characteristics of good hygroscopicity and suitable wearing, but this kind of textile cannot meet people's requirements for antibacterial and biocompatibility. On the other hand, chitin - Chitosan has various properties such as biocompatibility, antibacterial deodorization and easy degradation. Therefore, people have invested great enthusiasm in the research and development and products of chitin-chitosan modified and blended with viscose fiber spinning stock solution, in order to endow the blended material with good dyeability, biocompatibility, antibacterial Various properties such as deodorization and ease of degradation. Such as patent application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08
Inventor 吴学东何汉宏
Owner 上海士林纤维材料有限公司
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