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A kind of sizing method of chitosan fiber cross-linked carboxymethyl chitosan

A technology of carboxymethyl chitosan and chitosan fiber, which is applied in the sizing field of chitosan fiber cross-linked carboxymethyl chitosan, can solve the problem of uneven distribution of slurry, increase of slurry viscosity, reports, etc. problem, to achieve the effect of improving mechanical strength, low cost and simple process

Active Publication Date: 2019-10-29
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method adds a cross-linking agent to the slurry, the cross-linking reaction occurs before sizing, and the viscosity of the slurry increases, which is not conducive to sizing. The product prepared by this method is unevenly distributed and the mechanical strength of the product is improved. limited
This problem can be avoided if cross-linking can be carried out after sizing, but there is no relevant research report on cross-linking after sizing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for sizing chitosan fiber cross-linked carboxymethyl chitosan, first stirring and dissolving carboxymethyl chitosan in water at a speed of 200rpm, and then vacuum defoaming to prepare cross-linked carboxymethyl chitosan Polycan sizing agent, wherein the mass ratio of carboxymethyl chitosan and water is 3:120, and then the chitosan fiber is immersed in the cross-linked carboxymethyl chitosan sizing agent and evenly sized and baked at a temperature of 55°C Finally, immerse the chitosan fibers after sizing at a temperature of 15°C and a concentration of 3wt% calcium chloride aqueous solution for cross-linking for 8min, and dry at a temperature of 55°C to obtain carboxymethyl chitosan sizing chitosan Sugar fiber, carboxymethyl chitosan sizing The breaking strength of chitosan fiber increased by 78.2% compared with chitosan fiber, and the knot strength increased by 67.5%.

[0028] The carboxymethyl chitosan sized chitosan fiber is spray-coated with a colorant, dried...

Embodiment 2

[0030] A kind of sizing method of chitosan fiber cross-linked carboxymethyl chitosan, firstly carboxymethyl chitosan is stirred and dissolved in water at a speed of 220rpm, and then cross-linked carboxymethyl chitosan is obtained through vacuum defoaming treatment Polycan sizing agent, wherein the mass ratio of carboxymethyl chitosan and water is 5:100, then the chitosan fiber is immersed in the cross-linked carboxymethyl chitosan sizing agent and evenly sized and baked at a temperature of 45°C Finally, immerse the sized chitosan fibers in an aqueous solution of calcium dihydrogen phosphate with a concentration of 9 wt% at a temperature of 40° C. Polysan fiber, carboxymethyl chitosan sizing The breaking strength of chitosan fiber increased by 83.1% compared with chitosan fiber, and the knot strength increased by 88.4%.

[0031] The carboxymethyl chitosan sized chitosan fiber is spray-coated with a colorant, dried, then immersed in medical alcohol for 40 minutes, and finally va...

Embodiment 3

[0033]A method for sizing chitosan fiber cross-linked carboxymethyl chitosan, first stirring and dissolving carboxymethyl chitosan in water at a speed of 250rpm, and then vacuum defoaming to prepare cross-linked carboxymethyl chitosan Polycan sizing agent, wherein the mass ratio of carboxymethyl chitosan and water is 4:130, then the chitosan fiber is immersed in the cross-linked carboxymethyl chitosan sizing agent and evenly sized and baked at a temperature of 50°C Finally, immerse the chitosan fibers after sizing at a temperature of 20°C and a concentration of 6wt% calcium nitrate aqueous solution for cross-linking for 7min, and dry at a temperature of 50°C to obtain carboxymethyl chitosan sizing chitosan Fiber, carboxymethyl chitosan sizing The breaking strength of chitosan fiber increased by 71.7% compared with chitosan fiber, and the knot strength increased by 77.5%.

[0034] The carboxymethyl chitosan sized chitosan fiber is spray-coated with a colorant, dried, immersed i...

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PUM

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Abstract

The invention relates to a sizing method for chitosan fiber crosslinking carboxymethyl chitosan. Firstly, a crosslinked carboxymethyl chitosan sizing agent is obtained by a vacuum defoamation treatment after the carboxymethyl chitosan is dissolved in water; and then the chitosan fiber is immersed in the crosslinked carboxymethyl chitosan sizing agent, and the chitosan fiber is dried after uniformsizing; and finally, the sized chitosan fiber is immersed into a cross-linking agent solution for crosslinking, and a carboxymethyl chitosan sizing chitosan fiber is prepared after drying. Compared with the breaking strength of the chitosan fiber, the breaking strength of the carboxymethyl chitosan sizing chitosan fiber is increased by 71.7-90.2%. The sizing method has the advantages of simple process, convenient operation, and low cost; through adoption of the sizing method, the mechanical strength of the chitosan fiber is improved, and a prepared product is widely applied; and the carboxymethyl chitosan sizing chitosan fiber is dried after a coloring agent is applied to the carboxymethyl chitosan sizing chitosan fiber, and then is immersed in medical alcohol for 30-60 minutes for performing sterilization and disinfection, and finally, vacuum drying packaging is performed to obtain a medical suture line, so that the sizing method has a great application value.

Description

technical field [0001] The invention belongs to the field of fiber treatment and relates to a sizing method for chitosan fiber cross-linked carboxymethyl chitosan. Background technique [0002] Chitosan fiber is a natural material, which has the advantages of non-toxicity, hemostasis, anti-inflammation, etc. It has good compatibility with biological cells, low immune antigenicity, and no rejection reaction with body fluids and cells; it is biodegradable and can be used in The degradation product in the organism is glucosamine; glucosamine is harmless to the human body and will not accumulate in the body. Therefore, chitosan has a very wide application prospect in the field of biomedicine. As tissue scaffolds and drug carriers, chitosan and its derivatives have the functions of promoting wound healing, preventing tissue adhesion, anticoagulation, lowering lipid, lowering cholesterol, antiulcer, antitumor, etc., and can also be blended with other fibers to make clothing fabri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/03
CPCD06M15/03D06M2200/40
Inventor 孙宾胡广敏朱美芳朱新华陈龙陈凯李敬
Owner DONGHUA UNIV