A kind of preparation method of cellulose/biological glass composite fiber

A bio-glass, composite fiber technology, applied in the direction of cellulose/protein conjugated rayon, fiber chemical characteristics, conjugated rayon, etc., can solve the problem of affecting the normal recovery of solvents and coagulants, affecting the physical and chemical properties of fibers, increasing Cost recovery and other issues, to achieve the effect of promoting wound healing, inhibiting bacterial growth, and strong operability

Active Publication Date: 2018-04-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixing suspensions, emulsions and cellulose spinning solutions can improve the dispersion uniformity of functional additives, but additives such as surfactants will enter the coagulation bath, affecting the normal recovery of solvents and coagulants, increasing the cost of recovery
The additives remaining in the fiber will also affect the physical and chemical properties of the fiber, and there is also the possibility of additive leakage during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of cellulose / biological glass composite fiber, comprising the steps of:

[0032] Using cellulose solvent N-methylmorpholine-N-oxide (NMMO) / water (wherein the proportion of water is 13.8wt%) to dissolve the cellulose with a low polymerization degree of 200 to obtain a low polymerization degree fiber The carrier solution of the biological glass powder with a concentration of 6wt%; then the average particle size is less than 1 μm, and the biological glass powder is composed of SiO 2 、Na 2 O, CaO and P 2 o 5 Silicate glass powder (containing 45wt% SiO 2 , 24.5wt%Na 2 O, 24wt% CaO and 6.0wt% P 2 o 5), which is mixed with the carrier solution using a screw extruder, wherein the stirring speed is 100 rpm, the stirring time is 0.5 hours, and the mass ratio of low polymerization degree cellulose and biological glass powder is 1:1. Obtain a functional mother liquor; finally inject the functional mother liquor into the cellulose spinning solution in the...

Embodiment 2

[0035] A preparation method of cellulose / biological glass composite fiber, comprising the steps of:

[0036] Using cellulose solvent N-methylmorpholine-N-oxide (NMMO) / water (wherein the proportion of water is 13.4wt%) to dissolve the cellulose with a low polymerization degree of 500 to obtain a low polymerization degree fiber The carrier solution of the biological glass powder with a concentration of 15wt%; then the average particle size is less than 1 μm, and the biological glass powder is composed of SiO 2 、Na 2 O, CaO and P 2 o 5 Silicate glass powder (containing 45wt% SiO 2 , 24wt%Na 2 O, 24.5wt% CaO and 6.0wt% P 2 o 5 ), which is stirred and mixed with the carrier solution using a kneader, wherein the stirring speed is 300 rpm, the stirring time is 1 hour, and the mass ratio of low-polymerization cellulose and biological glass powder is 9:1, and the obtained functional functional mother liquor; finally, the functional mother liquor is injected into the cellulose sp...

Embodiment 3

[0039] A preparation method of cellulose / biological glass composite fiber, comprising the steps of:

[0040] Adopting cellulose solvent 1-butyl-3-methylimidazolium chloride salt to dissolve the cellulose with a low degree of polymerization of 300 to obtain a carrier solution of a biological glass powder with a concentration of cellulose with a low degree of polymerization of 7 wt %; and then The average particle size is less than 1μm, and the biological glass powder includes SiO 2 、Na 2 O, CaO and P 2 o 5 Silicate glass powder (containing 44wt% SiO 2 , 24.5wt%Na 2 O, 24.5wt% CaO and 6.0wt% P 2 o 5 ), which is mixed with the carrier solution using a screw extruder, wherein the stirring speed is 200 rpm, the stirring time is 0.6 hours, and the mass ratio of low-polymerization cellulose and biological glass powder is 10:1. Obtain a functional mother liquor; finally, inject the functional mother liquor into the cellulose spinning solution in the way of online addition and i...

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Abstract

The invention relates to a preparation method of cellulose / bioglass composite fiber. The cellulose / bioglass composite fiber is prepared by dissolving cellulose with low polymerization degree by cellulose solvent, and preparing a carrier solution of bioglass powder body; through strong shearing function provided by the mixing device, mixing the bioglass powder with the carrier solution, and preparing the functional mother liquor; filling the functional mother liquor to the cellulose spinning solution; extruding, condensing and drafting the spinning solution, and obtaining the cellulose / bioglass composite fiber. Specific to the problem that the bioglass powder is hard to evenly mix with high-viscosity spinning solution, the cellulose / bioglass composite fiber is prepared by filling the bioglass powder mother liquor to the spinning solution and further spinning and shaping. The mother liquor carrier of the invention is condensed and shaped along with fiber, and enters the solvent and condensing bath system without additional assistant. The preparation method is simple, flexible and high-efficient; the production of the cellulose / bioglass composite fiber can be realized on the basis of a regular production line.

Description

technical field [0001] The invention relates to the field of composite fibers, in particular to a preparation method of cellulose / biological glass composite fibers. Background technique [0002] There are various types and styles of wound dressings, and both regenerated cellulose fiber and bioglass powder can be used as wound dressings. Regenerated cellulose fiber is a cellulose fiber prepared by regeneration from natural cellulose. According to the difference of production process, commercialized regenerated cellulose fibers mainly include viscose fiber, lyocell fiber and cupro ammonia fiber. Bioglass is made of SiO 2 、Na 2 O, CaO and P 2 o 5 Silicate glass composed of basic components. Bioglass can promote wound repair, but bioglass dressing exists in powder state, which is troublesome to use. In order to avoid falling off, it needs to be covered with cellulose dressing for protection. The preparation of cellulose / biological glass composite fiber can combine the ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/02D01F8/18A61L15/18A61L15/28
CPCA61L15/18A61L15/28D01F8/02D01F8/18C08L1/02
Inventor 曹长林王华平张玉梅朱方亮王建宁元伟
Owner DONGHUA UNIV
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