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Cellulose/calcium alginate blend fibers with skin-core structure and preparation method of cellulose/calcium alginate blend fibers

A technology of calcium alginate and skin-core structure, applied in cellulose/protein conjugated artificial filament, fiber treatment, filament/thread forming, etc. Problems such as cellulose burning, to achieve the effect of good flame retardant effect and good flame retardant effect

Active Publication Date: 2020-12-25
JIAXING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calcium alginate fiber has the problems of low mechanical properties, poor chemical resistance and stability, and is not suitable for taking
The cellulose / calcium alginate fiber made by the above two methods has low calcium alginate content, which cannot prevent the burning of cellulose, and the fiber does not have flame retardant properties

Method used

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  • Cellulose/calcium alginate blend fibers with skin-core structure and preparation method of cellulose/calcium alginate blend fibers

Examples

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Effect test

Embodiment 1

[0056] A preparation method of a cellulose / alginic acid blended fiber, wherein the cellulose solution I is used as a skin layer component, and the cellulose / alginic acid blended solution is used as a core layer component, and after the skin-core composite spinning method is used for spinning, Enter the air section, the first coagulation bath (the ionic liquid aqueous solution with a mass concentration of 5%) and the second coagulation bath (the calcium chloride aqueous solution with a mass fraction of 1%), and then wash and dry to obtain cellulose / alginic acid blended fibers;

[0057] Wherein, the cellulose solution I is made by the cellulose that the degree of polymerization is 400 dissolved in the ionic liquid, and the cellulose / alginic acid blend solution is that the cellulose solution is mixed with the alginic acid solution to make, and the cellulose solution is made of the cellulose solution with a degree of polymerization of 300. Cellulose is dissolved in ionic liquid an...

Embodiment 2

[0065] A kind of preparation method of cellulose / alginic acid blended fiber, take cellulose solution I as skin layer component, cellulose / alginic acid blended solution as core layer component, after adopting sheath-core composite spinning method to carry out spinning, Enter the air section, the first coagulation bath (water) and the second coagulation bath (calcium chloride aqueous solution with a mass fraction of 1%) in sequence, and then wash and dry to obtain cellulose / alginic acid blended fibers;

[0066] Among them, the cellulose solution I is prepared by dissolving cellulose with a degree of polymerization of 500 in an ionic liquid, the cellulose / alginic acid blend solution is prepared by mixing a cellulose solution and an alginic acid solution, and the cellulose solution is prepared by Cellulose is dissolved in ionic liquid and made, and alginic acid solution is made by dissolving alginic acid in ionic liquid, and the viscosity ratio of cellulose solution and alginic aci...

Embodiment 3

[0069] A kind of preparation method of cellulose / alginic acid blended fiber, take cellulose solution I as skin layer component, cellulose / alginic acid blended solution as core layer component, after adopting sheath-core composite spinning method to carry out spinning, Enter the air section, the first coagulation bath (an ionic liquid aqueous solution with a mass concentration of 6%) and the second coagulation bath (a calcium chloride aqueous solution with a mass fraction of 2%) in sequence, and then wash and dry to obtain cellulose / alginic acid blended fibers;

[0070] Among them, the cellulose solution I is prepared by dissolving cellulose with a degree of polymerization of 600 in an ionic liquid, the cellulose / alginic acid blend solution is prepared by mixing a cellulose solution and an alginic acid solution, and the cellulose solution is prepared by Cellulose is dissolved in ionic liquid and made, and alginic acid solution is made by dissolving alginic acid in ionic liquid,...

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Abstract

The invention provides cellulose / calcium alginate blend fibers with a skin-core structure and a preparation method of the cellulose / calcium alginate blend fibers. The preparation method comprises thesteps of feeding a cellulose solution I and a cellulose / alginic acid blend solution to a skin-core composite spinning assembly, performing extruding through spinneret orifices, enabling extruded products to sequentially enter an air section, a first coagulating bath and a second coagulating bath, and then performing wash and drying to obtain the cellulose / calcium alginate blend fibers with the skin-core structure, wherein the viscosity ratio of the cellulose solution I flowing through a skin layer channel to the cellulose / alginic acid blended solution flowing through a core layer channel is 1:(0.9-1.1). The prepared cellulose / calcium alginate blend fibers with the skin-core structure comprise a cellulose component and a calcium alginate component dispersed in the cellulose component, thecontent of calcium alginate is gradually increased from a core layer to a skin layer, and the mass loss rate of alginic acid in the forming process is 3-10%. The limit oxygen index of the cellulose / calcium alginate blend fibers with the skin-core structure is 27-30%, and the self-extinguishing time after leaving fire is 3-5 seconds.

Description

technical field [0001] The invention belongs to the technical field of biomass regenerated fibers, and relates to a skin-core structured cellulose / calcium alginate blended fiber and a preparation method thereof. Background technique [0002] Regenerated cellulose fiber is a chemical fiber prepared from cellulose by wet spinning. Regenerated cellulose fiber has many advantages such as sustainable resources, good wearing comfort, and degradability, and is an indispensable fiber material. However, regenerated cellulose fibers have the disadvantage of being flammable. In order to improve the comprehensive properties of regenerated cellulose fibers, flame-retardant regenerated cellulose fibers can be made by methods such as after-treatment and solution addition. The preparation of flame-retardant regenerated cellulose fiber by post-finishing method has the problem of insufficient washing fastness. The flame-retardant regenerated cellulose fiber prepared by the solution additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/12D01F1/07D01D5/34
CPCD01F8/02D01F8/12D01F1/07D01D5/34
Inventor 姚勇波庄君新周杰孙燕燕陈子晗易洪雷许志
Owner JIAXING UNIV
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