Plant essential oil-containing lyocell fiber and preparation method thereof

A plant essential oil and fiber technology, which is applied in the direction of plant fiber, liquid-repelling fiber, fiber treatment, etc., can solve the problems of easy oxidation, strict requirements on the physical and chemical properties of additives, and poor chemical stability, so as to achieve slow release, adding The ingredients are simple and the moisture regain effect is good

Active Publication Date: 2021-10-19
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, NMMO, a lyocell fiber solvent, has poor chemical stability and is easy to oxidize. 2+ 、Cu 2+ The reaction of metal ions, etc., has strict requirements on the physical and chemical properties of additives. It will be of great practical significance to prepare a lyocell fiber containing plant essential oils.

Method used

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  • Plant essential oil-containing lyocell fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation method of lyocell fiber containing plant essential oil, the specific steps are as follows:

[0049] (1) Plant essential oil (a mixture of lavender oil and sweet almond oil with a mass ratio of 1:1) and nano-inorganic powder (German Wacker, hydrophobic fumed silica, model H15) are evenly mixed to make plant essential oil / Nano-inorganic powder mixture;

[0050] In the plant essential oil / nano-inorganic powder mixture, the mass fraction of the nano-inorganic powder is 10%;

[0051] (2) Using a screw extruder to mix the plant essential oil / nano-inorganic powder mixture with the functional mother liquid base liquid to make a plant essential oil functional mother liquid with a viscosity of 14000Pa·s;

[0052] Among them, the functional mother liquid base liquid is composed of cellulose, cellulose acetate, NMMO and water; the degree of polymerization of cellulose is 900, and the mass fraction of cellulose is 6%; the degree of esterification of cellulose acetate...

Embodiment 2

[0076] A preparation method of lyocell fiber containing plant essential oil, the specific steps are as follows:

[0077] (1) Plant essential oil (a mixture of rosemary oil and jojoba oil with a mass ratio of 1:1) and nano-inorganic powder (Wacker, Germany, hydrophobic fumed silica, model H20) are uniformly mixed Plant essential oil / nano-inorganic powder mixture;

[0078] In the plant essential oil / nano-inorganic powder mixture, the mass fraction of the nano-inorganic powder is 14%;

[0079] (2) Using a screw extruder to mix the plant essential oil / nano-inorganic powder mixture with the functional mother liquid base liquid to make a plant essential oil functional mother liquid with a viscosity of 13500Pa·s;

[0080] Among them, the functional mother liquid base liquid is composed of cellulose, cellulose acetate, NMMO and water; the degree of polymerization of cellulose is 850, and the mass fraction of cellulose is 7%; the degree of esterification of cellulose acetate is 1.5, a...

Embodiment 3

[0093] A preparation method of lyocell fiber containing plant essential oil, the specific steps are as follows:

[0094] (1) Plant essential oil (a mixture of lemon oil and grape seed oil with a mass ratio of 1:1) and nano-inorganic powder (Evonik, silica AEROSIL R 812S) are evenly mixed to make plant essential oil / nano-inorganic powder mixture;

[0095] In the plant essential oil / nano-inorganic powder mixture, the mass fraction of the nano-inorganic powder is 18%;

[0096] (2) Using a screw extruder to mix the plant essential oil / nano-inorganic powder mixture with the functional mother liquid base liquid to make a plant essential oil functional mother liquid with a viscosity of 13000Pa·s;

[0097] Among them, the functional mother liquid base liquid is composed of cellulose, cellulose acetate, NMMO and water; the degree of polymerization of cellulose is 800, and the mass fraction of cellulose is 8%; the degree of esterification of cellulose acetate is 1.5, and the The mass ...

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Abstract

The invention relates to a plant essential oil-containing lyocell fiber and a preparation method thereof. The preparation method comprises the following steps that firstly, plant essential oil and nano inorganic powder (subjected to hydrophobic modification treatment) are uniformly mixed to prepare a plant essential oil/nano inorganic powder mixture; then the plant essential oil/nano inorganic powder mixture is mixed with a functional mother liquor base solution (containing cellulose and cellulose acetate) by adopting a screw extruder to prepare a plant essential oil functional mother liquor; finally, the plant essential oil functional mother liquor is mixed with a lyocell spinning solution (the viscosity difference of the plant essential oil functional mother liquor and the lyocell spinning solution is not more than 1000Pa. S), and spinning is carried out to prepare the plant essential oil-containing lyocell fiber; the finally prepared fiber mainly consists of a lyocell fiber body, nano inorganic powder and plant essential oil; and the plant essential oil is attached to the nano inorganic powder, the nano inorganic powder is dispersed in the lyocell fiber body, and the lyocell fiber body is composed of cellulose and cellulose acetate. The loss amount of the plant essential oil in the forming process is small, and release of the plant essential oil can be effectively slowed down.

Description

technical field [0001] The invention belongs to the technical field of regenerated cellulose fibers, and relates to a lyocell fiber containing plant essential oil and a preparation method thereof. Background technique [0002] Lyocell fiber is a regenerated cellulose fiber prepared by dry spray wet spinning with N-methylmorpholine-oxide (NMMO) aqueous solution as solvent. Lyocell fiber has high strength, good moisture absorption performance, elegant luster, and environmentally friendly production process. It is a regenerated cellulose fiber variety with great competitive advantages and development prospects. With the advancement of technology, functionally modified lyocell fibers are gradually appearing. The modified lyocell fibers of Austrian Lenzing Company include anti-fiber type (Lenzing lyocell A100, Lenzing lyocell LF), anti-sun and anti-ultraviolet type (Lenzing lyocell sun / dull), etc. Germany's Thuringian Institute of Textile and Plastics (TITK) The brand has dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01F1/10D06M15/643D06M13/325D06M13/368D06M13/188D06M11/00D06M101/06
CPCD01F2/00D01F1/10D06M15/643D06M13/325D06M13/368D06M13/188D06M11/00D06M2101/06D06M2200/12
Inventor 姚勇波颜志勇许志李喆生俊露易洪雷李海东
Owner JIAXING UNIV
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