A kind of preparation method and application of amino acid chelated zinc modified lamina tencel fiber

A technology of amino acid and chelated zinc, which is applied in artificial filaments made of cellulose derivatives, skin care preparations, pharmaceutical formulations, etc., can solve the problems of less research on anti-oxidation, and achieve improved anti-oxidation, scavenging Good effect and simple production process

Active Publication Date: 2022-07-22
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, common modifications to cellulose materials include flame retardant, antibacterial, anti-ultraviolet, waterproof and moisture-permeable, etc., and there are few studies on anti-oxidation.

Method used

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  • A kind of preparation method and application of amino acid chelated zinc modified lamina tencel fiber
  • A kind of preparation method and application of amino acid chelated zinc modified lamina tencel fiber
  • A kind of preparation method and application of amino acid chelated zinc modified lamina tencel fiber

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preparation example Construction

[0021] like figure 1 As shown, in the present invention, the preparation method of L-aspartic amino acid chelated zinc modified lamina tencel fiber comprises the following steps:

[0022] (1) Add 0.538g L-aspartate amino acid and 20mL distilled water to the round-bottomed flask, heat the oil bath to 40-55°C with magnetic stirring, slowly add the corresponding proportion of zinc nitrate aqueous solution, record the reaction start time, use 6mol / L NaOH solution to adjust the pH of the reaction solution to 4-7, the temperature was raised to 50-65 ℃ and the reaction was incubated for 1 h. After the reaction was completed, anhydrous ethanol was added to precipitate the chelate, centrifuged, and dried to obtain L-aspartic amino acid. Chelated zinc.

[0023] (2) The NMMO aqueous solution with a mass fraction of 45%-55% was distilled under reduced pressure to a suitable concentration of NMMO aqueous solution, and the amino acid chelated zinc and cellulose pulp were dissolved in the ...

Embodiment 1

[0031] The preparation of L-aspartic amino acid chelated zinc modified Laem Tencel fiber, the steps are as follows:

[0032] (1) Add 0.538g L-aspartate amino acid and 20mL distilled water to the round-bottomed flask, heat the oil bath to 40°C with magnetic stirring, slowly add the corresponding proportion of zinc nitrate aqueous solution, record the reaction start time, use 6mol / L The pH of the reaction solution was adjusted to 6 with the NaOH solution, the temperature was raised to 60°C and the reaction was incubated for 1 h. After the reaction was completed, anhydrous ethanol was added to precipitate the chelate, centrifuged, and dried to obtain L-aspartic amino acid chelated zinc.

[0033] (2) The NMMO aqueous solution with a mass fraction of 45%-55% was distilled under reduced pressure to a suitable concentration of NMMO aqueous solution, and 10 g of the amino acid chelated zinc obtained in step (1) and 500 g of cellulose pulp were dissolved in the NMMO aqueous solution, ce...

Embodiment 2

[0036] The L-aspartic amino acid chelated zinc modified L-hemp tencel fiber is prepared according to the method of Example 1, the difference is: in step (1), the zinc-containing metal compound Zn(OH) is selected 2 Mix the ingredients with L-aspartic amino acid in a molar ratio of 2:3.

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PUM

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Abstract

The invention discloses a preparation method and application of an amino acid chelated zinc modified Laem Tencel fiber, which is obtained through the esterification reaction of amino acid chelated zinc and Laem Tencel fiber, including ligand amino acid and zinc nitrate at a reaction temperature of 50 ℃ The chelation reaction was carried out under the conditions of ‑65℃ and pH value of 4‑7, the reaction product was precipitated by adding absolute ethanol, centrifuged and dried to obtain amino acid chelated zinc, which was dissolved in a fibrinolytic aqueous solution with cellulose pulp, Under the conditions of -130℃ and vacuum stirring, the esterification reaction was carried out for 3-4 hours to obtain the spinning solution, which was filtered and deaerated, and then wet-spun, solidified and formed in the spinning bath to obtain amino acid chelated zinc-modified ramie Tencel fiber. In the invention, the amino acid chelated zinc-modified lamina tencel fiber can improve the antioxidant property, has a good free radical scavenging effect, and can be used in the field of mask base cloth.

Description

technical field [0001] The invention belongs to the technical field of fibers for facial mask base cloth, and particularly relates to a preparation method and application of amino acid chelated zinc modified ramie tencel fibers. Background technique [0002] Cellulose fiber is a commonly used fiber for mask base cloth in the market. The non-woven fabric made of viscose fiber has performance problems. Seaweed fiber is a kind of fiber with good hygroscopicity, biocompatibility and degradability. Bio-based fiber, but its own breaking strength is low, and the cohesion force of the fiber is not high. Lay hemp tencel fiber is a new type of regenerated cellulose fiber. The surface of the fiber has many grooves to enhance the air permeability and hygroscopicity of the fiber. It also has the advantages of natural antibacterial and skin beautification, but because cellulose itself has almost no ability to scavenge free radicals, only external essence can be added to achieve a certain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/28C08B3/14A61K8/02A61K8/73A61Q19/08
CPCD01F2/28C08B3/14A61K8/0212A61K8/731A61Q19/08
Inventor 沈冬冬辛斌杰刘毅余淼孔方圆于文杰罗健袁秀文朱润虎范明珠周园园
Owner SHANGHAI UNIV OF ENG SCI
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