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Preparation method of zno quantum dot/wool keratin composite functional nanofiber

A technology of wool keratin and nanofibers, which is applied in the field of preparation of ZnO quantum dots/wool keratin composite functional nanofibers, can solve problems such as waste, large molecular weight of keratin, and environmental impact, and achieve resource saving, good antistatic and Anti-ultraviolet, environmental protection effect

Inactive Publication Date: 2015-08-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main component of wool fiber is α-keratin. Keratin molecules form a highly cross-linked three-dimensional stable structure through disulfide bonds, hydrogen bonds, salt bonds and other bonds. Dissolution, the traditional method of dissolving wool protein is to break the disulfide bond or peptide bond of the protein molecule into short peptides by strong alkali, strong acid, reducing agent or oxidizing agent and other reagents. These methods generally have a large amount of inorganic acid, alkali, reducing agent or oxidizing agent The waste of environmentally unfriendly solvents has a serious impact on the environment
[0003] However, in the traditional method, a new and better process has been developed through integration to solvent the wool fiber, and complete the dissolution of the wool fiber at a lower temperature and in a shorter time, so as to ensure that the extracted keratin has a larger molecular weight and is more suitable for spinning. Silk performance is better, it is necessary to explore

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Wash the wool with water, then wash it with detergent 209 for 30 minutes, then degrease it in a mixed solvent of ethanol-acetone (mixing ratio 1:1) for 5 hours, and finally crush it into powder (the diameter is generally tens to several 100 microns); detergent LR-2093 g / L, temperature 40°C, bath ratio 50:1. Add the cleaned raw materials into the urea composite liquid (urea 100g / L, SDS5g / L, sodium bisulfite 30g / L), wherein the raw materials are 10% by weight of the liquid, at 90°C, under magnetic stirring The keratin liquid solution of the corresponding concentration can be obtained by dissolving for 4 hours under high temperature; then the wool keratin powder is obtained through centrifugation, salting out, and freeze-drying. Dissolve wool keratin powder into formic acid solution to make the weight ratio 5%. After stirring and dissolving, add PEO (polyethylene oxide, average molecular weight 600,000), PEO:wool keratin=1:9, and finally stir and dissolve to obtain wool...

Embodiment 2

[0032] 1) Wash the wool with water, then wash it with detergent 209 for 30 minutes, then degrease it in a mixed solvent of ethanol-acetone (mixing ratio 1:1) for 5 hours, and finally crush it into powder (the diameter is generally tens to several 100 microns); detergent LR-2093 g / L, temperature 40°C, bath ratio 50:1. Add the washed raw materials into the urea composite liquid (urea 100g / L, SDS5g / L, sodium bisulfite 30g / L), wherein the raw materials are 105% of the liquid weight percentage, at 90 ° C, under magnetic stirring The keratin liquid solution of the corresponding concentration can be obtained by dissolving for 4 hours under high temperature; then the wool keratin powder is obtained through centrifugation, salting out, and freeze-drying. Dissolve wool keratin powder into formic acid solution to make the weight ratio 10%. After stirring and dissolving, add PEO (polyethylene oxide, average molecular weight 600,000), PEO:wool keratin=1:8, and finally stir and dissolve to ...

Embodiment 3

[0036]1) Wash the wool with water, then wash it with detergent 209 for 30 minutes, then degrease it in a mixed solvent of ethanol-acetone (mixing ratio 1:1) for 5 hours, and finally crush it into powder (the diameter is generally tens to several 100 microns); detergent LR-2093 g / L, temperature 40°C, bath ratio 50:1. Add the cleaned raw materials into the urea composite liquid (urea 100g / L, SDS5g / L, sodium bisulfite 30g / L), wherein the raw materials are 10% by weight of the liquid, at 90°C, under magnetic stirring The keratin liquid solution of the corresponding concentration can be obtained by dissolving for 4 hours under high temperature; then the wool keratin powder is obtained through centrifugation, salting out, and freeze-drying. Dissolve wool keratin powder into formic acid solution to make the weight ratio 15%. After stirring and dissolving, add PEO (polyethylene oxide, average molecular weight 600,000), PEO:wool keratin=1:9, and finally stir and dissolve to obtain wool...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a preparation method of ZnO quantum dot / wool keratin composite functional nanofiber. The method includes: (1) cleaning wool fiber, degreasing with an ethanol-acetone solvent mixture, smashing, adding the smashed wool fiber into a urea composite liquid, dissolving to obtain a keratin liquid solution, centrifuging, salting out, freeze-drying to obtain wool keratin powder, dissolving the wool keratin powder into formic acid, stirring to dissolve the powder, adding PEO, and stirring to dissolve the PEO to obtain a formic acid solution of the wool keratin; (2) heating an ethanol solution of zinc acetate, and adding LiOH-H2O to form ZnO quantum dots; and (3) adding the ZnO quantum dots into the formic acid solution of the wool keratin obtained in the step (1), stirring, mixing, and performing electrostatic spinning finally. The preparation method is low in cost and simple in operation. The multifunctional nanofiber obtained has high visible light transmittance, high ultraviolet absorptivity, low specific resistance, and other photoelectric properties.

Description

technical field [0001] The invention belongs to the field of preparation of composite functional nanofibers, in particular to a preparation method of ZnO quantum dot / wool keratin composite functional nanofibers. Background technique [0002] Wool keratin fiber is one of the earliest natural fiber materials used by human beings. Due to the limitation of wool quality and textile technology, a large number of short fibers and thick fibers are discarded every year, making the research on the regeneration and utilization of this kind of fibers and methods continue. for people's attention. The main component of wool fiber is α-keratin. Keratin molecules form a highly cross-linked three-dimensional stable structure through disulfide bonds, hydrogen bonds, salt bonds and other bonds. Dissolution, the traditional method of dissolving wool protein is to break the disulfide bond or peptide bond of the protein molecule into short peptides by strong alkali, strong acid, reducing agent o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F4/00D01F1/10C01G9/02B82Y30/00
Inventor 李戎张恒
Owner DONGHUA UNIV