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Method for extracting natural dye of gordon euryale seed shell and application in pure cotton dyeing

A technology of natural dyes and extraction methods, which is applied in the field of extraction of natural dyes from Gorgon husks and dyeing of pure cotton, to achieve the effects of simple extraction process, low cost and broad market prospects

Active Publication Date: 2010-07-14
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the extraction of the chemical components of Gorgon husk, and using it as a natural dye in the dyeing of modified cotton fabrics

Method used

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  • Method for extracting natural dye of gordon euryale seed shell and application in pure cotton dyeing
  • Method for extracting natural dye of gordon euryale seed shell and application in pure cotton dyeing
  • Method for extracting natural dye of gordon euryale seed shell and application in pure cotton dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 100 grams of air-dried gorgon shells, crush them mechanically to 30 mesh, add 60% ethanol, and extract at 40°C with an ultrasonic power of 500W for 40 minutes, filter to obtain the filter residue and the filtrate containing natural dye; filter the filter residue with 90% After leaching with ethanol at 60°C for 60 minutes, filter, combine the filtrate obtained twice, and distill and solidify under reduced pressure to obtain the natural dye of thick Gorgon shell; For the resin column, the flow rate is controlled at 1 ml / min. After the Gorgon husk natural dye solution flows out, the resin column is washed with deionized water to remove the residue, and then eluted with ethanol with a pH value of 4 and 60%. The obtained eluent is concentrated, solidified and pulverized by vacuum distillation, and the ethanol is recovered to obtain the refined powder natural dye of Gorgon husk.

[0019] Prepare the pretreatment agent solution: 2 g / L cationic modifier, 4 g / L sodium hydr...

Embodiment 2

[0024] Weigh 100 grams of air-dried gorgon shells, crush them mechanically to 50 mesh, add 75% ethanol, and extract at 50°C with an ultrasonic power of 600W for 60 minutes, filter to obtain the filter residue and filtrate containing natural dye; filter the residue with 80% After leaching with ethanol for 50 minutes at 70°C, filter, combine the filtrates obtained twice, and distill and solidify under reduced pressure to obtain natural dyes from thick gorgon shells; after dissolving the natural dyes in thick gorgon shells with deionized water, add cationic macropores For the resin column, the flow rate is controlled at 1.5 ml / min. After the Gorgon husk natural dye solution flows out, the resin column is washed with deionized water to remove the residue, and then eluted with ethanol with a pH value of 5 and 50%. The obtained eluent is concentrated, solidified and pulverized by vacuum distillation, and the ethanol is recovered to obtain the refined powder natural dye of Gorgon husk...

Embodiment 3

[0030] Weigh 100 grams of air-dried gorgon shells, crush them mechanically to 60 mesh, add 80% ethanol, and extract at 50°C with an ultrasonic power of 1000W for 70 minutes, filter to obtain the filter residue and filtrate containing natural dyes; filter the filter residue with 75% After leaching with ethanol for 50 minutes at 80°C, filter, combine the filtrate obtained twice, and distill and solidify under reduced pressure to obtain the natural dye of thick Gorgon shell; For the resin column, control the flow rate at 2 ml / min. After the Gorgon husk natural dye solution flows out, rinse the resin column with deionized water to remove the residue, and then elute with 90% ethanol with a pH value of 5. The obtained eluent is concentrated, solidified and pulverized by vacuum distillation, and the ethanol is recovered to obtain the refined powder natural dye of Gorgon husk.

[0031] Prepare the pretreatment agent solution: 5 g / L cationic modifier, 5 g / L sodium hydroxide, the bath r...

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Abstract

The invention discloses a method for extracting a natural dye of gordon euryale seed shell, which is performed by the following steps: (1) pretreating raw materials; (2) performing ultrasound assisted extraction on the crushed gordon euryale seed shell; (3) performing secondary extraction on filter residue; and (4) refining natural dye of coarse gordon euryale seed shell, dissolving the natural dye of coarse gordon euryale seed shell by using deionized water, and passing through a cation macroporous absorption resin column to obtain refined brown powdery natural dye extract of the gordon euryale seed shell, wherein the dyed fabric is light brown. The application of the natural dye of gordon euryale seed shell in the pure cotton dyeing comprises the following two processes: pretreating cotton fabrics and dyeing the pure cotton, namely, (1) treating the pure cotton fabrics in a prepared pretreatment agent; and (2) dyeing by adopting the natural dye of gordon euryale seed shell, and taking out the fabrics for cleaning and drying. The method for extracting the natural dye of gordon euryale seed shell can effectively extract the natural dye by using wastes, is favorable for environmental protection, and saves energy. The clothes made by the dyed fabrics are safe and biodegradable.

Description

technical field [0001] The invention relates to natural dyes and applications thereof, in particular to a method for extracting natural dyes from gorgon husks and dyeing pure cotton. technical background [0002] In human history, natural dyes have made indelible contributions to the beautification of people's lives. Since the end of the 19th century, due to the rapid development of synthetic dyes, natural dyes have basically withdrawn from the field of fabric dyeing. With the increasing awareness of human environmental protection and the increasing concern for their own health, the harm of some synthetic dyes to human health and the ecological environment has become more and more noticeable. Under the wave of the global green revolution, natural dyes have begun to be valued by people again. Animal and vegetable dyes in natural dyes are extracted from organisms, have good compatibility with the environment, and are biodegradable. Most of the natural dyes are traditional C...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P3/60D06M15/53D06M15/263D06M101/06
Inventor 纪俊玲李海乐李小琴汪媛何叶丽席海涛杨扬
Owner CHANGZHOU UNIV
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