Method of discriminating natural color cotton

A technology for natural colored cotton and colored cotton is applied in the identification field of natural colored cotton, and can solve the problems of complicated operation, inability to identify natural colored cotton, and high cost.

Inactive Publication Date: 2007-10-03
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Determining the degree of crystallinity by X-ray diffraction method can indirectly identify natural colored cotton and dyed cotton, but the operation is more complicated and the cost is higher
[0005] Although chemical methods can also be used to identify colored cotton, for example, Chinese patent 03141472.9 discloses a preparation method for identifying natural green cotton identification liquid, but this identification liquid can only identify natural green cotton, but cannot identify natural colored cotton of other colors.

Method used

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  • Method of discriminating natural color cotton
  • Method of discriminating natural color cotton
  • Method of discriminating natural color cotton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First prepare cuproammonia solution:

[0022] Weigh 40g of copper sulfate, add 375mL of distilled water into a 500mL beaker, heat and stir to completely dissolve the copper sulfate. Slowly add concentrated ammonia water under magnetic stirring until the solution becomes weakly alkaline to litmus paper. At this point, add about 19 mL of 25-28% concentrated ammonia water. The product blue-green basic copper sulfate precipitated at the bottom of the beaker.

[0023] Discard the supernatant, wash the precipitate with 250 mL of distilled water at about 60°C for 4 times (to remove ammonium sulfate), and then wash with cold distilled water for 3 times. Each wash should be allowed to stand until the precipitate is complete. Finally, wash on the suction filter until the filtrate is free of SO 4 -2 (tested with 10% barium chloride). Slurry the precipitate with a small amount of distilled water and pour it into a 500mL brown bottle.

[0024] Divide 350mL of ammonia water int...

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Abstract

The method of discriminating natural color cotton includes the following steps: 1. swelling color cotton sample in cuprammonia comprising copper 13+ / -0.5 g / L, ammonia 150+ / -3 g / L and glucose 1-3 g / L for 30-60 sec; and 2. observing the pigment distribution in a microscope and discriminating the color cotton being either natural color cotton with spiral pigment distribution mainly in fiber cell cavity or dyed color cotton with homogeneous pigment distribution in different fiber parts. The method is simple, accurate, low in cost and practical.

Description

technical field [0001] The invention relates to a method for identifying natural colored cotton. Background technique [0002] Natural colored cotton belongs to the fine-staple cotton series and is a cotton fiber variety containing natural pigments. Because the textiles made of natural colored cotton do not need bleaching, dyeing and other processes during processing, it can ensure that the textiles do not contain dyes and chemicals that are harmful to the human body or are allergic; greatly reduce the discharge of sewage in the processing of textile products, and are environmentally friendly At the same time, the consumption of energy is reduced, the cost of printing and dyeing processing is reduced, and the added value of the product is increased. It is called a newly rising environmental protection and green textile. [0003] Since the 1990s, under the background that European countries represented by Germany successively enacted environmental protection regulations on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06H3/00
Inventor 陈英陈森
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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