Enzyme quantitative detection method of textile fiber content

Abstract

The invention relates to an enzyme quantitative detection method of textile fiber content. The enzyme quantitative detection method of the textile fiber content has the characteristics of high accuracy, environmental friendliness and harmlessness. According to the technical scheme, the enzyme quantitative detection method of the textile fiber content sequentially comprises the following steps: (1) carrying out qualitative identification on fiber components of textiles; (2) dyeing the textiles by adopting a direct dye, a reactive dye, an insolubility azo pigment or a cationic dye which has great influence on the enzymatic activity, and pretreating by using an oxidation-reduction enzyme so as to remove the dye; (3) respectively selecting corresponding cellulase or / protease or / A enzyme for carrying out selective separate degradation treatment on the plurality of textiles treated in the step (2) one by one according to the qualitative identification result in the step (1), or selecting corresponding cellulase or / protease or / A enzyme for sequentially carrying out selective degradation treatment on the textiles treated in the step (2) according to the qualitative identification result in the step (1), wherein the A enzyme is lipase or cutinase.

Description

technical field [0001] The invention belongs to the field of quantitative analysis of textile fiber content, and in particular relates to a method for selective quantitative detection of textile fiber content by using enzymes. Background technique [0002] The composition and content of raw materials used in textiles are not only related to the health of consumers, but also play an important guiding role in the washing and maintenance of products themselves, and are an important basis for consumers to choose products. Therefore, the fiber name and content marked on the fabric label has always been one of the main concerns of consumers, and it is also an important tool for relevant departments to ensure and supervise the quality of textiles. [0003] The national textile industry standard stipulates that the fiber content should be expressed as the percentage of the fiber in the total fiber content of the product. At present, the quantitative detection methods of fiber conten...

AI Technical Summary

Problems solved by technology

In the physical method, the inspector manually disassembles and weighs the textile or uses a microscope or scanning electron microscope to observe the cross-sectional / longitudinal morphology of the fiber for statistical counting; however, the physical method is a subjective rather than objective test method, and inspectors, especially experienced Insufficient testing personnel have different subjective judgments on fibers, resulting in large differences in test results; at the same time, due to the influence of processing technology, there may be a large difference between the test sample and the standard sample

After the qualitative identification of fiber components by chemical method, different organic reagents / chemical substances (such as hydrochloric acid) and dissolution schemes are used to dissolve different textile fiber components, and the fiber content is determined by the change of textile quality before and after dissolution; but the test process of this method will Toxic and harmful substances are discharged, and fabric components with similar solubility cannot be distinguished. The solvent dissolution process and scheme are more complicated. The standards of various countries have different regulations on the mass change correction coefficient (d value) when calculating the content, resulting in deviations in the results.

At the same time, some fibers have poor solubility. For some fibers dyed with reactive dyes, chemical reagents cannot completely dissolve them, resulting in data errors