A kind of preparation method of natural indigo dyed antibacterial textile

A technology of antibacterial textiles and natural indigo, applied in the textile field, can solve the problems of fibers having no affinity and not conforming to ecological environment protection, etc., and achieve the effect of increasing the adhesion amount

Active Publication Date: 2022-03-11
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since indigo is a non-water-soluble vat dye and has no affinity for fibers, it needs to be reduced to its leuco-salt sodium salt before dyeing fibers; traditional dyeing often uses sodium hydrochloride as a reducing agent, which does not meet the requirements of ecological and environmental protection

Method used

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  • A kind of preparation method of natural indigo dyed antibacterial textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of the mass fraction of 1% aqueous solution of natural indigo dyes, natural indigo was added accounting 20% by mass of polyvinylpyrrolidone, after complete dissolution, a mechanical stirrer / min. Stirring speed 400r 25min, to obtain pre-dispersion; and 15mm diameter probe tip inserted into a pre-alloy ultrasonic dispersion, ultrasonic dispersion 20min at 100W power, natural indigo dye to prepare a suspension solution;

[0022] (2) mixing desizing, scouring, bleaching of cotton fabrics are immersed in natural indigo dye suspension solution, after 30 seconds calender roll, two rolls two dipping, rolling over 80%, 60 deg.] C after drying 10min, padding concentration of 8g / L of an aqueous solution of copper acetate, two two dip rolling, rolling rate of more than 80%, 60 ℃ vacuum dried for later use;

[0023] (3) In the autoclave having a Teflon and the preparation concentration 5g / L glucose and the concentration of 2g / L of a sodium hydroxide solution; in ...

Embodiment 2

[0041] (1) The preparation mass fraction is 5% natural indigo-dyed water solution, and then adding polyvinylpyrrolidone comprising the natural indigo dye. After it is completely dissolved, the mechanical mixer is stirred at 600 r / min at a rate of 15 min to obtain a pre-dispersion liquid; Tip diameter 15mm titanium alloy ultrasonic probe inserted into a pre-dispersion solution, ultrasonic dispersion of 10 min at 200W power, and produced a natural indigo dye suspension solution;

[0042] (2) Immerse it, boiled, bleached, is immersed in a natural indigo dye suspension solution, and the roll roll is rolled after 30 seconds, the two immersion two rolling, the yield is 100%, 80 ° C for 5 minutes, soak The rolling mass concentration is 16 g / L, a copper sulfate solution, two immersion two rolling, and the grease rate of 100%, 80 ° C, vacuum drying, and spare;

[0043] (3) In the high pressure reactor having a polytetrafluoroethylene, a mixture of sodium hydroxide and a mass concentrat...

Embodiment 3

[0045] (1) The preparation mass fraction is 2.5% natural indigo-dyed water solution, and then the polyvinylpyrrolidone comprising natural indigo dye is added. After it is completely dissolved, the mechanical mixer is stirred at 500 r / min at a rate of 20 min to obtain a pre-dispersion liquid; Tip diameter 15mm titanium alloy ultrasonic probe inserted into the pre-dispersion, ultrasonic dispersion at 150 W power, and produced a natural indigo dye suspension solution;

[0046] (2) Immerse it, boiled, bleached viscose fabric into the natural indigo dye suspension solution, after 30 seconds, roll rolling, two immersion two rolling, 90%, 70 ° C for 8 minutes, The copper solution of the immersion quality is 12 g / L, two immersion two rolling, 90% yield rate, 70 ° C, vacuum drying, spare;

[0047] (3) In the high pressure reactor having a polytetrafluoroethylene, a mixture of sodium hydroxide having a mass concentration of 8 g / L is prepared; the fabric treated by step (2) is put into...

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Abstract

The invention provides a method for preparing indigo-dyed antibacterial textiles. In the method, the natural indigo is ultra-fine by means of ultrasonic crushing, and then the textile is pad-rolled with an ultra-fine natural indigo dye suspension solution, and the copper salt solution is rolled, and then A one-step hydrothermal method is used to realize the dyeing of indigo dye and the in-situ generation of cuprous oxide on the fabric. The polyvinylpyrrolidone in the suspension solution is not only a dispersant for natural indigo dye, but also can be mixed with Cu when padding the copper salt solution. 2+ Form complexation; in the process of hydrothermal reaction, glucose is not only the reducing agent of natural indigo, but also the Cu 2+ converted to Cu + the reducing agent. The fabric obtained by the method not only has deep color and good color fastness, but also has high antibacterial activity and good washability.

Description

Technical field [0001] The present invention belongs to the technical field of textile, in particular, it relates to a process for the preparation of indigo dyed antimicrobial textiles. Background technique [0002] Indigo is a natural extract made from indigo, woad, indigo, blue horse leaves of plants such as indole-containing acid component, three thousand years of history of use in my country. Natural indigo have some medicinal value, it can be used for mumps, myeloma, leukemia treatment. Using natural indigo dyed textiles not only soft color, but also has a unique role in human health, in recent years, attention has been widely favored. [0003] Since the water-insoluble vat dye indigo belongs, no affinity for the fiber, which need to be reduced to the leuco salt thereof, to dye fibers staining; traditional dyeing is often used as a reducing agent sodium hydrosulfite, do not meet the environmental protection requirement. Further, the affinity of the indigo-dyed cotton fibers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/34D06P1/22D06P1/52D06P3/60D06P5/04D06P5/10
CPCD06P1/34D06P1/228D06P1/5242D06P3/6025D06P5/04D06P5/10
Inventor 彭勇刚汪媛黎珊陶永新纪俊玲
Owner CHANGZHOU UNIV
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